一类SISO系统离散非线性反馈内模组合控制  

Discrete composite control with nonlinear feedback and internal model for a class of SISO systems

作　　者：蒋学程[1,2] 彭侠夫[1] 何栋炜[1] 

机构地区：[1]厦门大学信息科学与技术学院,福建厦门361005 [2]闽江学院电子系,福建福州350001

出　　处：《华中科技大学学报（自然科学版）》2011年第11期75-79,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61074004)

摘　　要：以非线性反馈控制器为第二控制器,提出了一种抗饱和离散非线性反馈内模组合控制.采用非线性反馈控制器实现系统无超调,而内模控制器在满足系统鲁棒稳定条件下,设计较小的阻尼率,确保响应快速性和无静差.详细讨论了存在输入受限情况下该组合控制在吸引域内的稳定性,以及降阶输出非线性反馈内模组合控制律在吸引域内的稳定条件.仿真实例表明该新型组合控制方法除了能够无静差跟踪参考输入外,还具有良好的动态性能.Taking a nonlinear feedback control as the second controller,a discrete composite control based on nonlinear feedback and internal model theory was proposed to realize the system′s non-overshoot.Internal model controller can support small damping ratio with no steady state error and rapid response on satisfaction of system robust stability.The stability of the composite control and reduced-order output feedback composite control for linear systems with input saturation were deducted respectively in detail.Finally by means of simulation,it is confirmed that except for no steady state error,the systems have an excellent transient performance.

关 键 词：组合非线性反馈 内模控制 模型失配 稳定性 降价观测器 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]