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No load current vibration in Torque Control when I use KMS

Question asked by Banson Dou on May 1, 2018
Latest reply on May 1, 2018 by Adam Reynolds

I have 2 question about Cureent control of KMS as below:

1. When I test torque control with KMS (no load condition and bare shaft). I find Q-Aixs and D-Aixs current has a big vibration as the picture.

current control (no load)

2. I define Q-Aixs current is 0.20 A in torque control (as the below picture) . but in the above picture, Q-Aixs current reference is 0, and D-Aixs current reference is 0.17A. Why?

Torque Control