利用磁粉制动器的励磁电流与制动力矩成线性关系这一特性，设计了闭环张力控制系统。
Utilizing the linearity peculiarity of the exciting current of magnetic powder brake and brake moment, the closed loop control system is designed.
励磁电流与传递力矩、单位转动惯量传递的力矩等成指数关系，与功率损耗成负指数关系。
The exciter current an exponential relationship with transmitted torque, torque by unit moment of inertia and viscous power loss.
分析了同步电动机励磁调节规律，介绍了以TCA785集成移相触发器研制的同步电动机励磁控制器。
This paper analysizes the regulative law of the synchronous motor excitation, and the synchronous motor excitation controller by using TCA785 integrated trigger is presented.
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