具有死区输入时滞大系统的实际跟踪问题  

The Practical Tracking Problem for Large-scale Time-delay Systems with Dead-zone Inputs

作　　者：赵子恒 贾祥磊 周绍生[1] ZHAO Ziheng;JIA Xianglei;ZHOU Shaosheng(School of Automation,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)

机构地区：[1]杭州电子科技大学自动化学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2020年第3期62-67,共6页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(61703132,61673149)。

摘　　要：研究一类具有非对称死区输入且死区参数未知的非线性时滞大系统实际跟踪问题。通过设计一个含有动态高增益的输出补偿器,提出一种鲁棒自适应控制方案。通过构造合适的Lyapunov-Krasovskii泛函,结合动态高增益放缩法和一步反推法,对闭环系统进行稳定性分析,稳定性分析结果表明:在保证闭环系统所有信号有界的同时,设计的控制器的输出能以预先给定的任意小误差跟踪一类有界参考信号。最后,通过数值仿真实例验证了方案的可行性。The practical tracking problem of a class of large-scale nonlinear time-delay systems is considered,which has non-symmetric dead-zone inputs with unknown parameters of dead-zone.An adaptive robust control scheme is developed by designing an output compensator including a dynamic high-gains.By choosing an appropriate Lyapunov-Krasovskii functional,stability analysis of the closed-loop system is proceeded with the aid of dynamic high-gain scaling approach and one-step Backstepping method,which shows that the proposed controller guarantees that all closed-loop signal is bounded while the output of system tracks a broad class of bounded reference trajectories by arbitrarily small error prescribed previously.Finally,a numerical example is given to illustrate controller effectiveness.

关 键 词：大系统 死区输入 输出反馈 实际跟踪 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]