基于最大灵敏度的分数阶内模控制器设计

摘要

With respect to the complexity of fractional order controller parameters tuning, a scheme of maximum sensitivity based fractional order internal controller is proposed.Firstly, the original model is simplified by using particle swam optimization (PSO) algorithm.Secondly, a fractional order controller is designed according to the principle of the internal model control (IMC) based on the simplified model.The proposed controller has only one adjustable parameter, through which the rapid tuning can be achieved.Finally, the robust tuning of the controller parameter is realized using maximum sensitivity index.Simulation results show that this method has good control quality and robustness.%针对分数阶控制器设计参数整定复杂的问题,提出一种基于最大灵敏度的分数阶内模控制器设计方法.采用粒子群优化算法对原系统模型进行简化处理,根据内模控制原理设计分数阶内模控制器;仅通过一个可调参数,实现分数阶内模控制器的快速整定;通过最大灵敏度指标实现分数阶内模控制器的鲁棒整定.仿真结果表明具有良好的控制品质及克服参数摄动的鲁棒性.