caa a22 4500 60620654X CHVBK 20210128101012.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00034-014-9855-9 doi (NATIONALLICENCE)springer-10.1007/s00034-014-9855-9 Robust Fault Estimation for Takagi-Sugeno Nonlinear Systems with Time-Varying State Delay [Elektronische Daten] [Chao Sun, FuLi Wang, XiQin He] This paper addresses the problem of robust fault estimation for Takagi-Sugeno (T-S) nonlinear systems with time-varying state delay. Under $$H_{\infty }$$ H ∞ performance constraint, a fuzzy-augmented fault estimation observer (AFEO) design is proposed to enhance the performance of fault estimation for T-S nonlinear state delay models with actuator and sensor faults simultaneously. Based on Lyapunov function and improved free-weighting approach, some less conservative sufficient conditions for the existence of AFEO are given in terms of linear matrix inequalities, and the obtained fault estimates via AFEO can practically better depict the size and shape of the faults. Finally, three illustrative examples are given to illustrate the validity of the proposed design procedures. Springer Science+Business Media New York, 2014 Fault estimation nationallicence T-S fuzzy models nationallicence Time-varying delay nationallicence Linear matrix inequalities (LMI) nationallicence Sun Chao College of Information Science and Engineering, Northeastern University, 110004, Shenyang, China aut Wang FuLi College of Information Science and Engineering, Northeastern University, 110004, Shenyang, China aut He XiQin School of Sciences, University of Science and Technology of Liaoning, 114051, Anshan, China aut Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/2(2015-02-01), 641-661 0278-081X 34:2<641 2015 34 34 https://doi.org/10.1007/s00034-014-9855-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00034-014-9855-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Chao College of Information Science and Engineering, Northeastern University, 110004, Shenyang, China aut NATIONALLICENCE 700 1- Wang FuLi College of Information Science and Engineering, Northeastern University, 110004, Shenyang, China aut NATIONALLICENCE 700 1- He XiQin School of Sciences, University of Science and Technology of Liaoning, 114051, Anshan, China aut NATIONALLICENCE 773 0- Circuits, Systems, and Signal Processing Springer US; http://www.springer-ny.com 34/2(2015-02-01), 641-661 0278-081X 34:2<641 2015 34 34