The basic equation of brushless wire - wound rotor asynchronous motor has been derived according to structure characteristic of this motor.
根据无刷绕线转子异步电动机的结构特点，导出该电机的基本方程。
The working principle, basic structure and basic equation to the spherical ultrasonic motor are discussed in the paper.
本文对球面型超声波电动机的工作原理、基本结构、基本方程式进行了讨论。
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