关于举行加拿大康考迪亚大学Waizuddin Ahmed教授学术报告会的通知
报告题目：Advances in active steering system for road vehicles（道路行驶车辆中主动转向系统的改进）
报告人：Dr. Waizuddin Ahmed（考迪亚大学教授）
时间：2013年12月30日上午9:00
地点：19号楼二楼209会议室
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机械与汽车工程学院
2013年12月26日
Abstract：Active steering system for road vehicles are designed to generate and deploy a required angle at the wheels to realize a predetermined target response for a steering input at any forward velocity. For a typical vehicle with conventional steering system, this will demand an increase (correction) in the wheel steer angle as the velocity is increased. A handling maneuver at high speed, however, lead to significant load shift from the inner to the outer wheel, which diminishes the ability of the inner tire to develop lateral force even if the steer angle is increased. This severely limits the performance potentials of active steering system if corrections are provided at both wheels following a fixed steering geometry. Recent studies have proposed active independent steering control where the steering correction at a wheel also considers the tire work load at that wheel and in doing so it ensures that none of tires approach its saturation limit. Simulation results from a 4-wheel vehicle handling model are generated to demonstrate the effectiveness of the active independent steering system for different handling maneuvers. A possible steering mechanism that can be utilized to realize independent control for active steering in a fail-safe manner will also be highlighted.
报告人简介：Dr. Waizuddin Ahmed earned a diploma in Automobile and Road Transport Engineering in 1974 from Willesden College of Technology, London, U.K. Following this, he worked in various capacities for automotive industries in U.K. for three years. He earned his B.Eng in 1980 and Ph.D. in 1986, both in mechanical engineering from Concordia University, Dr. Ahmed joined the Faculty of Engineering and Computer Science as an assistant professor in 1987. Dr. Ahmed teaches courses in applied mechanics and advance courses in the vehicle engineering.
He was instrumental in the development of vehicle engineering program, related laboratories and graduate program at Concordia University. He was a founding member of Concordia Centre for Advance Vehicle Engineering (CONCAVE) that has earned an international reputation. Dr. Ahmed also served as the Director of CONCAVE for two terms. He is active in research in the fields of road and railway vehicle systems and has graduated over 30 masters and doctoral students as well as post-doctoral candidates in the field. Dr. Ahmed has also served as the graduate Program Director for his department at Concordia University for four years ending in 2012. He has published over 110 technical papers in international journals and conference proceedings. He has also written a chapter on road vehicle ride for the encyclopedia of vibrations. His innovative design of an active steering system and its control strategy was awarded a US patent in 2012. Dr. Ahmed has served as a visiting researcher and professor at Clemson University U.S.A; Transport Institute and IPN Graduate School in Mexico; IIT Delhi, India; and IUT, Bangladesh and offered several short courses and keynote lectures on vehicle dynamics. He is serving as a member of Honorary Advisory Board for BUET Journal of Mechanical Engineering since 1995. He was named a Fellow of the American Society of Mechanical Engineers (FASME) in 2012.
