Brushless motor driver

write in front

This driver is based on Simple FOC, and the design voltage is 3S lithium battery, which must not exceed 24V. If higher voltage is required, please use capacitors with higher voltage resistance, etc. Since I am not familiar with LCEDA PCB drawing operations, I used Altium Designer 18 for design. The PCB can be downloaded in the attachment.

Project Description

This driver is a branch of the balance cube and is mainly used to drive the momentum wheel, with a serial port or CAN bus reserved for control.

Project properties

• [x] Schematic design

• [x] PCB diagram design

• [x] PCB proofing

• [x] Welding test

• [x] Functional testing

• [x] Open loop test

• [x] Closed loop test~~~~

• [ ] CAN bus control

• • -

Circuit explanation

Buck circuit supports up to 40V. If JW5026 cannot be purchased, it can be replaced by YR4806 with 600MA driving capability. Since the ESP32 used in the control part does not have an external antenna, do not turn on WIFI or Bluetooth in the program, otherwise it will cause charge accumulation and burn the chip. In addition, DRV8313 is counterfeited as DRV8813 on xbao. Be sure not to buy the wrong one.

software

The software part can be developed using Arduino's Simple FOC library, and the encoder is AS5600 IIC communication.

Item link

Motor: Micro 3S-4S gimbal motor yuneec Haoxiang GB2204 brushless motor with magnetic ring for magnetic encoder - Taobao (taobao.com) Driver: DRV8313 DRV8313PWPR DRV8818PWPR TSSOP-28 bridge type - tmall.com Tmall

Precautions

Due to the limited PCB space, try to incorporate a 470uF/50V electrolytic capacitor on the busbar when using it. If a distribution board is used for power supply, try to add peak absorption to the access driver board. The open-loop control of the brushless motor will cause the motor to generate a lot of heat. If you need to test, please run it for a short time and try to keep the motor in closed-loop control mode. At this time, the motor will hardly generate heat. The attachment provides a mat to connect the motor, and it only costs 2 yuan to print at Lichuang. The studs used are M1.4. If you don’t need external link fixation, you only need to buy M1.4 * 12.