一种基于矛盾思想方法的性能指标函数

由给定值阶跃响应过渡过程性能指标中存在的矛盾入手,分析了给定值跟随型控制系统优化的本质,认为其实质上是矛盾对立统一的产物,进而从抓住主要矛盾的观点出发,构造了一种以3个分立的过渡过程曲线特征参数为组成部分的性能指标函数.通过适当的均衡化和归一化变换处理,该性能指标函数在保持主要性能指标平衡性的基础上,加入了最大动态偏差限制、负向波动参数和过渡过程时间参考值,从而在保证稳定性的同时体现了控制要求和实际对象的动态特性,因而具有良好的适应性和针对性.仿真试验结果表明,使用该性能指标函数优化得到的系统具有给定动态偏差范围内快速的阶跃给定值跟随性能,同时具有良好的抗扰动性能和鲁棒性,适合于给定值跟随型控制系统的计算机仿真寻优.

A new performance function based on contradictory idea

Started with the contradictions among the performance specifications of set-value step-response transitional process,the essence of set-value follow-up control system optimization is analyzed;and it is considered the product of unity of opposites of contradictions.A new performance function applied to simulative optimization of set-value follow-up control system is constructed from the point view of grasping the principal contradiction,which is made up of three characteristic parameters of step-response tra...