力学系与湍流国家重点实验学术报告 10.26 （报告人 Professor Xinghuo Yu）
发布时间: 2009-10-21 09:50:00
SEMINAR SERIES
北京大学工学院 
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力学与空天技术系
湍流与复杂系统国家重点实验室
2009--2010秋季学期学术报告会
报告题目：Discretization Behaviors in Sliding Mode Control
报告人姓名 Professor Xinghuo Yu
RMIT University, Australia
主持人: 段志生 教授
时间: 10月26日(周一) 上午10:00 -11:00
地点: 北京大学力学楼四楼434大教室
摘要：
Sliding mode control (SMC) is a discontinuous control, aiming to create the so-called sliding mode by changing control structures. An infinite switching frequency is usually required to maintain an ideal sliding mode. SMC has been extensively studied over the last sixty years due to its simplicity and robustness. It is well known that when SMC is implemented digitally, phenomena such as chattering and chaos may occur due to limited sampling rate for discretization.
In this talk, we will explore discretization behaviors in SMC systems and evaluate the disrectization effect on SMC. We will show that under certain conditions asymptotical stability of the discretized SMC systems can be guaranteed and upper bounds of the eventually convergent system states can be analytically computed. We will also show various periodic and pseudo-periodic trajectory patterns and their intrinsic properties using the symbolic dynamics approach.
简历：
Xinghuo Yu (余星火) received BSc and MSc degrees from University of Science and Technology of China, Hefei China, in 1982 and 1984, and PhD degree from South-East University, Nanjing China in 1988, respectively. He is now with RMIT University (Royal Melbourne Institute of Technology), Melbourne Australia, where he is the Director of RMIT Platform Technologies Research Institute. Prof Yu’s research interests include variable structure and nonlinear control, complex and intelligent systems and applications. He has published over 350 refereed papers in technical journals, books and conference proceedings.
Prof Yu has served/is serving as an Associate Editor of IEEE Transactions on Circuits and Systems Part I (2001-2004), IEEE Transactions on Industrial Informatics (2005-2008), IEEE Transactions on Industrial Electronics (2007-Present) and several other scholarly journals. He received the 1995 Central Queensland University (Australia) Vice Chancellor's Award for Research, and was made Emeritus Professor of Central Queensland University in 2002 for his long term contributions.
Prof Yu is an IEEE Fellow, a Fellow of Institution of Engineers Australia (IEAust), and a Chang Jiang Scholar Endowed Chair Professor (长江学者讲座教授).
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