报告题目：Studies of Nonlinear Stochastic Dynamic Systems with Concepts and Methods from Data Science

报告时间：2020年11月23日（星期一） 上午10:00 - 12:00

报告地点：腾讯会议，会议号: 610 601 999

报告人：孙建桥教授、博导（Professor and Chair, Ph.D., P.E., ASME Fellow 美国加州大学默塞德分校）

摘要：We are now in the age of data science when machine learning and artificial intelligence are beginning to reshape the traditional engineering research.  Examples of applications of machine learning, for example, are plenty already and are still coming out in large numbers.  While the research in fault detection and diagnosis has led the way to adopt the concepts of data science, other applications are fast growing including system identification, control design and response analysis of complex nonlinear systems. This talk reports recent applications of the concepts of data science to global analysis of nonlinear dynamic systems and to the solution of Fokker-Planck-Kolmogorov (FPK) equation of nonlinear stochastic dynamic systems.  We outline the steps to conduct global analysis of nonlinear dynamical systems based on the observed responses of the system only without the knowledge of the system.  We use the generalized cell mapping method as a vehicle to achieve the objective of global analysis.  Some interesting examples are presented.  For stochastic systems, we introduce a highly efficient method for finding solutions of the FPK equation of high dimensional nonlinear stochastic dynamic systems.  Both the efficiency and accuracy of the solution have been substantially improved as compared to the studies reported about four years ago.

报告人简介：Dr. Jian-Qiao Sun earned a BS degree in Solid Mechanics from Huazhong University of Science and Technology in Wuhan, China in 1982,a MS and a PhD in Mechanical Engineering from University of California at Berkeley in 1984 and 1988.  He worked for Lord Corporation at their Corporate R&D Center in Cary, North Carolina.  In 1994, Dr. Sun joined the faculty in the department of Mechanical Engineering at the University of Delaware as an Assistant Professor, was promoted to Associate Professor in 1998 and to Professor in 2003. He joined University of California at Merced in 2007, and is currently a professor and chair of the Department of Mechanical Engineering in School of Engineering.  Besides many other editorial experiences, he is the Editor-in-Chief of International Journal of Dynamics and Control published by Springer.

His research interests include stochastic non-linear dynamics and control, cell mapping methods, multi-objective optimization, high-density piezoelectric energy harvesting from highway traffic and data-driven energy management of office building HVAC systems.