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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Motor speed controller for a 12 V motor using NPN transistor is too narrow in the input voltage
The current circuit:
The voltage supplied to the base to get 6 V output is 7.0 V input.
The voltage supplied to the base to get 12 V output is 7.3 V input.
What type of circuit would allow me to ...
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Differential Pair routing for motor shunt current sensing
I am laying out an ESC - VESC design - and I came across a few papers from TI, ST, and ADI talking about running the sense lines from the phase shunt resistors to the amplifiers/CSAs as a differential ...
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Dahlin_Controller ringing and saturation
I have designed a digital controller to control a DC motor. The motor has the following parameters:
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Suggest best books/references to practically implement High frequency injection (HFI) method for PMSM sensorless position/speed estimation? [closed]
I am looking for references with detailed Explanation about implementing High frequenccy injection method to sensorless estimation of position and speed in IPMSMs. I would be great if i get ...
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Open-loop BLDC motor control using SPWM
I am a student who is still very new to developing sensorless FOC software. What I'm trying to do now is to open-loop control a BLDC motor using SPWM (to get theBEMF values required for the close ...
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Sensorless BLDC motor alignment methods
I have been trying to make a FOC for BLDC motor controlling, but I am stuck at the state that before open loop state which single alignment of the motor control. The question and the explanation is ...
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DC control using BJT
I have a DC motor control circuit as follows, but I don't understand its working principle. Can you explain it to me?
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DRV8871 output voltage drop down error identify
I'm building a brush gear motor driver with TI drv8871. No speed adjustment needed, only forward/reverse is wanted.
The input voltage is 24V. The motor has a small coil resistance about 2.6 to 3.0 Ohm,...
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Controlling several gear motors with encoders from one Arduino
I am working on a project making a robotic hand that uses several (around 20) gear motors with encoders. I'm using this dual motor driver to drive the motors. The motors are paired into ten sets of ...
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What Li-po battery do I need to power an ESC30A and a 2200 Kᵥ brushless motor?
How can I calculate the current and voltage needed to find the right battery specs? If I have four brushless motors, would I need four batteries, or is there a way to use one (this is for a drone)?
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How do I choose an ESC for my plane motor? How do I set the current?
I made an airplane and I have to choose an ESC for the motor. This motor can operate at values such as 12 V-16 C (current), 8 V-9 C, 12 V-20 C, and 8 V-12 C.
I want to run it at 8 V-12 C. Should I ...
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AC Motor Speed Control [migrated]
I have this old 1/3 HP AC Motor attached to a furnace fan that I want to control the speed of. I want to slow it down. I have done a lot of research, but I am not an electronics engineer so I get ...
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Measuring Motor Speed in an analog circuit - (no digital components)
I have been searching for several resources on closed-loop analog motor control. Most of them used a tachometer for speed measurement, which makes a lot of sense because the tachometer is analog and ...
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How can I control four 12vdc motors?
I have four of these motors (scroll down to see specs): https://www.aliexpress.us/item/3256801634996956.html?
I want to be able to turn on one motor - then, two - then, three - then, four, running ...
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ESC design layout and noise interference question
I'm laying out an ESC (sorry can't post photos) and I'm trying to squash any noise on the board. I unfortunately have limited space which requires me to run LV signal traces from my current sense ...
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BLDC high-side MOSFET switching - bootstrap confusion
I'm designing a motor driver and I have had too many MOSFET explosions lately.
Following the typical application guide on ROHMs data sheet, I am confused on whether I need to actually bootstrap the ...
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How do I find BLDC motor and controller ratings?
I have recently purchased a 24 volt brushless DC motor set (underwater thruster) along with its controller. Here is the link to the product.
The description says it's 1000 watt but when I tested, it ...
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How to prevent a short-circuit (not shoot-through) with this half H-bridge?
I have two of these common nMOSFET trigger modules:
The schematic is essentially this (D4184 FETs replaced with similar logic-level FET as Multisim doesn't have the D4184/AOD4184):
With these two ...
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Unusual problem in the motor starter (motor controller)
I am facing problem with a direct motor controller (motor FLA = 10.2 A), the motor starter means are: contactor (Schneider LC1E1210M5), circuit overload protection (hager AFP66H) and motor overload ...
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Why are my transistors failing?
I'm trying to make this supposedly simple motor controller.
Here's a brief history of past events, though I'm not sure they're related to what I'm facing now.
I've built the schematic half on ...
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ODrive mounting connectors
I have to connect motor voltage wires to an ODrive motor controller. I can't find 3-pin mounting connectors to solder to the controller that fit the configuration. Does anyone know what they are ...
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Fixing runaway sewing machine - blown transistor?
Disclaimer: I know very little about electronics, but I'm willing to learn as I go. My experience consists of playing with Arduinos and fixing a lamp by soldering a replacement switch. Please be ...
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Methods of calculating the turns of a DC electric motor
The motor shown in the picture will be used as a pump, its main task will be
to move the piston forward and backward. The result of its operation should be to push the air to a certain
value. ...
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How can I detect the source of current in this circuit
I have designed this inline motor soft starter circuit:
The input is switched externally. When it's turned on, the MCU powers up and produces a ramping PWM output which gradually energizes the motor.
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Controlling sewing machine motor speed with input from a pressure transducer
I would like to control the speed of a sewing machine with the output from a pressure transducer. The sewing machine motor is 230VAC (50Hz) universal motor. I am going to usean MPS20N0040D-D ...
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Does controller PWM frequency need to match ESC PWM frequency?
I am working on a project now where I have encountered a new class of hardware called ESC (electronic speed controller). I am looking at this ESC now: https://www.amainhobbies.com/hobbywing-quicrun-...
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What type of motor is in my 110 V, 9 A, variable-speed drill press? It is 60 years old
It quit working. It has AC power going to a small circuit board (which has a small transformer on it), but no power coming out to the motor. It has 2 brushes and a commutator.
I was thinking the ...
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Circuit review - 12 VDC motor speed controller (555 based)
I thought I'd post this, its a project I made for fun. I didn't order the boards yet, but I spent a decent amount of time trying to make sure this will work.
It's based on the MAX14871 motor driver ...
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AC motor speed control circuit
I connected a circuit found on the internet:
Results:
When the AC motor is connected to the closed circuit, it did turn on, but the speed of the motor keeps increasing on its own without turning off, ...
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Current Sensing Trace Routing
I'm developing a motor control board (sensorless FOC). I have a question about the differential pair traces, they are very long (the longest is about 80 mm) and crosses several gate lines. How bad is ...
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Using a Zener diode MOSFET gate voltage control circuit
I have a little problem with my simple project.
I want to control a 24V / 4A blower motor.
It works okay, but the MOSFET gets too hot.
I used a Zener diode to make the gate voltage above 12V, but it ...
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Hooking up a BLDC motor
Toggle Switch Connections
I want a welding turntable able to turn 500 pound chunks of metal with room to spare. The vertical load with the table horizontal is no problem, it's when I went horizontal ...
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DC motor speed selector switch
I would like to have a switch to select the operation mode of the DC motor (half speed / full speed). The DC motor is 12V 1000W.
Is there a more simple way than using a speed controller (h-bridge)?
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Control multiple DC motors with single PWM from Arduino Uno
I don't have much knowledge of electronics, so my question might be vague. Please point out my mistakes in as simple terms as possible.
I am working on a project in which I have to control multiple DC ...
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DSHOT receiver implementation on STM32F3
I'm writing some code to implement the DSHOT protocol which is used to control Electronic Speed Controls (ESCs) that drive brushless DC motors. I'm using the ST Micro Nucleo32 F303K8 dev board for ...
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Can I use a capacitor to smooth voltage if I directly couple a DC motor to a battery?
I play around with motor scooters I find on the street. I fix them and turn them into golf carts. These run 24 VDC motors of 250 W, 350 W, and some maybe higher.
The controllers use PWM to control the ...
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Will there be different number of zero crossings for driving a 3 phase multipole bldc (motor) vs it being driven (generator)?
Background
I'm working on creating circuits and code to drive 6 step bldc switching logic in a Teensy 4.0 microcontroller. I have previously got this working with an Arduino Uno. I've tried with the ...
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Best way to control multiple stepper motors (6 of them)
I have a small K-cup filling/sealing machine mechanically complete, now I need to control it.
I have installed (1) nema 23 stepper motor to rotate an attached disk that has a hole for 4 empty k-cups, ...
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Code-Free FOC BLDC Controller Circuit Design Help - AMT49406
My team and I are are in need of designing our own BLDC motor controller and need some help with the circuit design. We want to stick with an FOC setup and avoid a sensor solution as those can be far ...
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Is there a large difference between full-step and half-step stepper motors' torque at very low speeds?
I'm using a NEMA 23 for a solar tracker, which means my mechanism will move a single step every 5~10 minutes, and the step angle is 1.8 degrees which I need to bring down to 0.01 degrees.
Now I need ...
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3-Phase BLDC Motor Brake
I want to be able to stop my motor instantly. When I am doing that with a single-phase motor, I just pull the phase to the ground and the motor instantly stops. Am I supposed to do the same with 3-...
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Do I need to insulate the case of an electrolytic capacitor from ground? [duplicate]
I'm designing a motor controller, and I'm trying to understand if I need to add insulation between the case of the bulk input capacitors and the grounded aluminum heatsink. I know that relying on the ...
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Is this design of a motor controller valid?
I am trying to design a compact robotic actuator. My main focus with this project is to reduce the amount of external wiring needed to do with robots. With that in mind, I have thought of the ...
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How do BLDC electronic speed controllers prevent arcing by motor inductance
I've learned that an electric speed controller switches battery voltage on and off on each phase to drive a BLDC motor and uses PWM to control speed. Then I have some confusion.
The coils inside a ...
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Brushed DC motor drive reverse-engineering
I have a mains powered brushed DC motor drive capable of 800-1000W (allegedly). I am using it to power a threadmill motor, for power tool application.
The drive is quite simple and I worked out the ...
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Making 0.6 V DC from 12 V DC battery power for BLDC motor controller
I am going to operate a BLDC motor with 12 V battery power. I purchased motor including controller. The controller board needs low level 0.6 V DC to run the motor. How can I make it with lower cost? ...
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In modelling a motor-generator setup, is it necessary to do state space analysis on the coupled shaft?
I am developing a control system for a motor-generator setup. It is a Permanent Magnet DC motor coupled with a generator. First I have to model the setup and design a suitable controller with speed as ...
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What might it mean if all the voltage is dropping over this resistor?
I'm trying to repair a record player, here's the schematic for what I'm looking at:
https://elektrotanya.com/PREVIEWS/63463243/23432455/pioneer/pioneer_pl-4_sch.pdf_1.png
The problem is that the motor ...
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FOC RPM control strange behaviour
so we have been struggling with a particular issue on our Motor controllers. Before i explain the issue in detail with pictures. Let me setup the context of the hardware we are using.
Motor controller:...
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Why does IR2110 IC keep shorting in motor control circuit?
I have been stuck on this problem for a long time. Close to 2.5 months now..... Please someone help a homie out.
Here is my schematic exactly the way I have it wired (I will eventually use an actual ...
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