What's the Easiest Way to Implement Portable Current Measurement for a 200W Dc Motor?

The "split core current transformer" that you linked will only sense AC current. You will need a hall-effect current transducer. I believe they are available in split-core versions. You could certainly design a data acquisition system with a battery-powered Arduino and a hall-effect current transducer

1. how can i attach dc motor to my windmill?

only way i know how,is to include a pulley wheel with the part of the windmill that spins when the wind blows.then add the dc motor with a pulley wheel and a fan belt to it.and you need to make sure the motor is located where the belt is tight when it's put in place. .it also be a good idea to include a speed control switch for the motor.that way you can control the speed..and the motor wont burn out from running to fast

2. What is the voltage build condition in a DC motor?

There is no specific condition condition for dc motor to induce voltage like in self excited dc generator. Since we supply electric power as input and take back as mechanical output. So our point of interest in dc motor is torque and where as in generator it is induced voltage. But motor generates back emf once its speed starts to pick-upWhat is the voltage build condition in a DC motor?

3. to run a dc motor by another to get electrical output as per attached diagram.?

This appears to be another "Perpetual Motion Machine" attempt. It has not worked in the past. It did not work yesterday or this morning but maybe, just maybe it will work this time when you build it. Go ahead and do it and see if it works this time.

4. How would I solve this Block Model diagram of a DC motor?

How did you arrive at your answer (475)?My approach for solving the problem would be (first step) to find the overall transfer function in the s-domain. This shouldnt be a big problem because we only have two feedback loops (for f=0): One inner and one overall (outer) loop. As a second step, you could apply the final value theorem which gives you the output in the time domain (after transients have been settled).

5. What kind of DC motor is this and what does the circuit do?

That looks like a DC motor of the type used in tape cassette players.Why does it need that circuit and what does it do?For music reproduction with accurate pitch constant motor speed is required. Achieving this in battery powered equipment requires addition of a voltage regulator or speed controller as DC motors' speed varies (nearly linearly) with voltage. The potentiometer in the motor allows the speed to be factory set.I modified one such motor on a good tape deck, adding an external pot and switch to allow some pitch adjustment so that I did not have to keep retuning my guitar between tracks / albums.The TDA1151 seems to be one simple device intended for such applications.

6. Can I use a resistor to slow down a DC motor?

This assumes you've just got a little motor such as is common in battery-powered toys or fans, running at low voltage, and you just want to slow it down a little. It also assumes that you really want a cheap and cheerful solution rather than a control loop, and are prepared to tolerate some inefficiency.One or more series diodes may be used to drop the voltage the motor sees while still allowing it to draw more current under load than a resistor. This may be too much for the 1. 5V motor (though it may be possible with a careful choice of diode taking into account the forward voltage drop at the current you will use) but works well in the 3--12V range, for example for slowing PC fans to make them quieter

7. I want to make a electric car and i want to buy a DC motor for it. i need some guidances for choosing it.?

That's pretty slow. The weight is about that of a medium sized motorcycle. I would guess at 10 HP, or 7000 watts. Your voltage is 72 volts, so that would be about 100 amps at full power, and the batteries would last half an hour. Dropping down to 5 HP might be better for battery life. .

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Voltage Divider in Parallel with DC Motor Driven by H-Bridge: Can Someone Explain Me This Circuit?
The two resistors (R10 and R11) provide a voltage that the processor uses to detect when the motor is stalled.When running normally, the voltage at the junction of R10 and R11 will be around half the supply voltage. Probably have to subtract voltage drops across the transistors from that. When the motor stalls, it becomes basically a short circuit. The voltage at R10 and R11 will drop.The processor is probably using an ADC to monitor the voltage. The engineers might also have been real tricky and arranged it so that they could use a digit input to detect a stall. They could jigger it so that the normal operating voltage is above the level for "high" on the processor, and below the level for "low" when the motor stalls.C1 smooths the stall detect signal. It forms a low pass filter together with R10 and R11. The cutoff will probably be way lower than the PWM frequency. It also cleans up "trash" from the motor brushes.I am not going to try to guess the real voltages present at R10 and R11. That's going to depend on the transistors, the power supply, the motor, and how "hard" the processor is driving the transistors (whether they are in saturation or not. )Not everything you would need to calculate is there, and I am not sure I could do it anyway.Low voltage when stalled, somewhat higher when running normally1. Can I use a resistor to slow down a DC motor?You CAN use a resistor, but understand all you are doing is dumping power out the resistor to drop the voltage to the motor.If you want to go really slow, the resistor method will probably cause the motor to stall way before you reach your desired RPM.Using PWM ensures you get pulses of full torque, which allows you to drive the motor to really slow speeds.2. If I have 10 3000Farad capacitors at 2.7V wired in series. What would happen if I hooked up a dc motor?The voltage would decay very quickly. The motor current at 24 volts will be 4(746)/24=124 amps. The total capacitance is 300 F. dV/dt=I/C=124/300=.41 volts/sec. This is a rough approximation to figure out how long the caps will power the motor, but you can see it wo not run very long3. Overvolting a DC motor while keeping power constantThe since the speed is directly proportional to voltage, the motor will attempt to run at 133% of rated speed. If you are driving something like a fan for centrifugal pump, the torque load on the motor would increase to 1.33 X 1.33 = 1.77 pr 177% of rated load. The increased load will prevent the motor from going that fast, but it is still likely to be overloaded and overheat rather quickly. The driven equipment might not fare too well either. Look for or design a speed controller that will limit he voltage to 36 volts.It is also possible that the commutator will have arcing among the segments with increased voltage. The winding insulation will probably not have a problem.Re commentWith traction applications, the load torque will increase with speed to the extent that the vehicle is subject to aerodynamic drag. Increasing the voltage does not increase the torque capability of the motor. Therefore, any load that requires more torque to operate at a higher speed has the potential of overload the motor if it is operated above rated speed. With a traction application, I would think that you would need a speed controller. I see that you are intending to use a chopper. That should be configured to adjust and limit the speed and limit the current. Since it controls the voltage by controlling the duty cycle, but the peak voltage would still be 48 V. There may be no problem with the commutator, but you should look to see if there is any problem.4. Why is speed of a DC motor inversely proportional to the armature current?Because every running DC motor is a DC generator too.If you see the construction of a permanent magnet DC motor and generator, it will be the same. When you apply DC power to such a motor, the armature starts turning providing mechanical power. At the same time, the armature windings moving in the magnetic feild (essentially, a generator of sorts) generates an emf too, but in reverse polarity to the applied voltage. This emf opposes the applied voltage and reduces the current flow through the armature coils. The faster the armature revolves, the more the back emf generated will be. This reduces the armature current.It confirms to the law of conservation of energy too.When the rotating motor shaft has no applied load, the only energy spent will be as resistance and frictional heat through the coils and bearings. Since very little energy will be spent this way, only that much energy will be drawn from the power source. If the power source is of fixed voltage type, less energy drawn means low current flow throught the circuit.Why is speed of a DC motor inversely proportional to the armature current?.
How to Decide the Rating of DC Motor for a Given Torque?
Multiply the 2000 N by the limiting speed in m/s you would like the vehicle to travel at and you have your power requirement in Watts. You will need to use the same speed as for the air resistance calculation or your 2000N will be up for revision. By the way, considering you have wheels, your coefficient of friction looks very much too high. The magic of the invention of the wheel was that it practically eliminated friction in the matter of moving things around. Calculating friction by weight and coefficient is not really relevant for any, even only half decent, wheels. I would venture to say that, as a safe approximation of the wheel, you can reduce your friction coefficient to 0.05 with impunity!1. Can I apply 36V power to a 12V 550 DC motor?Q "Can I apply 36V power to a 12V DC motor?"Of course you can. You can apply whatever voltage you like to a motor. However, whether, and for how long it will survive is another matter. If 36V were to be applied to a 12V motor, then most likely it would run, and very fast but at some point it will almost certainly self-destruct. Very possibly it will burn out, although the sheer speed that it's spinning at might cause it to disintegrate.A very important point is whether there's a significant load on the motor. In a no-load situation the motor will generally spin up to a speed where the back-EMF will reduce the net voltage to the point where it equals the friction and air resistance loads. In that case, it may be physical factors, such as bearings that give out first. If, however, there's a significant load on the motor, and back-EMF is not such an issue, then very likely it will be the motor windings that burn out first. Can I apply 36V power to a 12V 550 DC motor?Can I apply 36V power to a 12V DC motor?2. DC motor parameter identification using microcontrollerI will just add on PID part of your question.Is there a way to build a software routine which identify the motor's characteristics and adjust the parameters of the controller (let's say a PID) according to what is best for that specific motor?No, this is not possible. Motor characteristics have very little to do with PID control. It is the reaction of entire system (a. k. a. Plant) and the desired PID behavior (response time, stabilization time, overshot etc.) that define control terms.There are algorithms that can measure the response of the actual system and tune up control loop. However using these algorithms requires the plant to be controllable by software outside of control loop and safe to be driven arbitrary (i. e. often outside normal operational limits). In addition the controllable method for injection of external disturbances might be required.All of the above is the reason why there are no one-controller-fits-all devices on the market, AFAIK. Having said that, some devices, like hobby servos, can be tuned for a wide range of the operating conditions. The control loop might not be optimal for specific application but would be "good enough" and indeed will be tightly bound to specific motor characteristics. In this case PID tuning is happening at the design and testing times and fixed before final production begins.3. What can the ohms of a DC motor tell me about itself?For a given motor, torque is proportional to current, back emf to rpm. This means that at some rpm, the back emf is sufficiently large that the difference between supply voltage and back emf is so small it cannot generate a current larger than the friction. This is the maximum no-load rpm (for DC motors, but AC work similar).4. How do I rotate a DC motor by roughly 45 degrees?If I were you, I would use a stepper motor for the job, it is much easier to control for precise angles! Well, it will be quite difficult doing it with a DC motor, but here are my two cents ;) At the applied voltage, find out the max RPS (rotations per second), you might need to write a specific program for that and use an optical interrupter circuitry across the shaft of the motor which will bear a single or two slotted wheel. Once you determine max RPS (lets denote it as X) at the applied voltage, it comes to this: in one second -----> X rotations Y time ------> 1/8 rotation (since 45 degrees equals 1/8 rotation ) then simply you will need to apply voltage across the motor for Y time (in milliseconds i guess) But again, use a stepper motor, it is used when controlled movement is required. They can be used to advantage in applications where you need to control rotation angle, speed, position and synchronism. Just google it an you will find ample resources how to use it!
If a DC Motoru2019s Input Is Interchange, What Will Happen?
Do you mean if you reversed the power supply wires?It depends on the type of motor. If it's a series connected (universal) motor, or a shunt connected motor, it will run the same direction no matter what the power polarity. That is why a universal motor can run on AC or DC. If you want to reverse the direction, you have to reverse the voltage to just the armature or just the field windings.But if it's a PM (permanent magnet) motor, it will reverse direction.If a DC motor's input is interchange, what will happen?.1. Does increasing the temperature of a system 30 degrees always require heat transfer? Justify with an example.No, but it always involves energy transfer. As an example:Consider your refrigerator. When the refrigerant gas is compressed it gets hot. It is then cooled through a heat exchanger with the outside air (which is why your cat likes to lay down in front of the nice warm vent at the bottom). The gas is then allowed to expand, which makes it very cold (same thing happens with a can of compressed air) and another heat exchanger inside the unit cools the interior.The heat rise in the compressor is almost entirely due to compression of the gas. The waste heat from motor is minor and does not contribute to it (it happens in another part of the machine). The only energy input is the mechanical energy of the compressor.Does increasing the temperature of a system 30 degrees always require heat transfer? Justify with an example.2. how to tune a turntable?Only the "correct" strobe pattern can be made to stand still, which should occur within the middle third of the control's physical range. If the speed wo not stay set, there is a problem that requires correction, such as a bad belt or motor, and if the motor is a servo type, the drive circuit may have one or more bad components and/or connections. Some models have internal adjustments that get 'noisy'; these can usually be corrected by a competent technician.3. Can anyone please give instructions for installation of a 240v dryer receptacle?You have a problem as for the old method of wiring a dryer you would need 2 hots and a neutral and the neutral use to act as a neutral and a ground but the neutral cannot be a bare wire with no insulation. Since you have 2 hots the black and the white wires that is OK but since you cannot use that bare copper wire you need to rewire. The new method for dryers are this: you need a four wire cable Black & Red (the hots) a white (neutral) and a bare copper (the ground) You need # 10 wire and a 2 pole 30 amp breaker for a dryer circuit. Some one made a mistake using a 3 wire cable with a bare wire as even the old method needed 3 insulated wires. In the old method you could tie the neutral to the neutral in the dryer and also tie it to the frame as a ground. In the new method you have the neutral tied only to dryer neutral and the bare tied to dryer frame. You cannot use a bare wire if it carries a load. The only way that you could use what you have is that the heat coil, the motor and the timer would all have to be run by 240 volts and the dryer would need no neutral, but I am sure your timer and motor are 120 volts so a neutral would be needed.4. Is this brushless RC good?nicely, in my u . s ., we installation many horse to R/C Truggy. yet extremely, if you are extremely into drag racing, a nitro engine is likely one in each and every of the superb; yet be warned that you will likely have many problems with it. in case you go with the finest of both worlds, I propose brushless, because they are often really a lot upkeep free, plus they are quick sufficient. Plus, nitro engines own too a lot torque for genuine off highway relaxing. I propose a brushless motor from Novak with a good ESC. confirm the ESC IS FOR BRUSHLESS automobiles! Novak sells extremely good brushless motor/esc mixtures. I surely have a Stampede, it truly is at present no longer operating, yet I ran a brushed approach R motor, which become kick ***. no longer to instruct the 550 E-Maxx motor is truly kick *** for off roading, also. which could be like the perfect motor change for off roading and drag racing. examine it out.
How to Make a Dc Motor Speed Controller
Previously I made a DC motor Speed Controller, the design was good but it could be used with only 12 V motors.Soon I needed to control 24 V motors, so I had to come up with a design I can use for the work. I saw it would be easy to use a 7812 with the 555 or a zener, but I wanted something very versatile, then decided to use lm317 as a voltage regulator.If you like the video do subscribe Lm317 : sink : k Pot : k Pot Knob : Ohm resistor Board terminal: AWG wire : Diode : if you are like me, you can salvage the most items from electronic boards Start by soldering the lm317 to the Veroboard.I had already attached the heat sink to the Lm317 with the help of m4 nut and bolt.There are three pins in the lm317 1 Adjust2 V out3 V inSoldering the220 ohm resistor with Adjust and V out.A diode will be added parallel to the 220 Ohm resistor with the cathode toward the Adjust pin.Then take the 10 k pot and add it to solder it to Adjust and GroundA 0.1 uF disc or 1.0 uF bypass capacitor is recommended to reduce the sensitivity to input line impedance.I have used 1 uF. The adjustment terminal may be bypassed to ground to improve ripple rejection.A 10 F capacitor should improve ripple rejection about 15 dB.Connection The cathode of 1 uF capacitor connects to the V in and the anode to the Gnd The cathode of 10 uF capacitor connects to the Adj in and the anode to the GndIt is a diode used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted.Connection The cathode of the diode is connected to V in.The anode of the diode is connected to V out.Adjusting the potentiometer changes the V out,The minimum voltage will be 1.25V and the max will the applied voltage.The only drawback is the efficiency is not so great, Being a linear regulator it will change the voltage drop to heat, so you will need a good heat sink for higher voltages applied .Like my facebook page And Subscribe to my channel
Change Direction of 12v DC Motor Rotation Using Relay
![reversing a dc motor]This is a minimal reversing circuit for a dc motor. It is missing a stop button, start, and interlocks, and it can all be added to it. It does not start on it's own, one limit switch has to be pushed. The circuit has a dc motor, 2 relays, and 2 limit switches. The interlocks are important, because if the 2 relays are energized at the same time, it is a short circuit. As drawn, the whole circuit is on a same voltage (relay coils would be same voltage as the motor). The bottom part can be separated, and then the motor can be a different voltage than the relay coils. Normally a circuit like this also uses additional overtravel limit switches, in case the two fail.1. VARIAC as DC motor speed controller from DC power sourceI have consulted with my professors and they do not believe it would work.Professors are very, very clever people*. If they say it is not possible I would drop it. In fact I also believe it is not possible. Variacs are transformers and transformers are relying on inductance. That is : they need a continuous changing current. With DC you only get the resistance of the copper wire which is very low. Maybe your Chinese friend is using the Variac as a giant potentiometer. You do not want that as it will heat up!*Which also occasionally make errors2. DC motor makes noise but does not rotateanalogWrite uses PWM. Is the motor you are using designed for pulsed operation? Try using3. In starting a separately excited DC motor using initial resistors, what will happen if the field circuit is broken while the motor is running?It depends on the loading of the motor. If it is unloaded or lightly loaded, the RPM is inversely proportional to the field current. Reducing the filed current increases the RPM. If the field current drops to zero, the maximum RPM theoretically goes to infinity. This is undesirable, because the rotor can fly apart at some high speed. A DC motor starter needs to have a mechanism to sense loss of field current and immediately cut power to the armature.In starting a separately excited DC motor using initial resistors, what will happen if the field circuit is broken while the motor is running?.4. How can I develop a program to control the speed of a DC motor?I will write the answer in brief.So the simplest way is to reduce the voltage supply, but that reduces the torque of the motor as well. But if you want to reduce just the speed at constant torque then use a motor driver, usually a dual H bridge or a H bridge IC (L293D or L298 ). So you can reffer to the datasheets of the IC's to know how and at what time delays to control it to achieve you r=desired speed reduction. And in the case of stepper motor you can just control the step angle wise rotation to get your speed control.You can also give the control inputs using a joystick/knob or a potentiometer etc at proportionate or PI or PD control to it . This increases the scope of your controls and precision can be decided by you. thanks for the A2A.5. How do I control a DC motor using a switch in 8051 mc? What is the code for it in keil?So the basic diagram for the above mentioned question can be drawn as follow:So the control switch is connected to P1.0 and the output of microcontroller is taken from P2.0 and P2.1. The IC ILQ74 is the optoisolator use to insolate the power circuit from the control circuit. And the IC L293D is the special functioning IC which helps in controlling the direction of rotation of the DC motor.#include#includesbit input1= P2^0;sbit input2= P2^1;sbit en= P2^2;sbit SW= P1^0;void main() SW=1; // declare as input// input1=0; // declare as output// input2=0; // declare as output// en=0; // declare as output// while(1) if(SW==1) en=1; input1=1; // for clockwise input2=0; // else en=1; input1=0; // for anticlockwise input2=1; // So you can implement this code in keil and check the output on porteus. The first statement in the if is for the clockwise rotation of motor and the later in the else is for anticlockwise rotation. Hope this will help you. What is the code for it in keil?
How to Increase Torque and Decrease RPM of a DC Motor?
I shall make the assumption the machine you have is a brushedDC machine.Torque = current (Kt being the constant of proportionality)Speed = voltage. (Ke being the constant of proportionality)In actual fact this is loosely accurate for all machine types but rather than being directly proportional it becomes a bit more complex & usually involves frequency. ( see How do DC motors work with respect to current, and what consequence is the current through them?)To reduce the speed the simplest method is to reduce the voltage be it by replacing the 9V battery by a... 8V battery or via PWM.To increase the torque ... that a bit harder. All you can do, electrically (as you can do it mechanically via gears), is to reduce the source impedance to maximise the current that can be delivered for a given stator impedance.1. Would you invest in Ford Motor Company?DEPENDING IF THE GOVERMENT GIVES THEM THE BAIL OUT THEY ARE ASKING FOR2. who is the best racer in ducati motor race?In Ducati it must be Casey Stoner he handles the Red Monster with great skill but watch this space it could all change next year when Rossi goes to Ducati 3. Nikon lens for macro photography without focus motor inside; instead having screw to make autofocus from Camera body motor option?AF lenses are the ones without motors, AF-S have them. Other manufacturers have different designations, and the D90 allows metering with manual-focus Nikkors too4. Can you put a car motor inside a boat?WOW! Not a good idea! A marine engine is a totally different critter than a car engine. All the electrical components and the fuel delivery are different. Read : MARINE alternator, starter, switches, fuel pump, carburetor, intake manifold etc, etc, it is a HUGE safety issue. Yes, the block is the same but from there-----no comparison. Please check with a marine dealer before using a converted car engine for your own safety! Bill5. Constant RPM Low Speed Motor drive [closed]This could be relatively easy if you are willing to live with a few limitations. They are: AC operation only, single speed (no slewing) and an equatorial mount.If those limitations are ok with you, then an AC synchronous motor (a clock motor) with a lot of gearing will do the trick. This is what mid-to-high end telescopes came with before microprocessor-based drives became popular.You can run such a drive with batteries if you add an inverter that is frequency accurate. You can also provide some slight slewing (around half-speed to 2x speed) if the inverter frequency can be adjusted. I built such an inverter back in the 90s for under $30 (to drive an existing Meade clock drive).If you do not have an equatorial mount (like a Dobsonian mount), then it is much more difficult. You would need two motors and a computer control. Brushed DC motors with encoder feedback would work best. That would also allow you to slew at high speed6. how do you make an electrical motor?Assuming you mean an electric motor.... As basically as I can. It is an electrical device. Coils of wire are wound around a magnet. The magnet is attached to a shaft. When the electric is on, it causes the wires to create a magnetic force. This force is opposite in direction to the magnets causing them to spin. As they spin the attached shaft also spins. A motor is born. Can be explained in more detail and more complicated ways, describing poles, shifting fields, force interactions and such, but this is the absolute basic idea.7. How does this electric motor work?An electric motor refers to a type of AC motor that has the power supplied to the rotor by means of electromagnetic induction and not by slip rings and commutators8. what motor is in a 1916 American LaFrance fire truck?they had many many engines from buda to waukesha's id have to see pics9. where are the indianapolis motor speedway bricks buried?Under the race track, I know there are some at the start/finish line, where they kiss the bricks when they win. Go Team Penske.10. can a washing machine motor be used on a go cart?No, The motor will be 110v or 220v You need a 12v or 24v motor - so it will run off batteries. Find the biggest 12v DC or 24v DC motor you can, Attach it to a heavy duty switch and some 12v Car batteries. for 12v motor use 1 or 2 or 12v batteries in parallel, for 24v motor use two 12v in series.
Effect, If Any, of Input Voltage on RPM of DC Motor
But does input voltage have an effect on RPM?Yes. A DC motor speed will be proportional to voltage (for a given load resistance).I am wondering why the seller provided a 12V adapter when the motor says 24V. Is the seller maybe relying upon the 12V DC adapter to reduce the RPM? Possibly to reduce the RPM but more likely to limit the current should the grinder stall. The motor is rated at 6 W. Power, voltage and current are related by $ P = VI $ (where I is current). At 24 V and 6 W we can calculate maximum continuous current, $ I = frac PV = frac 624 = 0. 25A$. Current will increase with increasing load reaching a maximum at stall. You could estimate what the stall current will be by measuring the motor coil resistance and calculating the stall current from Ohm's Law, $ V = IR $, as follows: $ I_STALL = frac VR = frac 24R $. I suspect that you will find that it's more than 0. 25 A. By reducing the voltage to 12 V the stall current will be reduced by half but since both V and I have been halved the power dissipated during a stall will be one quarter of the 24 V value. $ I_STALL = frac VR = frac 12R $ in this case.Should I be searching for a 12V DC (as supplied by the seller) or a 24V DC adapter?Does it turn the coffee? Try it out with a 12 V, 0. 5 or 1 A, wall-wart PSU and see if you can make some measurements. Report back!1. Where can I buy a Pulse Width Modulation DC motor control switch?PWM is not a "switch" that you buy. I do not know why you have rejected circuits utilising a 555 timer, that's quite a reasonable device to derive the on/ off timings needed. 1/4 and 1/2 seconds are very slow switching times, why those? Smooth motor speed control requires far higher switching frequency. Somehow, I think you have the wrong slant on what PWM speed control is. If all you are doing is what you say, switch a motor on and off every whatever, the 555 based circuitry can still do this.2. Our DC Motor gives high Current at relatively low load. Why? [closed]That is some serious current. I would suggest checking your connections are all good, clean and tight. Take resistance readings across the joints or through the run of the cable, even 1 Ohme across a joint would cause problems at this current. Look for HOT joints. Have the cables been changed? Maybe they have melted or damaged.Your statement "A DC motor can easily PULL load upto 150 Tons at 750amps" is not true, it depends on the motor, a 6V model railway motor wont do 750 amps.3. Can this analog speed regulation for a DC motor be used for this scenario?That circuit depends on indirectly measuring the back-EMF of the motor and servoing it to a constant by (again, indirectly) compensating for the motor's winding and commutator resistance.But the motor's speed vs. back-EMF "constant" is not constant with temperature, nor is the winding resistance.So you may get better regulation over temperature, but I do not think you will get tremendously good regulation. I would recommend that you measure the speed and wrap it with a PID. If you tune it conservatively you wo not see a "jerk", although you may have to wait for it to stabilize4. does the current consumption of a DC motor double if the load doubles?a million. Impedance (Z) = V/I = 250V/10A = 25 Ohms. If easily the fee of Z does not replace and the Voltage is decreased to one hundred ten Volts then the present will inevitably shrink to 110V/25 Ohms = 4.4 Amps. reaction to extra info; 2. If the appliance replace into easily drawing (no longer only rated at) 27. 2 Amps with 220 Volts utilized then Z of equipment = (220/27.2) Ohms whilst 220 Volts is utilized. If Z does not replace whilst the 220 Volts is decreased to one hundred ten Volts then the present would be decreased to (110V)/[(220/27.2)Ohm] = 13.6 Amps If the Wattage replace into 3200W at 220 Volts then the capacity ingredient of the load is (3,200W) / [(220)*(27. 2)]VA = . 535 the capacity might cut back to a cost of (110V)*(13.6A)*(.535) = 800 Watts
In Order to Understand Bldc Motors and Their Working Principle, I Read a Lot on the Web, and I See T
Steppers are intended to work in a open loop without feedback. The current trough windings is preset to a constant value at the driver (chopper) and the rotor is hold at certain position...all the theory you have already seen on the web. If we closer look at the holding position of stepper motor, we can notice that torque is zero, because the rotor field and stator field are alligned. A max torque is produced when you want to move the rotor from its holding position, looking electricaly this is 90 degress difference between rotor field and startor field - you can use two magnets to proove that, the force is maximal when magnets are placed 90 degress from each to other. With BLDC and PMSM you have a feedback, as you depicted a hall sensor for proper commutation. If you look carefuly the stator is always commutated in such way that stator field is 90 deg with respect to the rotor field. In this case the rotor would give max torque always, therefore you also need a current regulator.In few words: The current trough BLDC is always proportional to the output torque of the motor, at standstill with no static load, the current is zero. The stator field in the BLDC is always oriented to be 90 deg shifted with respect to rotor filed.1. What is PBH?Please specify your term as I Google this and found many aspects related to various fields. So I just only say that this term may be related to:PBH = Pratapgarh ( A district of Uttar Pradesh)PBH (Precision Bearing House) is one of the leading Industrial Automation Suppliers & Manufacturers in India with products supply such as Maxima Aluminium Profile, Stepper Motor, Stepper Drive, Actuators, Linear Guide, Ball Screw, Hardened Shaft, Cable Drag Chain.PBH is also a test in Mathematics.So you have to mention with which field your term is related. What is PBH?.2. Choosing Stepper Motor - Driver CombinationSparkfun.com has some good tutorials on PCB design with eagle which is free. (with some restrictions). Upverter.com is also a good place to cut your teeth on, the learning curve will be slightly higher but less part creation which will save you time. As far as PCB design goes, make sure you have adequate power caps next to power hungry IC's. Find a PCB trace width table on the internet and make sure your traces can handle the current going through them. Typically you make big powerground planes because it lowers the inductance and resistance of the copper on the board. You can think of each trace as a tiny resistor and inductor, you can actually calculate the values of each trace/plane. A big ground plane also gives a place for RF from processors or PWM to go to and makes traces less of an antenna. If your doing a two layer design it makes fitting the power planes into the PCB more complicated because you it forces you to run traces through your ground plane. This is where PCB design turns into more of an art, you are trying to balance multiple requirements. The picture here kind of illustrates this. make sure your schematic is sound, check all inputsoutputs and vcc and ground. Do they make sense? did you reverse anything? Did you get all the pins right and correct to the datasheets? Then check the PCB. Are the pads the correct sizes on the parts? Do you need mounting holes? Do you want test points to make it easier to troubleshoot? (Oh and vias carry current, did you size those right as well?)Then send it off, if it works 100% after you stuff it you will be my hero.3. Why is it better to ramp a stepper motor than not?The moment of inertia for the driven system may be significant, and the motor cannot accelerate to final angular velocity without putting very high torque on the shaft. You want to limit that torque, so the motor does not stall (miss a step), or overstress (twist) a shaft, or a cause a coupling to slip. Ramping the angular velocity up (and down) does this.If there is 'stiction' in the moving system (as, when a lubricating film must be reestablished by rotation), slow initial steps can help (but ramping down does not ) .Steppers move in a jerky fashion, there is significant acceleration on each step, so it is common to use a compliant motor coupling (with some springiness) in order to smooth the rotation of the driven system. In a system WITHOUT a compliant coupling, ramping might not be as effective.
Can You Use a Dc Motor Controller?
NO! Do not do because a DC motor controller puts DC current into the circuit who acts as control, or, puts a variable voltage across it to define the speed of the controlled motor. You need to (in most of the situations) control the phase angle to make a variable speed and the power supplied to the motor. Good luck.1. Drive DC Motor with H Bridge(H Bridge turns off too slow and problem with current monitor)To switch a power MOSFET, you have to move a substantial charge through the gate and the source. The datasheet will specify something like "total gate charge". In order to move all that charge in a short time, you need high current. And in your circuit you can not have high current, since the current through the gate is ultimately limited by R1 and R3.In other words, the problem is that with your design, U1B does not fully turn off until some time after S1 goes low. And when it does turn off, it does so slowly, which is why you see the voltage at T1 ramp down slowly. See What is MOSFET gate drive capability and why do I care about it?In order to reduce this problem, you need to increase the current that your gate driver can source and sink. A simplistic solution is to add a pair of emitter-followers, like this:simulate this circuit - Schematic created using CircuitLabYou can get fancier with a discrete approach like the one that follows. In addition to having emitter followers to increase the current drive, it uses a clamp (D13, D23) to reduce the storage delay of the BJTs Q11 and Q21. You can read more about it in another answer.Or, you can just buy an integrated MOSFET gate driver and call it a day2. Will a dc motor generate as much power as it can put out?Nope... motors & generators are not 100% efficient, thus power out is always less than power in, regardless of the direction of flow. For a smaller motor like that you are probably looking at around 20% loss from input power to output power. With a higher mechanical input power (>6500 rpm at 5in-oz) you might get 150W electrical output, but I would look pretty carefully at the manufacturer's data to be sure you are not overheating the windings.3. DC motor and encoder for pendulum with low static frictionActually, you need to rethink your controller. As stated, forcing the motor voltage to zero will cause the motor to provide a large damping force to the pendulum. The reason is that any motion of the motor shaft will cause the motor to act as a generator. Keeping the motor voltage at zero is effectively the same as providing an extremely small resistance across the motor (E = iR, after all), and this will resist any motor motion. So simply controlling the motor voltage will not allow the pendulum to swing freely, regardless of friction4. Question about a DC motor comutator?The commutator bars are the strips of copper mounted arount the perimiter of the commutator . As you pointed out each commutator bar is connected to the end of an armature coil. You are correct in your observation that a brush can bridge across two commutator bars during the transisition of switching from one set of coils to the other. Since the armature coils are wound in the same direction and are mounted along side one another the electricity produced in these adjacent coils is inphase and at similar (but not equal) voltages. In effect during this breif period where a brush bridges between two adjacent commutator bars the effect is like having two armature coils in parallel. During this change over period two coils share the load so current does drop in one coil as it increases in the other coil. BUT !!!! You have forgotten to consider that the voltage produced in the armature is constantly changing and is actually an AC sine wave. Maximum potential is generated as the coils cut across the magnetic line of flux where they are concentrated at the field poles and also at a right angle to the coils movement. At the coil continues to rotate away from the field pole the flux density decreases and motion of the coil tend to travel in parallel to the lines of flux. the result is little to no voltage is produced. Again this is illustrated in an AC sine wave which shows a constantly changing level of voltage between zero and peak Pos and neg voltages. In order to minimize brush sparking and major changes in current flows in the armature coils, the brushes are located at an angular position with respect to the rotor where the AC sine wave voltage produced within the armature winding is at a zero or near zero value. So the switching of the coils and the bridging of the adjacent commutator bars which you are questioning is happening at a point in the armature rotation where there is little if any voltage being generated in the armature. The effect is temporarly placing two armature coils in parallel to each other as the gap between two adjacent commutator bars passes under a brush. This is one of several reasons why the
Why Is There a 104 Disk Capacitor on a Small DC Motor.?
probably to suppress arcing or the noise from arcing from the brushes1. Who is the manufacturer of the Mtd Ohv motor?Depends on the model... Most either are Briggs & Stratton or Techumsen2. Whats the voltage at the motor terminals?RLA : 8 could be anticipated for a million/2hp 120V single area. 40 9 Amperes could be LRA for the comparable motor. A frequency converter (VFD) is not synonymous with a area converter (220 single to 220 3 area). if your gadget works with a single area VFD, why are you attempting to run it on polyphase? playstation : there is not any such factor as 3 area one hundred forty Volt. what is the motor's Voltage score?3. Power calculation for hoist motorAlmost right; just the wrong units.What you've correctly calculated is the energy needed from the motor (given to the load) each second. Energy per second is power. So the number is right, but it's joules/second, or Watts4. what motor oil brands manufacture generic motor oil?Chevron, PRO5. if you take a solar panel off a calculator and hook it up to a micro motor will the motor work?No the solar cell is too small and inefficient to power any motor you will encounter. In general, power for a calculator only has to supply the leakage current and some small switching current for the calculator (uA) and the motor will needs 10's of mA, even a tiny one.6. HOW OLD MY BOAT MOTOR IS?I do not find you exact model number but 2001 and 2004 Johnson 225 HP outboard motors have model numbers that are very close7. the cable in the window motor slipped and came out to far?Yes I have replaced many window regulators8. DC-DC converter to drive DC motorI do not know what you mean by security caveats with that solution as there's nothing wireless and if the person got to the device, they would be able to dismantle it one way or another.For a high wattage motor, efficiency is key in a converter as well as current sourcing capability. I would recommend a buck converter for its simplicity, efficiency and lack of more requirements (such as isolation, variable voltage, etc. ). If you are only using the battery for inrush and reverse current coverage, I am wondering why you do not go towards a supercap setup which would be lighter and probably cheaper. Your battery of choice depends on weight and cost requirements9. Motor Magnets at Best Price in IndiaWith the assistance of our team, we are engaged in providing bulk of Electric Motor Magnets. These Electric Motor Magnets are sturdily constructed by the certified vendor of the industry. These Electric Motor Magnets are widely used by industries in the manufacturing of electric motor. We keep the various demands and10. Teleflex will not turn motor?First guess is a striped cable at the helm.Usely the problem is at the steering tube on the engine11. Mercury out board boat motor decals, looking everywhere ,need one for a 2003 125hp ocean series motor?I agree with botin in VA, but you do not NEED it ,you do not even want it. You know it has 125 HP, it's just marketing.12. Are motor pocket rockets illegal?they are illegal for street use in ALL 50 states. save yer cash and get a real bike. did ya catch that? they are ILLEGAL in ALL 50 states to ride on the street anywhere13. Capacitor start motor is humming?i've got self belief the technical term is "knackered". Discoloured insulation on windings is usually a demonstration of overheating. that would have been brought about by any of fairly some countless issues yet actual, you are watching a re-wind. And the gadget which cuts out the starter winding while the motor is as much as velocity (centrifugal or thermal swap) is likewise suspect. yet your rewinding company will examine that out14. Learn to ride a motor bike?It is difficult to teach yourself. Get a good helmet and join a safety course to learn to ride, the lessons are transferable15. hot tub motor problem?I replaced my hot tub two stage pump last year. Because my Garden Leasure hot tub has two gate valves I could close off the water inside the tub and trade out the pump with only a gallon of water. after I clocked the water outlet to vertical. Wire to wire plug the pump in and all has been good for a year now
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