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TMDSHVMTRINSPIN: Jerk problem at start of the motor

Part Number: TMDSHVMTRINSPIN

Hello team,

We are following the spruhj1 chapter 14 for testing the motor in load condition,

1.Our motor (with full load) having jerk at the initial state, to avoid this problem we go for chapter 14 (14.3 Motor Startup with Full Load), we followed the steps provided in that chapter

But there is no change in the behavior of the motor at the starting stage.

2.can you help me to resolve this issue?

  • That could be the normal appearance and not easy to be resolved if you want to start run the motor with full load. You may tro to enable the Rs recalibration and force angle when start the motor.

    Can you please post a few current waveforms to show this issue?

  • Hi Luo thanks for the reply,

    1.Actually we are getting this problem with no load also, we tried with Estun_EMJ_04APB22_A motor and also with our custom motor, in the ln no  load both motors behavior is same.

    2.Shall i enable both flags in Lab07 (which you mentioned in the above )?

    3.please let me know when can i enable both ? before while loop entrance?

    4.We will provide the  current captures soon .

    5. I would like to mentioned one point , because of this jerk at initial stage (in load) my motor windings got burned, I hope you will resolve our issue with your support 

    Thanks in advance 

  • 1.Actually we are getting this problem with no load also, we tried with Estun_EMJ_04APB22_A motor and also with our custom motor, in the ln no  load both motors behavior is same.

    Please post some measured current waveforms to show this issues.  Retested Estun_EMJ_04APB22_A with lab07 on High Voltage Motor Kit without stall and jerk as you mentioned above, just had a little bit oscillation or reverse at startup with load. 

    2.Shall i enable both flags in Lab07 (which you mentioned in the above )?

    Yes, add the codes below before the main while loop. The force angle is enabled in all labs by default.

    motorVars.flagEnableForceAngle = true;
    motorVars.flagEnableRsRecalc = true;

  • You may try to run the lab05 to identify these two motors again, and use the new identified motor parameters for running the follow-on labs. The default motor parameters may be not exactly right for the motor you have.