介绍了无刷直流电动机的控制原理，给出了系统设计的整体方案，并详述了硬件电路和软件程序设计。
In this paper, we introduced the control theory of brushless DC motor, and proposed the design scheme, software method and hardware electric circuit for whole system.
有杆泵往复抽油方式常采用机、杆、泵优化的方法来提高系统的整体效率，但易忽略电动机与其他设备的合理匹配。
Rod pumping oil recovery system is applied widely, the optimal method was usually used to enhance the efficiency, but it is easy to ignore that the electromotor matches other fixtures rationally.
能提供一种逆变器一体型的电动压缩机，对于电动机驱动电路等树脂覆盖部的构造而言，能大幅度减少填充树脂量，实现压缩机整体的轻量化、成本下降。
In the structure of a resin coating section such as the motor drive circuit, the amount of resin placed is significantly reduced and the entire compressor is reduced in weight and cost.
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