motor control

  1. busevaran

    Trying to control a motor speed with a PID circuit.

    Hi everyone! I'm Buse. I'm trying to control a motor speed for a personal project. You can find the schematic of the circuit I found on a book. This circuit works with only the PID parts contrcuted. My problem start when I add the other parts. For example, U1 opamp (top left) is supposed to...
  2. D

    Speed Control of single phase shaded pole motor

    I have a group project where I have to control the speed of a single-phase shaded pole induction motor. My plan was to use a Triac-based circuit however, all Triac circuits I have seen use a potentiometer to control the speed of the motor. In this project, the motor's speed is dependent on an...
  3. S

    Op-Amp buffer Enable/Disable

    I am designing an electric veichle controller for a University project. The motor driver receives an analog signal (0-12V) to adjust the speed. I use a digipot followed by a buffer to convert the digital signal of the controller to ana analog one. Now I need some way to enable an disable each...
  4. Lawrence White

    Struggling to get this MC33035 to work, can anyone help at all?

    Afternoon everyone, Getting rather frustated with somethign that seems straightforward to me... I have researched and corrected any mistakes I have made, done a rebuild several times, but can never get this thing to work. draws about 10mA on a 12V test voltage and thats it. nothing seems to...
  5. B

    Startups increasing efficiency in motors. Revolutionary ideas or old ideas dressed up with marketing?

    I was looking into companies or startups that were doing things with motors to improve efficiency. I stumbled upon Turntide Technologies, which has a partnership with Amazon. Turntide is making a software-driven motor that "enables precise and reliable control to effectively use every watt of...
  6. P

    Need advice on how to speed control 4.25HP treadmill motor w/o MC2100 MCB

    Just have to say at the outset that this forum is pretty awesome, and everyone is so patient with noobs (like me). I’m a woodworker looking to put to use the treadmill motor I harvested from my wife’s never-used treadmill. It’s a 4.25HP pmdc motor, cont duty at 130vdc/3171 watts. I had the...
  7. Khisraw

    Controlling AC powered devices

    Hi All, As an electronics engineer, I have always worked with low voltage circuits and found it very difficult to control high voltage, AC powered devices. In my last project, I needed a power board that I can just plug my MCU or DSP and control an instrument that needs high power. I wanted an...
  8. S

    Turn 6V motor on/off via 555 timer astable circuit and 5V relay

    I have been working on a circuit to turn a motor on for several seconds, and then off for a longer period, using a 555 astable circuit. The on time needs to be around 5-10 seconds, and the off time needs to be about a minute. To get around the 50% duty cycle issue and allow for a longer off...
  9. U

    Question about inductive spiking

    I'm working on building an electric scooter and yesterday the speed controller had a MOSFET failure that I suspect was caused by inductive spiking. This was very surprising to me because I had a schottky diode in parallel with the motor to prevent this type of failure. I took the speed...
  10. G

    Pro-form 530ZLT burned control board, engine has no torque

    Hello, my treadmill pro-form 530zlt got burned control board. It has MC2100ELS-18W control board driving this motor. I'm stuck in difficult situation as after getting board running again motor has no torque, I can stop it by hand. I noticed that commutator brushes are giving noise and sparks...
  11. T

    DC motor current limiter

    Background: I'm working with an existing motor+driver board with Vin being supplied by a 4.2V LiPo -> TP4056 Charger Protection Board -> Boost Voltage Regulator. I've also got another subcircuit attached to the end of the TP4056 module through another voltage regulator and diode that powers a...
  12. R

    Scaling system for motor control in fixed-point MCU

    Hi, I am designing a motor control application (sensorless FOC control) using a fixed-point MCU. I understand I need to design a scaling system to handle all the motor parameter calculations, such as angle, speed, torque, etc. Would anyone please suggest where I should start? I only used MCU...
  13. H

    Motor rewind help

    Hi guys, I’m a trainee in motor rewinding, due to furlough I’ve been pretty much working on my own the last 4 months so trying to teach myself to some success but also becoming stuck as I am now. I have an old Woods of Colchester 60slot single phase 8pole perm cap 220/240 volt fan motor. It’s a...
  14. C

    Branch protection circuit breakers

    I was looking at the FAZ-NA line of circuit breakers by Eaton, and I was wondering if the capability of these to provide short-circuit interruption and thermal overcurrent protection removes the need of an overload relay. It seemed strange that these branch protectors were so much cheaper than...
  15. Dave1309

    Alternative for IBT-4 Motor Driver

    Hi there, I am making a servo using a wiper motor, Arduino and potentiometer. I need a motor driver the one in the tutorial I am following uses a IBT-4 Motor Driver, unfortunately it will take two months to be delivered to me. Are there any alternatives for this which will do the same function...
  16. Pkm28

    Need help with 3 phase submersible motor starter

    The submersible motor in my home works when it takes 13A on starting using a starter board. But nowadays on starting it takes 15A when turned ON and no water comes from ground. So how do I reduce the motor current from 15A to 13A. If you need some data related to starter I could provide that too.
  17. S

    Problem with PMSM motor model in Simulink

    Good afternoon, I have developed a Vector Control for a PMSM motor in Simulink using Simscape Electrical but my motor is not spinning. I have tried applying various speed values but nothing happens. I am applying a step signal from 0 to 300 but the motor speed still doesn't move. My error...
  18. C

    Can't solve simulation errors in FOC model (Simulink 2020a)

    Hi everyone, I am trying to develop an FOC algorithm (see screenshots attached) using the Motor Control Blockset in Simulink but I am getting the following errors (see screenshot attached). I don't know waht I am doing wrong since I fed my d and q currents to my Discrete PI controllers and fed...
  19. C

    Is the LdTrq input required in the Surface Mount PMSM block ?

    Hi everyone, I am trying to implement FOC algorithm in Simulink using the Motor Control Blockset. I want to simulate the iPower Gimbal Motor GBM2804H-100T with the Surface mount PMSM block. However, I don't understand what the LdTrq input is or how to set it up. SInce it is a motor I do not...
  20. C

    What does Ki*Ts mean in Discrete PI controller ?

    Hi everyone, I am using a Discrete PI controller for an FOC algorithm I am developing in Simulink using the Motor Control Blockset. I would like to use a Ki gain if 2. At the input of the block, I have an input labelled Ki*Ts. If I use my gain with a sampling period of, let's say 1ms, should...
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