基于波德图分析的鲁棒调节器设计

Design of Robust Controller Based on the Bode Diagram Analysis

本文针对用传递函数描述的一类过程,在建模中动态特性存在误差的情况下,提出了一种基于 Bode 图分析鲁棒稳定性和以灵敏度函数指标评价鲁棒性能的调节器设计方法.与 D.L.Laughlin 的方法相比,在用计算机绘制被控过程的不确定性区域时.计算过程得到简比,便于工程应用.通过运行所编制的计算机辅助设计程序表明了新方法的有效性.

In view of the existence of the error for dynamic charateristic in the modelling of the process described by a transfer function,a controller design technique based on the analy- sis of roubust stability with Bode diagram and the evaluation of roubust performance with the magnitude of the sensitivity function is presented in this paper.In comparison with D. L.Laughlin's method,the computation mapping for the uncertainty regions of controlled process is simplified and is therefore available to industrial control.The operation of the designed computer-aided program illustrates the effectiveness of the new method.