Author(s): Song, DA (Song, Dingan); Li, XY (Li, Xinyang); Peng, ZM (Peng, Zhenming)
Source: OPTICAL ENGINEERING  Volume: 55  Issue: 9  Article Number: 094106  DOI: 10.1117/1.OE.55.9.094106  Published: SEP 2016 
Abstract: Design of the controller of an adaptive optical system is very complex because its model is usually with uncertainty. To deal with uncertainty and to improve robust stability, the mixed sensitivity H-infinity control has been introduced to design the controller. In order to testify the validity, wavefront aberration correction capability as well as the robust stability has been compared between the mixed sensitivity H-infinity controller and the classic integral controller. The computer simulation results demonstrate that the system with the mixed sensitivity H-infinity controller, though it cannot guarantee a better correction performance, has greater robust stability than the one with the classic integral controller. That is to say, greater robust stability is achieved at the expense of the correction capability in the system with H-infinity controller. Moreover, the greater the uncertainty is, the more proceeds the mixed sensitivity H-infinity controller will produce. It proves the efficiency of the mixed sensitivity H-infinity controller in dealing with uncertainty in adaptive optics system. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License.
IDS Number: EC6FV
ISSN: 0091-3286
eISSN: 1560-2303