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.
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overlapping Gate pulses(switched reluctance motor)
I am trying to simulate 6/4 SRM motor in Simulink by manually giving the gate pulses to each of the phase(Open loop configuration). The problem is for a duty cycle of 25% the gate pulses don't overlap ...
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Closed Loop Control of BLDC Motor using STM32
I am working on 6-step commutation control of BLDC Motor. For this, I am using the values of Hall Sensors embedded inside the motor as feedback to determine the sector and find a switching sequence ...
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BLDC ESC control pinout/wiring?
I wanted to know if there is some standard pinout/layout of wires for BLDC ESC.
I got the motor and battery connection parts, but I am confused about wires that connect to the reciever.
I am trying to ...
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BLDC ESC with voltage regulator [closed]
Will there be any issues if I add buck-boost voltage regulator between battery and the BLDC motor ESC?
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Building light-following robot with one Arduino and one I2C; Motor.begin command just stops the code from working
This is my code for a light-following robot with an Arduino UNO and an I2C. I'm trying to get it all to work but whenever my Motor.begin command is in the code, ...
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Can't identify this component on a speed control hand tool
This component in orange looks like a rectifier bridge or similar. The potentiometer output is feeding this device and also the Gate of the Triac. I change the triac but speed control is still 100%. ...
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Time delay circuit to reverse the rotation of DC motor when input is high
I am trying to design a circuit to use to control a DC motor according to the output of a capacitive proximity detector.
The circuit should turn ON the DC motor in forward direction when the hand ...
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Making custom electric duct fan out of BLDC motor [closed]
I am trying to make a electric duct fan to replace the one used in these DIY projects link1 link2.
I wanted to use a BLDC motor for this project, but I have never used one before so I am kind of lost.
...
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Why does MD13S JST have an NC pin?
This is about the 4-pin JST connector that links the driver to a microcontroller. It seems that the only important pins are GND, PWM (speed), and DIR (direction). Clearly, when Cytron has designed the ...
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What kind of bridge would reverse DC motor with negative signal
I am not an electrical engineer (aerospace trying to be electrical) and am building a solar tracker. TLDR Goal is to turn on M3 and M4 if signal is positive, and M1 and M2 if signal negative to drive ...
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Can I use just two relays to switch between two 3-phase brushless motors sharing the same driver?
I have a 36V DC 3A (max) 3-phase brushless motor with it's own driver. I have a spare motor and I want to leave both motors connected to the same driver all the time, but only one motor will ever be ...
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Design a ESC using TI's DRV8332 [closed]
I'm actively engaged in the development of an Electronic Speed Controller (ESC) utilizing the DRV8332. I'm seeking clarification on the purpose of the bootstrap pin in this specific application. ...
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Gimbal platform control using a DC motor
I need to make a gimbal stabilization platform for a project. I should be able to control both speed and position (a servo or stepper motor are not suitable for this reason.) There are DC motors with ...
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Controlling Brushless Motor ESC Remotely
I currently have this https://a.co/d/hen7RIb brushless motor ESC from Amazon. I need this to accept a different input than the potentiometer. Right now for remote control we have this ESC connected to ...
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What is the best way to turn off power to motor controller's H-bridge?
I am trying to figure out the best way to implement an emergency shutoff for the H-bridge of a motor controller:
My requirement is to turn off the 48V to the drain of the FET based off a signal which ...
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Motor Driver Project using 555 Timer PWM + 4N25 + 2N7000
I need to build a circuit that controls the speed of DC Motor using external potentiometer, here are the requirements of the project:
Power source: two 12V dc, 450mA power supplies
Motor: R140 Micro ...
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BLDC motor with built in controller and feedback [closed]
I intended to replace some DC motors (which have very unreliable encoders) with something better. I'm looking at BLDC motors with built in controllers. The ones I'm looking for are dimensionally ...
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Capacitors on MOSFET gates in DC motor driver schematic
I'm currently troubleshooting and repairing a faulty DC servo motor drive (Control Techniques Maestro) from a CNC machine (Bridgeport), and discovered some weirdness on the H bridge sheet, where all ...
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What is the right resistance for an esc with a specific gauge rating in bldc motors
I'm trying to build a motor from scratch. A table says 38 AWG (~0.1 mm diameter) is what I assume to be safe operating lower than 22.8 mA "continuously"
Commercial hobby motors on the other ...
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Choosing filter capacitor and inductor for AC to DC rectifier
I am designing a three phase AC to DC rectifier. This DC output will be connected to a 6 IGBT bridge. That IGBT will be controlled using SVPWM technique to control a PMSM motor. What factors do I need ...
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Motor feedback Control
Problem
Ok, so I'm a bit new to EE, but I've gotta run a 12v brushed DC motor run at a fairly consistent rate.
Parts
I've selected Pololu's Jrk G2 for the job. https://www.pololu.com/docs/0J73
And ...
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P-Mosfets to turn on/off a BLDC motor , after the 3 phase inverter Bridge.. Will it work?
I have a brushless sensorless closed-loop motor driver, like the one in the schematics. It uses a constructed virtual neutral point and some resistors to "read" the Back-EMF from the motor.
...
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PMSM Motor Permanent Magnet Flux Linkage
I want to know the Permanent Magnet Flux Linkage of my PMSM motor. I need that to implement a Speed control for my motor. Without this value I cannot do the necessary calculations to make the motor ...
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BLDC motor and torque reverse of rotation
I am designing a hoist style system that uses a BLDC motor, worm gearbox, and sprocket to lift and lower a load.
parameters
motor 400W, 1.3Nm rated, 3000 rpm (only will be used to 2000)
gearbox, 1:40 ...
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Can Hall sensors be placed externally in a small BLDC motor?
I'm trying to build a closed loop control for a BLDC motor with the use of Hall effect sensors. The problem is that I can't find a sensored BLDC motor at all in my country. All the available BLDC ...
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HVAC control & Low Voltage Wiring (24v to 10v) [closed]
I am a GC having some exhaust fan control issues I am hoping someone on here can assist with. My mechanical and electrical contractors are stumped as well.
We have a Vari-green 2 speed controller ...
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Voltage Sag in Li-ion batteries, And how to reduce them
I have 3 18650 Li-ion cells connected in series. Each have a capacity of 2200 mAh and can discharge at 10C. First of all , tell the maximum amps I can draw from them. If I am not wrong, I can draw 22 ...
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Help identifying a SMD chip on a motor controller board
I have a wood chipper that stopped working. It has a universal motor driven by a circuit board with a handful of components. The input is 220VAC (red+blue wires), and the intended output is unknown to ...
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How is soft switching in a PMSM inverter achieved?
Recently I found some papers about PMSM drives that use the regular circuit of 6 e.g. IGBTs to drive a permanent magnet synchronous motor but with a resonant circuit in front of it to achieve zero ...
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Firing TRIAC / AC Light DIMMER module
I am currently testing the AC light dimmer with a blower fan output that has a specification of 220V 0.45A. When the trigger angle is set to 0, why does the output of the AC light dimmer allow a ...
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Motor heating up when I change the speed of the PWM generator in my SVPWM
I am trying to implement a current control loop in my PMSM motor using SVPWM. Currently I am running an open loop control using lookup table values for V and F for changing the PWM duty cycle. Now I ...
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Odd bootstrap design for high-side gate drive
The above circuit utilizes a bootstrap design similar to this next illustration,
Image source: Toshiba - MOSFET Gate Driver Circuit - Application Note
I understand quite well how the capacitor C2 is ...
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BLDC motor don't rotate through the C code flashed nor ST Pilot Motor unless I manually rotate it first
I'm using the nucleo-f302r8 + x-nucleo-ihm08m1 + a BLDC motor.
I'm trying to make the motor spin on the press of a push-button. I made a C code for it but unfortunately, my motor seems stuck when I ...
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Current Feedback on a SVPWM board
So I have developed a SVPWM board and an open loop control to run an AC motor. The board and firmware have been tested and the motor runs perfectly on an open loop control. Now I want to use current ...
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Active Half-Bridge Driver Circuit
Consider the folLowing half bridge circuit:
I'm designing a half-bridge circuit to be controlled by a microcontroller. Ultimately, there will be 3 copies of this circuit for an ESC. I am hoping to ...
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Capacitor equivalent [closed]
I am unable to find a replacement capacitor for my well pump.......that capacitor is labeled
Phillips capacitor 3534B5A0088A330A4
Would someone please direct me to where I can find a cross reference ...
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Troubleshooting a circuit to control motor speed
I'm playing around with an old Crosley cruiser. I know what people say about them (the small suitcase record players) but it's a project. Basically have taken everything out (apart from the record ...
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Linear actuator doesn't move or moves very slowly
I am observing issues with linear actuator not moving and/or moving very slowly at highest speed setting. I am using a DC linear actuator with a speed control unit and rocker switch to extend and ...
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SPI Control of TMC5160-BOB using ESP32-S2 Feather
I am unable to drive a motor with the TMC5160-BOB using SPI commands. Anybody understand why?
Block Diagram:
Arduino C Code:
...
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Maximum output voltage of a basic variable frequency drive circuit
When looking up the basic schematic of a variable frequency drive (VFD), the result is something like the following image:
I am aware that this is a great simplification, but in order to improve my ...
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Help getting a BLDC motor with ESC working with my PS4 Controller
I'm a hobbyist and have been working on building a small ROV. I want to be able to control several DC motors independently so I went down to my local hobby store and they helped me chose a DC motor, ...
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Build a speed controller for 3.7 V brushed DC motor 720 using BD139
I want t build a DIY speed controller using a BD139 transistor. The motor needs to be powered by 3.7 V to operate. In some cases (youtube tutorial,) it can be used for 12 V DC motor. How can I build ...
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Sizing MOSFET VDS to account for Stepper Back EMF
I'm having difficulty conceptualizing how the Back EMF of a motor, stepper in this case, can damage an H-Bridge MOSFET if the Vds aren't sized correctly. My main issue is my understanding of how the ...
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SVPWM lookup table
I tried to control the three-phase BLDC motor in the SVPWM method. I use the lookup table for SVPWM. The below one is from saddle waveform (3rd harmonic rejection) which contains 1/3rd period to zero (...
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Quick PMSM FOC PI controler design
For a Simulink Model I am looking for a quick and easy way to estimate PI-controller parameters for a speed control loop and Id and Iq controler of a PMSM using FOC.
I don't have a real motor just the ...
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What is the purpose of adding capacitance to stepper motor windings?
I am looking at the schematic of the DRV8434SEVM evaluation board for the DRV8483S stepper motor driver and I see they've put these 3.3nF capacitors on the outputs going to the stepper motor coils. I ...
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Is this design to control a BLDC with 1 PWM signal feasible?
I've started designing my own BLDC speed controller for a RC Car. I've been reading this document from Microchip where they use 6 seperate PWM signals from the MCU to drive the MOSFETs which, to me, ...
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Current limiting in a ESC
How is current limited in high-power circuits such as ESCs, considering that they might provide tens of Amperes of current?
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How to explain unexpected output from L293D?
I have configured an L293D IC along with a PIC MCU to control a 9V DC motor via PWM. The schematic is as follows:
simulate this circuit – Schematic created using CircuitLab
For an input 1A = +...
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How to reverse the polarity of a DC brushless hobby motor?
How can I reverse a motor safely that draws about 70 A on 4 s (14.8 V), and additionally how do ESCs (Electronic Speed Controller) that have this capability built into them do it?
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