Industrial application of an H∞ design method for flexible structures

Author

Coustal, P. ; Michelin, J.-M.

Author_Institution

Sfim Ind. Ets d´´Asnieres, France

fYear

1993

fDate

13-16 Sep 1993

Firstpage

859

Abstract

This paper presents an industrial application developed by Sfim Industries Ets d´Asnieres to a helicopter sight system stabilization. The H∞ synthesis of robust controller for flexible structures is presented. Penalizing the closed loop regulation function G(1+KG)^-1 allows one to avoid pole cancellations and to damp some flexible modes without increasing the regulator order. This approach is reminiscent of the idea of positivity. The stability margin is ensured by the H∞ standard W3 weighting function which also handles the roll-off behaviour. Experimental results obtained show the efficiency of this approach in the case of sight system flexible structure in comparison with classical PID based regulation

Keywords

aircraft instrumentation; control system synthesis; helicopters; optimal control; stability; H∞ design method; H∞ synthesis; Sfim; closed loop regulation function; flexible structures; helicopter; robust controller; roll-off behaviour; sight system stabilization; stability margin; Automatic control; Azimuth; Control systems; Design methodology; Flexible structures; Helicopters; Mirrors; Sensor systems; Torque; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1993., Second IEEE Conference on

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-1872-2

Type

conf

DOI

10.1109/CCA.1993.348223

Filename

348223