摘要
针对一类非线性系统,提出一种基于灰色预测的自适应内模PID双重控制方法.把由系统的输入输出数据得到的灰色预测模型作为系统的内部模型,并在基本的内模控制结构上增加PID控制器,加快了跟踪误差收敛速度,内模控制的性能明显改善.仿真结果表明,该控制方法简单而有效,内模PID双重控制较单一内模控制具有更好的系统性能.
A dual controller strategy with an adaptive internal model in conjunction with grey prediction and PID controller is presented for nonlinear systems. The grey prediction model, which was obtained from input-output data, was employed as the internal model of the system. A PID controller was added to the original IMC structure in order to speed up tracking of error convergence and improve IMC controller performance. Simulation results demonstrate that the proposed control strategy is simpler and more effective, indicating that a dual IMC and PID controller has better performance than a controller with only IMC.
出处
《智能系统学报》
2008年第1期71-76,共6页
CAAI Transactions on Intelligent Systems
基金
山西省自然科学基金资助项目(2007011049)
山西省教育厅科技资助项目(20051311)
关键词
内模控制
PID控制
灰色预测模型
internal model control
grey prediction model
nonlinear system
