While Running Motor Starts Jerking.

[Yash Jasnani]

Dear Experts,

I need your help to figure out a problem in my MC configuration. I am using Nucleo-F401RE and a custom motor Driver board similar to STEVAL-IPM20B with 0.01R shunt resistor and opamp used it LM324. The current sense circuit in my custom board is similar to the circuit in schematics of the STEVAL-IPM20B board (the change is instead of 2.1K I have used 2.2K). The motor I have used is JK57BLF02.

1. Sometime motor starts and sometime it doesn't starts.
2. After reaches a certain RPM it starts Jerking.

I have attached the screenshots of the configurations I have made.

I have tested the setup with 6-step algorithm, its working perfect. Facing Jerk issue while implementing FOC algorithm.

Thanks and Regards

Yash

[GMA]

Hello @Yash Jasnani,

Did you use the MC motor profiler to profile motor and Hall sensor?
Using sensor less StoPll on main speed sensor and Hall Sensor on Auxiliary speed sensor that at problematic speed both EL_ANGLE signals are aligned?