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I also found excellent software and hardware projects, all open source

2022-07-26 05:28:00 【Uncle wheat】

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Hello everyone , I'm wheat .

Today I recommend an open source brushless motor drive project .

Project address ：https://github.com/vedderb

Project home page

ESC yes Electric Speed Controller Abbreviation , That is, electronic speed controller , Short for electric regulation ; The author is Benjamin Vedder, So called VESC, You may have heard of it , Namely Benjamin electric control .

This project is mainly divided into several parts ,VESC The firmware , Bill of material ,VESC Hardware ,VESC Tool software , It is a very complete software and hardware project , And the supporting software is also excellent .

The project is still very active , Just before I wrote the article 5 Hours , The author also incorporates a push request .

PCB_Front

The overall characteristics of the project ：

Hardware and software are open source ,CPU Sufficient resources , Secondary development is very flexible ;
be based on STM32F4 Micro controller ;
DRV8302 MOSFET Driver / Buck Converter / Shunt amplifier ;
IRFS7530 MOEFET（ other FET Also applicable ）;
DRV8302 The integrated step-down device on the provides 5V1A Power output .
voltage ：8V ~ 60V;
electric current ：240A The peak current may last for about 50A, Depending on PCB Ambient temperature and air circulation ;
From firmware FW 2.3 rise , It realizes the automatic detection of all motor parameters, including sensor and sensorless FOC;
be based on ChibiOS/RT The firmware of ;
PCB Size ：40mm x 60mm;
Current and voltage measurements for all phases ;
Support DC motor ;
Support sensor or sensorless ;
With a large number of configuration parameters GUI
The adaptive PWM Frequency to get the best possible ADC Measured value ;
be based on RPM The phase of is advanced （ Or timing / Magnetic field weakening ）;
In sensorless mode （ Obviously, the same is true in sensor mode ） Good starting torque ;
Duty cycle control 、 Speed control or current control .
Rich motor control interfaces ：PPM The signal （RC servo ）、 simulation 、UART、I2C、USB or CAN Bus ;
Optional PPM Signal output . for example , It is very useful when controlling the remote control car from raspberry pie or Android device .
Adjustable protection
When the current limit is reached , Use the soft backoff strategy while the motor continues to run . If the current becomes too high , The motor will shut down completely ;
RPM Restriction also has a soft backoff strategy ;
Even if the motor speed changes rapidly , Reversing also works perfectly . This is because the magnetic flux is integrated after crossing zero , Instead of adding a delay based on the previous speed .
When the controller is off and the motor rotates , Will track the direction and direction . The duty cycle for obtaining the same speed is also calculated . This is to get a smooth start when the motor has rotated .

VESC The firmware

Project address ：https://github.com/vedderb/bldc

This is an open source motor controller source code , Applicable to DC motor , Brushless DC motor speed regulation , Support square wave drive and FOC drive , The key is to support insensibility FOC.

Firmware homepage

VESC Hardware

Project address ：https://github.com/vedderb/bldc-hardware

This project is based on STM32F4 chip , The following is the hardware schematic diagram of a brushless DC motor controller , interested , You can make your own hardware based on this project .

Schematic diagram

PCB

3D rendering

Tool software

Project address ：https://github.com/vedderb/bldc-tool

This is a base Qt DC motor controller user interface , Used to configure hardware parameters , Control and debug the controller , The details are shown in the following figure ;