Title :
Industrial application of an H-infinity design method for flexible structures H/sub /spl infin
Author :
Coustal, P. ; Michelin, J.-M.
Author_Institution :
Sfim Ind., Asnieres, France
Abstract :
An industrial application has been developed by Sfim Industries Ets d´Asnieres for helicopter sight system stabilization. H/sub /spl infin synthesis of robust control for flexible structures is presented. Penalizing the closed loop regulation function G(1+GK)/sup -1/ avoids pole cancellations while damping some flexible modes without increasing the regulator order. This approach is reminiscent of the positivity idea. The stability margin is ensured by the H/sub /spl infin standard W/sub 3/ weighting function which also handles the roll-off behavior. Experimental results obtained on the flexible sight system structure confirm the efficiency of this approach.<>
Keywords :
aircraft control; aircraft instrumentation; closed loop systems; damping; helicopters; optimal control; stability; H/sub /spl infin synthesis; closed loop regulation function; damping; flexible modes; flexible structures; helicopter; mirror gyroscope unit; optomechanical device; roll off behavior; sight system stabilization; stability margin; Control system synthesis; Damping; Design methodology; Electrical equipment industry; Flexible structures; H infinity control; Helicopters; Regulators; Robust control; Stability;
Journal_Title :
Control Systems, IEEE
