采用FIR数字滤波器的反馈控制系统

The Feed back Control System With FIR Digital Filter

这是一个对周期性目标输入的跟踪控制系统。在分析了用模拟滤波器作为补偿器的不足之后，进而提出用ＦＩＲ数字滤波器取而代之。它能够在较宽的频率范围内对周期性的目标输入实现高精度跟踪，并具有较高的抗干扰能力和较快的收敛速度。

A design method of the follow up control system for periodic input is presented.The analysis shows that there exist some weakness if an analogue filter is taken as a compensator.Therefor a FIR digital filter is designed to replace the analogue filter.It can realize the high precise follow up control for the periodic reference input in the wide frequency range and has the strong ability in the resistance to disturbance and the quick convergent speed.This system also consists of a state feed back constructed by the state variable observer and a compensative link of the controlled object property. [