无传感器FOC接管达不到所需的转速

嗨吉吉，


我正在玩无传感器转速，发现一个功能没有达到我的预期，或者也许还不知道如何正确使用它。我使用Observer + Cordic方案，并启用了“Rev-up to FOC切换”功能。我将持续时间延长到500毫秒，以便了解库在此期间所做的工作。结果是电机在加速结束后开始快速加速，持续500ms。在那段时间之后，FOC完全接管并且难以达到所需的转速。如果我禁用此功能，那么一切正常，我会在FOC接管的那一刻听到电机中的咔嗒声。所以我的问题在这里：我做错了什么，这个功能是什么，它有可能不起作用吗？

问候
坦率



以下为原文




Hi Gigi,


I was playing with sensorless rev-up and found a feature not doing what I expected, or maybe also not knowing how to use it correctly. I use Observer+Cordic scheme, and enabled the ''Rev-up to FOC switch-over'' feature. I extended the duration to 500ms, in order to understand what the library is doing during that time. The result was that the motor started accelerating quickly after end of rev-up, for these 500ms. After that time, FOC took over completely and declerated hard to the desired rpm. If I disable this feature, then everything works fine, I juse hear a click in the motor in the moment FOC takes over. So my question is here: am I doing something wrong, what is this feature for, is it possible that it does not work?

Regards
Frank