文献类型：期刊文献

英文题名：A novel approach to stable zero dynamics of sampled-data models for nonlinear systems in backward triangle sample and hold case

作者：Ou, Minghui Liang, Shan Zeng, Cheng

第一作者：Ou, Minghui

通信作者：Ou, MH[1]

机构：[1]Chongqing Univ, Key Lab Complex Syst Safety & Control, Minist Educ, Chongqing 400044, Peoples R China;[2]Chongqing Univ, Coll Automat, Chongqing 400044, Peoples R China;[3]Guizhou Inst Technol, Sch Sci, Guiyang 550005, Guizhou, Peoples R China

第一机构：Chongqing Univ, Key Lab Complex Syst Safety & Control, Minist Educ, Chongqing 400044, Peoples R China

通信机构：corresponding author), Chongqing Univ, Key Lab Complex Syst Safety & Control, Minist Educ, Chongqing 400044, Peoples R China.

年份：2019

卷号：355

起止页码：47-60

外文期刊名：APPLIED MATHEMATICS AND COMPUTATION

收录：;EI(收录号：20191006599830);Scopus(收录号：2-s2.0-85062430525);WOS:【SCI-EXPANDED(收录号:WOS:000464930500004)】；

基金：The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (grant nos. 61771077, 61763004), the Science and Technology Major Special Project of Guangxi (GKAA17129002) and the Basic Research and Frontier Exploration in Chongqing Science and Technology Commission (cstc2018jcyjAX0815). We are also very grateful to reviews and editors for their helpful comments and suggestions, which will greatly improve the quality of the paper.

语种：英文

外文关键词：Zero dynamics; Stable condition; Sampled-data model; Nonlinear system; Backward triangle sample and hold

摘要：It is well known that a good approximate sampled-data model is very important in sampled-data controller design of nonlinear continuous-time system because the exact sampled-data model of nonlinear continuous-time system is often unavailable. It is also a truth that unstable zero dynamics of sampled-data model greatly limit the control performance of the system. This paper investigates the properties of approximate sampled-data model and its zero dynamics, which generated during the process of discretization with backward triangle sample and hold (BTSH). Further, a more accurate sampled-data model is obtained for nonlinear systems in BTSH case. The zero dynamics form and stable conditions are also derived. Finally, numerical examples are provided to better show the results developed in this paper. (C) 2019 Elsevier Inc. All rights reserved.