Ph.D. Dissertation Defense

Bumpless Transfer and Fading Memory for Adaptive Switching ControlShin-Young Cheong
Ming Hsieh Department of Electrical Engineering
University of Southern CaliforniaAbstract:
Cheong's Ph.D. dissertation mainly focuses on implementation techniques for adaptive switching control. Adaptive switching control has a possibility to generate bad transients in controller output which can be reduced using various bumpless transfer techniques. A new bumpless transfer method is developed based on slow-fast controller decomposition. The method is especially well-suited to situations in which the plant model is poor or yet to be identified, as may be the case in adaptive switching control.
A new cost function with fading memory and a finite-duration time-window is introduced in order to reduce the effect of old data in unfalsified adaptive control applications where the plant varies slowly or infrequently with time. The effectiveness of the approach is demonstrated via a simple simulation. The result demonstrates that time-windowed/fading-memory cost function for unfalsified control is useful for adaptive control system with
time-varying plants, even when the plant fails to satisfy the usual 'feasibility' requirement of unfalsified control that it must be stabilizable by one of the candidate controllers to satisfy the usual 'feasibility' requirement of unfalsified control that it must be stabilizable by one of the candidate controllers.Biography: Shin-Young Cheong received B.S. degree in Electrical Engineering from Hanyang University,Seoul, Korea, in 2003. He received M.S. degree in 2005 and continued to study for Ph.D. degree in EE at USC.
He is currently studying adaptive switching control and his research interests are control theories including adaptive control, robust control, and optimization in feedback control system.

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 203

Audiences: Everyone Is Invited

Contact: Shane Goodoff