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Practical prescribed-time tracking control for uncertain strict-feedback systems with guaranteed performance under unknown control directions

查看全文 作　　者：Zhou [1]Yang;Yujuan [1]Wang;Frank [2]L.Lewis 高影响力作者 机构地区：[1]School of Automation,Chongqing University,Chongqing,400044,China;[2]The UTA Research Institute,University of Texas at Arlington,Fort Worth,United States of America高影响力机构 出　　处：《Journal of Automation and Intelligence》索引2023年第2卷第2期,共6页高影响力期刊 基　　金：supported in part by the National Key Research and Development Program of China under grant(No.2022YFB4701400/4701401);by the National Natural Science Foundation of China under grant(No.61991400,No.61991403,No.62250710167,No.61860206008,No.61933012,No.62273064,No.62203078);in part by the National Key Research and Development Program of China under grant(No.2021ZD0201300);in part by the Innovation Support Program for International Students Returning to China under grant(No.cx2022016);in part by the Chongqing Medical Scientific Research Project under grant(No.2022DBXM001). 摘　　要：In this paper,we consider the practical prescribed-time performance guaranteed tracking control problem for a class of uncertain strict-feedback systems subject to unknown control direction.Due to the existence of unknown nonlinearities and uncertainties,it is challenging to design a controller that can ensure the stability of closed-loop system within a predetermined finite time while maintaining the specified transient performance.The underlying problem becomes further complex as the control directions are unknown.To deal with the above problems,a special translation function as well as Nussbaum type function are introduced in the prescribed performance control(PPC)framework.Finally,a PPC as well as preset finite time tracking control scheme is designed,and its effectiveness is confirmed by both theoretical analysis and numerical simulation. 关 键 词：Strict-feedback systems Practical prescribed-time control Prescribed performance control Unknown control direction
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