Global tracking stabilisation via sampled-data output feedback for nonlinear systems with unknown measurement sensitivity

AbstractIn engineering practice, sensors commonly have limited sensitivity errors, which are allowed in the design process. This paper uses a sampled-data output feedback control method so that the problem of global tracking stabilisation of a class of nonlinear systems with unknown measurement sensitivity can be solved. A sampled-data output feedback control law and a sampled-data observer are constructed with the help of output feedback domination method. By choosing the domination gain and sampling period in place, the resultant control law can globally stabilise the system even under the influence of unknown measurement sensitivity.Keywords: Global practical trackingsampled-dataoutput feedback controlunknown measurement sensitivity Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationNotes on contributorsYongfeng LiYongfeng Li received a bachelor degree in Electric and Intelligent Building from the Department of Information and Control Engineering, Qingdao University of Technology, Qingdao, China, in 2020. He is currently pursuing a graduation degree with the Department of Information and Control Engineering, Qingdao University of Technology, Qingdao, China. His current research interest includes sampled-data control and adaptive control of nonlinear systems.Pan WangPan Wang received her B.S. degree in the Department of Mathematics and Information Science, Binzhou University in 2010, M.S. degree in Institute of Automation, Qufu Normal University in 2013, and Ph.D. degree in School of Automation, Southeast University in 2019. She has been a lecturer at Qingdao University of Technology since July 2019. Her research interests include sampled-data control, practical control and adaptive control of nonlinear systems, time-delay systems and homogeneous systems, and their applications to electric vehicle systems.Xumei LinXumei Lin received her Ph.D. degree in 2006 from the University of Science and Technology of China. She is a Professor in the School of Information and Control Engineering, Qingdao University of Technology. Her main research interests include testing technology and precision instruments.