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发表于 2014-10-1 16:37:48
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本帖最后由 mandylion2008 于 2014-10-1 16:44 编辑
LS:
问题主要是各个不同电机参数和控制参数的确定,而且是没有基础的玩家都能简单搞定。
确实航模电机电感很小,比如常用的新西达1000KV的电机差不多32uH,但用32KHZ的PWM电机电流波形很好啊!
给你个链接,你自己看就知道了!关键是现在国内公司连人家老外爱好者的水平都不如啊!
http://vimeo.com/56773384
Field Oriented Control (FOC) of a BrushLess DC Motor (BLDC)
Just a short test to compare the new FOC based controller (left in the video) with a MK BL-Ctrl (right). The main features of the new controller are:
* Faster start-up sequence (time until the back-EMF can be measured and the commutation loop is closed)
* Less vibrations (due to the smooth rotation of the magnetic field, the motor rotates silently. the only sound comes from the propeller)
* Much faster response time to new set-point velocities, since the velocity is controlled actively by also breaking the motor.
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