SPIN3201 (STSPIN32F0) three-resistance control board: FOC motor drive schematic/code/debugging documents and other detailed information...

music_586

SPIN3201 (STSPIN32F0) three-resistance control board: FOC motor drive schematic/code/debugging documents and other detailed information... [Copy link]

 

This content is originally created by music_586 , a user on the EEWORLD forum. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

(main chip STSPIN32F0: built-in MCU, DCDC, LDO, op amp, comparator, MOS driver, etc.)
(Low-voltage and high-current three-resistor FOC motor driver)
Download the data in the attachment (360 compression), log in with a computer

music_586

Physical picture of the board

music_586

Empty board illustration

music_586

Motor information and schematic diagram:

music_586

Supplementary instructions for debugging the SPIN3201 three-resistor FOC motor control board

(Main chip: STSPIN32F0 )

1.1 Drawing Description

DCDC to 5V circuit: used to power the Hall sensor or encoder. Not used for sensorless start.

Try to choose a high-frequency DCDC conversion chip. The lower the frequency, the easier it is to introduce some noise.

MOS tube: 60V/80A , low on-resistance TO-252 package MOS tube is selected ;

1.2 Hardware wiring

Current sampling must use differential routing, especially the ground wire (add appropriate filter capacitors to the current sampling circuit);

Try not to cross the PWM output line and the current sampling line;

1.3 Instructions for using the STSPIN32F0 chip in actual projects

The chip's maximum voltage can reach 48V , but the actual project should not exceed 30V , and the limit should not exceed 36V .

music_586

1.4 Wiring Instructions

board

V+: Connect to the positive + of the power supply

V-: Connect to the positive power supply

U: Connect to motor U or A

V: Connect to motor V or B

W: Connect to motor W or C

ST LINK SWD and serial port wiring instructions :

Just connect the wires one by one as shown in the figure above. RST and 3.3V power supply do not need to be connected (the chip already has 3.3V inside ).

music_586

• Software Description

New project board selection

Select the corresponding motor parameters

music_586

Driver interface settings (lower PMW frequency - F0 core has limited computing power )

AD interface settings

If there are no other modifications, generate the project (select the corresponding project file)

Wait for the build project to complete

music_586

In the corresponding storage directory, open the generated MDK project file

music_586

Compile output settings (can speed up compilation time, if you need to track the code, you need to check it)

music_586

Added chip FALSH loading algorithm

Click load to download the program (connect the cables and power first, then turn on the power).

music_586

After downloading the program normally, you can start the motor by pressing the USER1 button on the board ;

Or debug through WOROBENCH's online debugging interface, select the corresponding serial port, and set the baud rate to 9600

music_586

Normal transfer

music_586

2.1 Supplementary instructions for encoder interface generation project settings

Motor parameter interface settings

music_586

Feedback interface startup interface settings, select encoder mode

music_586

Startup settings (the current can be set larger according to actual needs)

music_586

After the project is generated, 6 revolutions can be achieved through WORKBENCH online debugging (but the speed is not stable); if a lower speed is required, the FOC library needs to be modified

music_586

Effect of 600 rpm

music_586

3. Additional instructions for debugging

It is best to determine the motor parameters first (find the motor from the motor manufacturer or test it yourself or use our IHM07 or IHM08 V3 or IHM08 V4 boards, etc. for testing ).

First, you need to confirm whether all the parameters set in ST MC Workbench are consistent with the actual hardware.

Parameters are consistent: such as motor parameters, drive parameters, MCU IO settings, etc.

music_586

If any of these parameters are set incorrectly, the motor may never start correctly.

If necessary, the motor can be run in open loop mode to measure Tnoise and Trise related parameters.

If hardware overcurrent protection occurs immediately after startup, it may be caused by the following reasons: