Title :
Multirate estimation and control under time-varying data sampling with applications to information storage devices
Author :
Phillips, Anthony M. ; Tomizuka, Massayoshi
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
Abstract :
A method for increasing controller performance through improved state estimation for systems with position-limited measurements operating at low velocities is presented. Improvements include updating the estimates and control at each measurement instant (rather than after a fixed sampling time) and the use of a multirate scheme between measurement instants. Performance improvement is demonstrated for position control through simulation of track seeking in an optical disk drive and for velocity control through simulation and experiment for a motor/encoder system
Keywords :
optical disc storage; position control; sampled data systems; state estimation; velocity control; controller performance; information storage devices; motor/encoder system; multirate control; multirate estimation; optical disk drive; position control; position-limited measurements; state estimation; time-varying data sampling; velocity control; Disk drives; Motion control; Observers; Optical control; Optical feedback; Position measurement; Sampling methods; State estimation; Velocity control; Velocity measurement;
Conference_Titel :
American Control Conference, Proceedings of the 1995
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2445-5
DOI :
10.1109/ACC.1995.532713
