第十六期
l 2021年12月13日（周一）10:00-11:30 腾讯会议：644 725 938
报告27：
报告题目：Field-based sensing and control methods for thin-walled component machining
报告时间：2021年12月13日（周一）10:00a.m.~11:30a.m.（Beijing Time）
腾讯会议：644 725 938
报告专家：Prof. Kok-Meng Lee
专家单位：Georgia Institute of Technology（乔治亚理工学院）
报告摘要：Monitoring and controlling various aspects of the machine state while the component is being fabricated remain the key limitation to the capabilities of advanced machining processes, particularly for manufacturing thin-walled components made of hard-to-machine materials where continuous deformation and vibration render poor precision and quality in final products. Illustrated in the context of thin-plate turning, this talk introduces a field-based sensing and control method to address several challenging problems commonly encountered in post-process precision machining. Unlike existing control methods based on a lumped-parameter cutting model, a spatially distributed-parameter dynamic model of a rotating thin plate with multiple vibration modes is used to analyze the machining stability with the developed controller. Using a distributed set of non-contact sensors capable of monitoring workpiece vibration in harsh working conditions, the vibration displacement of the plate is reconstructed to capture the dynamic behavior at the cutting point and fed back for chatter suppression during turning.
专家简介：Kok-Meng Lee (kokmeng.lee@me.gatech.edu), received his M.S. and Ph.D. degrees in mechanical engineering from the Massachusetts Institute of Technology in 1982 and 1985, respectively. He has been with the Georgia Institute of Technology since 1985. As a Professor of mechanical engineering, his research interests include dynamic systems/control, actuators/sensors, mechatronics, machine vision, robotics, and intelligent manufacturing. He is also Distinguished Professor with the School of Mechanical Science and Engineering at the Huazhong University of Science and Technology, and Pao Yu-Kong Chair Professor of the Zhejiang University.
Dr. Lee is a Life Fellow of ASME and a Fellow of IEEE. Currently, he is founding Editor-in-Chief (EIC) for Springer International Journal of Intelligent Robotics and Applications, and serves as co-Chair on the Conference Advisory Committee for the IEEE/ASME International Conference on Advanced Intelligent Mechatronics since 1997. He was EIC (2008-2013) for IEEE/ASME Trans. on Mechatronics (TMech), and served on the Executive Committee of ASME Dynamics Systems and Control Division (2013-2107, Chair 2016). Prior to serving as EIC for TMech, he served as its Technical Editor (1995-1999) and guest edited four focused sections. He had also held representative positions within the IEEE Robotics and Automation Society: served as Associate Editor for its Trans. on Automation Science and Engineering (2003-2005), Trans. on Robotics and Automation (1994-1998), and Robotics and Automation Magazine (1994-1996), and as Chair or Co-Chair for numerous international conferences; and founded/chaired Technical Committees on Manufacturing Automation and on Prototyping for Robotics and Automation.
Recognitions of his research contributions include Presidential Young Investigator (PYI) Award, Sigma Xi Junior Faculty Award, International Hall of Fame New Technology Award, Woodruff Faculty Fellow and more recently, ASME Michael J. Rabins Leadership Award. He is also recognized as advisor for more than ten Best Student Paper and Thesis Awards.
