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Professor of Engineering, Head of Robotics and Mechatronics
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Zhihong received his B.E. degree from Shanghai Jiaotong University, China, in 1982, the M.Sc degree from Chinese Academy of Sciences in 1987, and the PhD degree from the University of Melbourne, Australia, in 1994. From 1994 to 1996, Zhihong was the Lecturer in the Department of Computer and Communication Engineering at Edith Cowan University, Australia. From 1996 to 2001, he was the Lecturer and then Senior Lecturer in the School of Engineering at The University of Tasmania, Australia. From 2002 to 2007, he was the Associate Professor of Computer Engineering at Nanyang Technological University, Singapore. From 2007 to 2008, he was with Monash University Sunway Campus (Malaysia), where he served as the Professor and Head of Electrical and Computer Systems Engineering and the Chair of the Monash Sunway Campus Research Committee. Zhihong is currently the Professor of Engineering in the Faculty of Science, Engineering and Technology at Swinburne University of Technology, Melbourne, Australia.
Zhihong’s research interests are in nonlinear control, signal processing, robotics, neural networks, engineering optimization and vehicle dynamics & control. He has published more than 250 research papers in refereed international journals and refereed international conferences proceedings, and his research results have widely cited by the researchers from more than 30 different countries. Since 1994, Zhihong has been involved in more than 30 international conferences in control, robotics, signal processing, neural networks and industrial electronics as the General Chair, Program Committee Chair, Track Chair, Session Chair, and the International Advisory Committee and Technical Committees member, including the Chair of the Technical Committee of the third IEEE International Conference on Industrial Electronics and Applications (ICIEA 2008) and the co–Chair of the Program Committee of the Fourth IEEE International Conference on Industrial Electronics and Applications (ICIEA 2009). In addition, Zhihong received the Nanyang Technological University Best Teacher Award in 2004, and the Most Popular Lecturer in the School of Computer Engineering at NTU from 2002 to 2007.
A Further Study on Sliding Mode Observers for Nonlinear Systems
In this talk, the sliding mode observers proposed by Slotine and Utkin are further investigated. It is seen that, in the frame work of the existing sliding mode observers, the terminal sliding patches are found to exist in the conventional sliding patches. For a second order system, after the system dynamics reach the terminal sliding patches, both the position and velocity signals can converge to zero in a finite time. The concept of terminal sliding patch is extended to observer design for high-order systems, where a set of terminal sliding patches are defined , the finite time convergences of the system state estimation errors can then be realised in sequence with a feed forward propagation manner. In addition, the design of the sliding mode observer with a finite state estimation convergence for systems with uncertain dynamics is also explored, to show the finite convergence of state estimation error and robustness against uncertain dynamics. A few simulation results are presented to demonstrate the good performance of the designed sliding mode observers with the terminal sliding patches.