Title :
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
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;
Conference_Titel :
American Control Conference, 2000. Proceedings of the 2000
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-5519-9
DOI :
10.1109/ACC.2000.876680
