From the basic operation principles of the permanent magnet brushless DC motor, this paper analyses the producing reasons of torque pulsation and establishes the mathematical model.
本文从永磁无刷直流电动机的基本工作原理出发，分析了引起转矩脉动的原因并建立无刷直流电动机的动态数学模型。
A basic control method for direct torque control system is introduced, the theory gist of this method is proved. A new method of dead time compensation is also put forward.
介绍了一种直接转矩控制系统的基本控制方法，推导了这种控制方法的理论依据，同时提出了死区补偿的新方法。
Pipe of carbon composites is one of the basic components in composites structure, and torque deformation is one of the basic forms of the structure.
碳纤维复合材料管子是复合材料结构的基本元件，扭转变形是结构常见的基本变形形式。
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