Title :
Control of a sight system flexible structure: A H∞ design
Author :
Michelin, J.-M. ; Coustal, P.
Author_Institution :
SERE Co., Asnieres, France
Abstract :
The basic function of a helicopter-boarded sight system is to stabilize the optonic sensors´ lines of sight. Meeting this functional requirement is increasingly difficult (performance improvement, severe carrier environment, decreasing of size and weight). To solve this problem, the control of sight mechanical flexible structure must be considered. H∞ design has proved to be successful in dealing with the different structural disturbances and constraints. A novel W4 weight is introduced in the H∞ standard formulation to ensure the local positivity of the compensated open-loop plant. This property allows the system to be robust against damping variations encountered on flexible structures
Keywords :
aircraft instrumentation; control system synthesis; helicopters; image sensors; optimal control; stability; H∞ design; W4 weight; compensated open-loop plant; control system synthesis; flexible structure control; helicopter boarded sight systems; lines of sight; optimal control; optronic sensors; severe carrier environment; stability; Control systems; Damping; Flexible structures; H infinity control; Helicopters; Mechanical sensors; Military aircraft; Modems; Optical sensors; Robustness; Sensor systems; Vibrations;
Conference_Titel :
Decision and Control, 1991., Proceedings of the 30th IEEE Conference on
Conference_Location :
Brighton
Print_ISBN :
0-7803-0450-0
DOI :
10.1109/CDC.1991.261685
