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RESEARCH PAPERS

Zero Phase Error Tracking Controllers With Optimal Gain Characteristics

[+] Author and Article Information
Y. Funahashi, M. Yamada

Department of Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466, Japan

J. Dyn. Sys., Meas., Control 115(3), 311-318 (Sep 01, 1993) (8 pages) doi:10.1115/1.2899104 History: Received October 30, 1991; Revised August 04, 1992; Online March 17, 2008

Abstract

Recently, a digital feedforward controller, called a Zero Phase Error Tracking Controller (ZPETC), has been proposed. In this controller, the overall frequency response between the desired output and the controlled output exhibits zero phase shift for all frequencies by using a few steps of the future desired output data. In this paper, two extensions of ZPETC’s are proposed: a ZPETC with deadbeat tracking performance and an L2 -Optimal ZPETC. These ZPETC’s can provide the overall control system with not only the above phase property but also the excellent tracking performance for a desired output and the superior gain property, respectively. Moreover, a ZPETC with both the excellent tracking performance for a step-type and ramp-type desired output and the superior gain property, called an L2 -Optimal ZPETC with deadbeat tracking performance, is presented.

Copyright © 1993 by The American Society of Mechanical Engineers
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