Skip Navigation

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2006 E89-A(5):1437-1445; doi:10.1093/ietfec/e89-a.5.1437
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Request Permissions
Google Scholar
Right arrow Articles by LI, F.
Right arrow Articles by YAHAGI, T.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Copyright © 2006 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Systems and Control

Perfect Tracking Control of Nonminimum Phase Systems in Magnetic Levitation System

Feng LI, Jianming LU, Xueqin ZHAO and Takashi YAHAGI

The authors are with the Graduate School of Science and Technology, Chiba University, Chiba-shi, 263-8522 Japan. E-mail: jmlu{at}faculty.chiba-u.jp

In this paper, we study the problem of perfect tracking control of nonminimum phase systems in magnetic levitation system. Generally, perfect tracking control schemes cannot be applied to nonminimum phase plants because of unstable pole-zero cancellations. Although the method of state matching using multirate feedforward control to realize perfect tracking control have been proposed, the oscillation restraint and the feasibility in nonminimum phase system cannot be satisfied at same time. We propose a method using the difference of state variables to generate a smooth desired state variable trajectory in the discrete-time systems. The techniques we proposed are applicable to nonminimum phase discrete-time systems and the oscillations between the sampling points are well restrained. We will show that the structure of the proposed perfect tracking controller is very simple and clear. Finally, computer simulations and experiment results based on magnetic levitation apparatus are presented.

Key Words: tracking control, nonminimum phase system, multirate control

Manuscript received February 7, 2005. Manuscript revised November 30, 2005. Final manuscript received January 20, 2006.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.