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控制系统基于二次型指标最优设计时,如何根据系统时域指标确定加权Q阵,是尚未彻底解决的问题。本文提出了以数字仿真为基础确定最佳Q阵的方法,并应用于直流调速系统设计,使系统按时域指标要求,用现代控制理论设计成为可能。同时提出一种简单、准确的调速系统数字仿真方法——信号流图仿真法,妥善地解决了速度调节器饱和问题,编制了通用的计算机辅助设计程序,并在实验中得到验证。
When the control system is based on the optimal design of the quadratic index, how to determine the weighted Q matrix according to the system time domain index is not yet completely solved. In this paper, the method of determining the optimal Q-array based on digital simulation is proposed and applied to the design of DC speed control system, which makes it possible to design the system in time domain. At the same time, a simple and accurate method of digital simulation of speed governing system - signal flow graph simulation method is put forward, and the problem of saturation of speed regulator is properly solved. A general computer aided design program is compiled and verified in the experiment.