Questions tagged [motor-controller]

Any circuit for driving a motor that's more complex than wiring it to a power source through a simple on/off switch. Examples include speed and torque control using H-bridges, brushless motor controllers, stepper controllers, VFDs. Constant speed examples include relay control, reversing, reduced-voltage starting, overload protection and other control requirements more complex than a simple 0n/off switch.

Filter by
Sorted by
Tagged with
0 votes
3 answers
54 views

Need to limit the torque on a spooler

I'm a newbie to DC motors. I'm trying to use a geared DC motor of 150RPM 70Ncm torque to pull in rope on a small spool. The rope is being released by other equipment. This rope is being released at ...
user avatar
  • 1
0 votes
0 answers
20 views

DC Motor driver with Recuperation Design

This is a design idea for a DC motor driver with good energy recuperation. I have a mobile machine, that includes a 250W motor with a heavy rotating mass and many spin up cycles during use. The ...
user avatar
  • 256
-3 votes
1 answer
32 views

How can I control an ESC with an STM32F303K8 [closed]

I couldn't find any documentation about it. The STM32 nucleo should control a brushless motor, with the speed depending on changing data. The ESC I'm using is a BHELI_S. Edit: I'm using CubeIDE and C
user avatar
0 votes
1 answer
44 views

Can you use a 12V lead acid battery to switch a contactor?

So I'm making a manual precharge circuit for a solar car's motor controllers, and need to use a 12 V source to switch a contactor on/off thus switching between a resistive path and a short circuit ...
user avatar
0 votes
1 answer
55 views

Power supply design requirements for IGBT driver

I'm trying to determine the proper power supply type and output current requirement to drive a three phase IGBT driver (this is a follow up to a previous question I asked, although focused on a ...
user avatar
  • 125
0 votes
1 answer
30 views

BLDC motor and bullet connectors getting hot

I am using the following components: Lemon RC 3S-2200mAh 25C/ 50C (burst) LiPo battery Readytosky 80A ESC DYS D2726-6 BLDC (2200kV BLDC motor) I am testing out the components with 1045 (10 in, 4.5 ...
user avatar
0 votes
1 answer
72 views

How does a system measure the speed of a servo motor using brushes on the commutator?

I have a servo motor with 4 brushes on its commutator. The motor is connected to a controller that enables the user to control the speed and at the same time it has an analog RPM meter which most ...
user avatar
0 votes
0 answers
23 views

SVPWM control on a BLDC Motor: No-load current is too high

I'm having issues running SVPWM control on a 2 pole-pairs. I'm using a Micronas HVC4223F with a 12V motor Faulhauber 2232BX4 with integrated Hall sensors. My card's half-bridges have over-current ...
user avatar
2 votes
3 answers
257 views

DC motor speed control without changing the voltage

My truck's (2013 F150) blower motor lets you control its speed using a dial on the dash. I assumed the dash dial change the resistance of the circuit the blower motor was on, but when I took voltage ...
user avatar
  • 127
1 vote
0 answers
64 views

Motor driver blanks out AM/FM radio reception

Story I do many restorations of 'boomboxes' (70s/80s/90s) especially the decks inside these units. Next to the common problems with belts, gears, pinch rollers, rubber rings etc there is another issue ...
user avatar
  • 1,022
0 votes
0 answers
64 views

Under FOC control, can current sampling be removed when the inductance of the motor is small?

I have dismantled a micro coreless servo motor produced by SIEMENS and made a copy of it. Then I designed an FOC driver board using single shunt and transplant the FOC algorithm to make a position ...
user avatar
0 votes
1 answer
32 views

Stand-alone ESC v.s. BLDC driver ICs, what's the difference?

I am designing a customized miniature drone for research and would like to embed the ESC for BLDC motor directly on board to save space and weight. I have searched a lot for ESC design online and can ...
user avatar
  • 131
1 vote
2 answers
71 views

Can I run a 775 DC motor with DC solid state relay? [closed]

I want to run a 775 DC motor with 12V DC power battery.DC motor link:https://www.nbleisonmotor.com/RS-775-Dc-Micro-Motor-pd6675924.html I didn’t find any suitable controller for this. The controller ...
user avatar
0 votes
0 answers
36 views

Are these H-Bridge motor driver controller ICs capable of reading position info from potentiometer?

I'm specifically referencing two examples of H-bridge motor driver controller ICs (BD6210 and WT7901). To more fully understand and troubleshoot the circuitry of a typical exercise bike or elliptical'...
user avatar
  • 101
0 votes
0 answers
43 views

I cannot find out why my PI controllers, ADRC, Clarke/Park, and/or SVPWM are not working

I took up a project recently, named "Active Disturbance Rejection Control of Permanent Magnet Synchronous Motor" proposed at MathWorks, and I intended to make it my minor project too. I ...
user avatar
4 votes
3 answers
1k views

Weird speed issues with brushed DC motors in parallel?

So I have a simple system where I want to run eight large DC brushed motors (for wheels) in parallel, which should give them all the same voltage, and they should independently change rpm depending on ...
user avatar
  • 49
0 votes
0 answers
36 views

Gear reduction vs PWM duty cycle limiting

I am wondering about adjusting the output RPMs of wheels in vehicle. Lets assume two situations, in which we are using BLDC motor with ESC, where the PWM is our controlling signal. We have got gear ...
user avatar
  • 61
2 votes
0 answers
52 views

How to prevent voltage spike from BLDC motor in ESC circuit

I'm implementing the circuit below by modifying it using STM32 (Bluepill) and adding some decoupling capacitors (100nF) to the bluepill and LM339 with the supply from the battery also connected to the ...
user avatar
0 votes
0 answers
25 views

ADC TP filter for current measurement (BLDC motor application)

I’m in the process of designing the current measurement for a motor control application (3-Phase). Now, the motor current is controlled @10kHz and the PWM is at 20kHz, so the cut-off frequency should ...
user avatar
0 votes
0 answers
37 views

Dual H-bridge DC motor driver using logic voltage supply and not actual voltage supply

I am trying to control two 12V motors with this H-bridge board using a 12 V 7 Ah battery and an Arduino Uno. What I have noticed is that my PWM signals are acting as on/off, and the motors are ...
user avatar
9 votes
6 answers
2k views

Can I drive a low-voltage MOSFET gate directly from a microcontroller?

We're working on this project for school where "reducing the number of components is essential". We need to operate a little brushed DC motor so we thought of using a simple low-side drive ...
user avatar
0 votes
1 answer
44 views

PLC Motor Control

Im trying to control the speed of 2 brushed motors with a click plc, I'm using 2 seperate power supplies, 1 for the plc, and 1 for the Motors. Is there any way to alter the voltage supplied to the ...
user avatar
  • 1
0 votes
1 answer
44 views

Lead width range for motor driver IC

I am creating a footprint for this part in Altium. I was able to get all the dimensions, but can't seem to figure out the lead width range as shown in this diagram: I was wondering if anyone could ...
user avatar
0 votes
0 answers
49 views

Brushless Motor Control Without ESC

I saw a video on the net, titled "How to Convert Car Alternator To Brushless Motor / No ESC With Mosfet Driver", link to it here. I understand in principle how an ESC works, but can't reason ...
user avatar
  • 515
1 vote
0 answers
52 views

Protections for bidirectional motor controller circuit for DC brushed motor

I am designing an H-bridge based DC motor controller. It should be able to control 4 quadrant operation of a DC motor, therefore I am using four STB85NF55T4 MOSFETs and four IN58198RL Schottky diodes ...
user avatar
  • 31
1 vote
0 answers
69 views

48V 30A PWM Brushed Motor Controller

I am trying to build a motor controller for 48V brushed motor. The motor draws around 20-30A current under load and peak to 70A sometimes. I was using an Arduino to generate PWM wave around 7kHz for ...
user avatar
0 votes
2 answers
75 views

How can I drive small motors with 3.7V PWM?

I want to use a small PWM driver PCB (that I hacked from a RC vibrator sex toy) to drive three other motors using a single 3.7V lithium-ion battery. (The motors are rated 3V.) The PWM driver ...
user avatar
  • 29
0 votes
1 answer
40 views

Power supply to an A4988 driver

I am starting to use the driver A4988, typically used for NEMA 17 motors and many others. As you may know, it has to separated VCC/GND pair of pins, one to supply the driver, the other for the motor ...
user avatar
1 vote
0 answers
34 views

Stepper Motor Driver CLK-IN vs Parallel-IN

I have a few questions about stepper motor drivers. I'm currently trying to build a PCB with a stepper motor driver IC to gain a better understanding of them. Here is the link to the IC I'm using: ...
user avatar
  • 33
0 votes
1 answer
40 views

Motor 12V 16RPM - how to calculate RPM based on PWM?

I bought a motor specified for 16 RPM at 12V. This motor is controlled using an L293D integrated circuit to control speed and direction. This is the manufacturer's specification table for the ...
user avatar
  • 133
2 votes
2 answers
83 views

Supplying power to a DC motor that is often held in a stalled state

I have built a force feedback rudder pedal unit (for a flight simulator) using a DC motor. It's a small size 775 24v motor. I am currently using a PWM to run it via a L298N motor controller. As the ...
user avatar
  • 31
1 vote
0 answers
29 views

Possible to rapidly oscillate brushless motor? Thinking of either running it blind or using a sensored motor - regular BLHeli BEMF modes fail

I'm trying to get a brushless motor to rapidly reverse directions thousands of times a second - I don't know how feasible this is. I tried a simple setup with a Raspberry Pi and a BLHeli ESC, tweaked ...
user avatar
  • 11
1 vote
0 answers
34 views

Modelling of 6xPWM for BLDC

I'm looking to model 6xPWM signals to control a BLDC in Matlab/Simulink. My idea is to utilise the additional "dead-time" that you get with 6xPWM to hopefully better control the motor. ...
user avatar
0 votes
1 answer
48 views

Why is one of my MCU (Bluepill) digital pins broken/not working?

Sorry for the noob question. I'm working on an ESC circuit, first I want to work on a very simple ESC circuit without Back-EMF detection like in this video https://www.youtube.com/watch?v=kAaknXe_JSk&...
user avatar
0 votes
1 answer
51 views

Analog control of a brushless motor

I want to control a brushless motor via a potentiometer (voltage range from 0 to 12v), with a dedicated ESC but without an external arduino/stm32/esp32 board There any ESC just built that I can use Or ...
user avatar
  • 11
0 votes
0 answers
39 views

Any way to use brushless ESCs to drive 4 wire bipolar stepper motor?

I have some brushless ESCs, Arduino, and Raspberry Pi lying around, and I'm wondering if there's some way to use this combination to drive a 4 wire bipolar stepper motor.
user avatar
  • 11
0 votes
0 answers
29 views

Nano and 3.3V Pro Mini Moves Servo Differently

I have a servo which ı want to sweep from 0 to 180 degrees with 25ms delays. The servo is making a door move linearly. Because of that, I can observe how much did the servo actually turn. When I use ...
user avatar
  • 195
1 vote
0 answers
32 views

Selecting a Gate driver for IGBT

I have trouble choosing an IGBT gate driver for PMSM motor control application. Can someone help me with the procedure? I went through few papers and I'm stuck with finding the external and internal ...
user avatar
1 vote
0 answers
84 views

Low-side current sensing for FOC (synchronisation)

I am working on the implementation of an FOC controller for a BLDC motor and I am confused about the synchronisation I should perform between ADCs and PWM. The setup implements 3 leg low-side ...
user avatar
0 votes
0 answers
48 views

Which ESC do I need?

I would like to know how to calculate the current rating for my electronic speed control (ESC.) I want to use a lithium ion battery (Absima Power Tank Lipo 11.1V-60C 6200mAh HC (XT90-Plug)) and ...
user avatar
0 votes
2 answers
150 views

What's wrong with this BJT ESC?

I'm trying to drive a small BLDC motor, and I've come up with a design, built it, simulated it, but it doesn't seem to be working, either in the sim or on the protoboard. Usually I see P-type ...
user avatar
0 votes
1 answer
87 views

How to power a DC motor using the output of a driver IC

I am a hobbyist new to electronics, trying to build a water level indicator (and controller) for my water tank. I built a circuit (like the image below) which uses an ULN2003 IC to turn on the LEDs ...
user avatar
0 votes
0 answers
100 views

Raspberry Pi with DRV8825 and Nema 23 bipolar has holding torque no movement

First Raspberry Pi and stepper experience. I have got a temperature probe working with Pi. I am now working on Nema 23 and DRV8825 driver. I followed https://www.rototron.info/raspberry-pi-stepper-...
user avatar
1 vote
0 answers
139 views

How to make a controller for a universal washing machine motor?

I found a broken 2000ish Whirlpool washing machine called AWT4085 in a junkyard. I bought it for a school project like 'E Waste can be reused' topic. It was like 10 bucks or so. It had a lot of ...
user avatar
0 votes
3 answers
110 views

Might I use a diode to block current surge from slowing DC motor (instead of using a battery to absorb that current/energy)?

Hi people - I'd like to bounce this off some fellow engineers/gearheads... I've built a turntable system to add to my Shapeoko 3-Axis CNC machine. The idea is to turn the machine into a CNC lathe of ...
user avatar
  • 1
2 votes
1 answer
206 views

TMC2209 why are separate motor and logic voltages needed?

Why do motor drivers require separate motor voltage and logic voltage? I am looking to use a TM2209 stepper motor driver. Below is a schematic of how I intend to power it. I'll also be using a MCU, ...
user avatar
  • 45
-1 votes
1 answer
98 views

Emergency brake BLDC motor [closed]

I am redesigning a flawed safety system for an autonomous robot. The robot will drive alongside humans and roads, thus it needs redundancy. The braking is achieved in two ways: The motor controller ...
user avatar
0 votes
1 answer
138 views

What is the output of an electronic speed controller (ESC)?

The input of a ESC is a PWM signal. Does this signal correspond to a motor speed? If that is the case, if I send a constant 10% duty cycle to the ESC, then will it try to keep the same motor speed ...
user avatar
  • 189
0 votes
1 answer
68 views

Odd step preceding square wave in simple brushed motor driver

I am attempting to build a simple controller for a cordless angle grinder motor. I have constructed a very simple motor controller, but when running it under load the MOSFET keeps dying. The schematic ...
user avatar
  • 123
1 vote
1 answer
71 views

Using a selector switch to change between a 12 V and 20 V battery

I am working on taking a 12 V system and introducing an alternate battery source that is a 20 V battery that is stepped down to 12 V with a RioRand 7-70 V PWM DC Motor Speed Controller Switch. If I ...
user avatar
  • 11

1
2 3 4 5
17