Multirate digital redesign of continuous time controllers based on closed-loop performance

Author

Gu, Yuping ; Tomizuka, Masayoshi

Author_Institution

Dept. of Mech. Eng., California Univ., Berkeley, CA, USA

Volume

2

fYear

2000

fDate

2000

Firstpage

1149

Abstract

Presents a multirate H_∞ optimal digital redesign of continuous time controllers. It focuses on the performance of the closed loop system under digital control. The resulting approximation criterion is a measure for stability of the control system. The discrete time controller is obtained through minimization of this criterion, which can be performed with standard software used for H_∞ controller design. A hard disk drive servo example is given to show the proposed digital redesign method

Keywords

H^∞ control; closed loop systems; continuous time systems; digital control; disc drives; discrete time systems; hard discs; servomechanisms; transfer functions; approximation criterion; closed-loop performance; continuous time controllers; digital control; discrete time controller; hard disk drive servo; multirate H_∞ optimal digital redesign; Closed loop systems; Control systems; Digital control; Discrete time systems; Open loop systems; Optimal control; Sampling methods; Software standards; Stability; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2000. Proceedings of the 2000

Conference_Location

Chicago, IL

ISSN

0743-1619

Print_ISBN

0-7803-5519-9

Type

conf

DOI

10.1109/ACC.2000.876680

Filename

876680