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Original question:

TMS320F28027: motor parameter

TMS320F28027: rotating speed deviation

Yale Li 李耀先
Expert 4660 points

Part Number: TMS320F28027
Other Parts Discussed in Thread: MOTORWARE

E:\ti\motorware\motorware_1_01_00_18\sw\solutions\instaspin_foc\boards\boostxldrv8305_revA\f28x\f2802xF\projects\ccs\proj_lab11a

Based on this routine, after changing the current and voltage multiples according to the hardware, it is found that the rotation speed has a fixed deviation. Why is this?
The command speed is 1.067 times the actual speed, and it cannot increase the speed until 2800rpm. Are there any other limited speeds?

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Thanks & Regards

  • +1
    TI__Guru** 116850 points
    Yale Li 李耀先 said:
    Why is this?
    The command speed is 1.067 times the actual speed, and it cannot increase the speed until 2800rpm. Are there any other limited speeds?

    Not fully understand your questions. 

    What's the test condition? Any measured current waveform? More details help us to understand your question?

    What's the rated voltage, rated speed of the motor? And what's the dc bus voltage?