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Motor suddenly turns in the wrong direction

RReic.2
Associate II

‎2025-08-20 1:55 AM

 

[PN]: Customer Board (Very similiar IHM08M1 and STM32G431RB)
[VERSION]: 6.3.1
[TOOL]: Motor Pilot
[DETAILS]: at heavy load step the motor turns suddenly in wrong direction with full speed (see plot below)
[EXPECTED BEHAVIOR]: stable speed or motor stops with speed feedback error or over current error
[HOW TO REPRODUCE]: Use PMSM Motor with FOC (STO+PLL as primary Sensor, 3shunt),  STM32CubeMX 6.12.1, Target Toolchain ST STM32CubeIDE, Firmware Package Version STM32 FW V1.6.0, Drive Type: LL

 

RReic2_0-1755679708505.png

RReic2_1-1755679993144.png

 

 

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10 REPLIES 10
RReic.2
Associate II
In response to GMA

‎2025-09-03 5:45 AM

Hi @GMA cordic doesn't solve the problem. But at first glance it seems to be less common.

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