目前，国外飞行器在电动舵机(electrom echanical actua-tor,EMA)中已开始使用稀土永磁(REPM)无刷直流电动机(BLDCM)作为执行元件，以取代传统的普通有刷直流电动机[1.2]。
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REPM-BLDCM 稀土永磁无刷直流电机
The magnetic field of a low-inertia REPM DC servo motor with ferrite shielding case was calculated by the finite element method.
本文采用有限元法对带铁氧体屏蔽罩的稀土永磁低惯量直流伺服电动机的磁场进行了计算。
The structure of the REPM BLDCM of actuation system for underwater vehicle is introduced while its design is analyzed and calculated in detail.
介绍了水下航行器舵系统中的REPM BLDCM结构，对REPM BLDCM设计进行了详细的分析和计算。
This paper introduces mainly the construction features of REPM DC servomotors with air-core rotors and their manufacturing technology. Meanwhile, it states their application feild.
介绍了稀土永磁空心杯转子直流伺服电动机的结构特点，空心杯电枢的绕制方法及其制造工艺，同时还介绍了这种电机的主要用途及其优点。
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