A notice about the report delivered by Prof. George T.-C. Chiu, Purdue University, USA

Presenter: Professor George T.-C. Chiu

Mechatronic Systems Research Laboratory

School of Mechanical Engineering

Purdue University

Time：27^th, October, 2010     14:00, Wednesday

Location：conference room on the 4th floor, older building, Machinery & Electronics Research Institute, Zhejiang University

Title and Abstract：

Iterative Feedforward Repetitive Disturbance Rejection with Application to Document Scanners

Abstract:

Repetitive control provides a framework using internal model principle to reject periodic disturbances.  For systems that perform iterative tasks with identical initial condition for each trial, we propose an iterative learning control framework with repetitive disturbance rejection based on quadratic optimal zero phase repetitive control.  Asymptotic stability and error convergence conditions will be summarized for the proposed approach.  The proposed algorithm requires less computation and memory resources that is desirable for embedded implementation.  The proposed approach is designed to be an end-of-line and customer- initiated calibration algorithm.  As an application example, the proposed algorithm was used to reduce the color registration error due to spatially repetitive disturbance in an off-the-shelf flatbed document scanner.  The spatially repetitive disturbance can be attributed to the system dynamics of the stepper motor coupled belt-drive transmission used in the majority of the flatbed document scanners.  Experimental results using embedded scanner electronics shows significant reduction in color registration error over an extended period of use. 

Short Biography of Professor George T.-C. Chiu

George T.-C. Chiu is a Professor in the School of Mechanical Engineering and Electrical and Computer Engineering (by courtesy) at the Purdue University.  He received the B.S. degree in Mechanical Engineering from the National Taiwan University in 1985 and the M.S. and Ph.D. degrees in Mechanical Engineering from the University of California at Berkeley, in 1990 and 1994, respectively.  Before joining Purdue in 1996, he was an R&D engineer at the Hewlett-Packard Company.  His current research interests are mechatronics and dynamic systems and control with application to modeling and control of digital imaging and printing systems, motion and vibration control and perception, human motor control and digital fabrication.  He has authored and co-authored more than 140 journal and refereed conference papers and received the 2010 IEEE Transactions on Control Systems Technology Outstanding Paper Award.  He is currently serving on the Executive Committee of the ASME Dynamic Systems and Control division and the Management Committee of the IEEE/ASME Transactions on Mechatronics. He is an associate editor for the Journal of Electronic Imaging and the IFAC Journal of Control Engineering Practice.  Professor Chiu is a member of IEEE, ASME, and IS&T.

Contact：Professor Ju Bingfeng

Tel：8795-1730