高阶数字控制系统的直接数字设计方法

DIRECT DIGITAL DESION METHODS FOR HIGHER-ORDER DIGITAL CONTROLLED SYSTEM

该设计是利用解析方法直接将高阶闭环离散系统的极点配置成为典型二阶离散系统的极点，从而使高阶系统达到或接近典型二阶系统的性能指标，为此所确定的数字控制器的结构和参数与被控对象的阶次和滞后时间有关，计算机仿真结果有效地证明了本文设计思想的可行性。

The direct digital design for a higher-order digital controlled system provided in this pa-per is based on the direct disposkion of the pole places of a higher-order closed-loop discretsystem to that of the typical second-order system, thus the performance indexes of the high-er-order system can be made to approach that of the typical second-order system. The struc-ture and parameters of the digital controller determined are dependent on the number of or-der and the delay time of the process controlled. The computer simulation results illustratethe feasibility of these methods.