TMS320F28027F: long delay time between speed reference and speed feedback

Did the ESC work in torque mode or speed close loop mode?

There are several factors will affect the acceleration for speed mode.
1. The speed acceleration, set it by CTRL_setMaxAccel_pu();
2. The Kp and Ki of Speed and Iq PID regulator.

It seems the speed reference was not set to the speed trajectory generator immediately, to check whether had any long time delay to call CTRL_setSpd_ref_krpm(ctrlHandle,gMotorVars.SpeedRef_krpm) and CTRL_updateState(ctrlHandle), both two functions will be used to set speed reference to speed PID.

Dear Yanming,

I met the same results but with SpinTAC-MOVE as a speed profiler. So which functions should I setup to short the delay time?

Cc: Young Hu,
What tool did you use to get the ESC TEST LINE?

Thank you!

Hi Tran Binh Duong,
My customer designed a GUI to get the motor status via UART.

BR,
Young

Thank Young Hu for your reply!

Have your customer resolved this problem yet?

I'm looking forward to hearing about your solution.