闭环脉冲传递函数求取方法研究

Solving Methods Research on Closed-loop Pulse Transfer Function

《自动控制原理》课程本科教学中,闭环传递函数的计算较困难,相关文献提出了求离散闭环传递函数的简易方法,根据采样控制系统采样开关的等效机理,通过实例指出了简易方法的适用条件及其局限性。对于某些结构的采样控制系统必须采用等效开关方法进行推导,该方法具有通用性。

With the undergraduate teaching process of Automatic Control Principle and for the difficulties of calculating closed-loop pulse transfer function, some related literatures offer simple methods for closed-loop transfer function. This article points out the practical conditions of simple methods by concrete instances with the equivalent mechanism of sampling control system and sampling switch. But it can not be popularized with limitation. The method is universal which is adopting equivalent switch in sampling control system.