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Industrial application of an H-infinity design method for flexible structures H/sub /spl infin

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2 Author(s)
P. Coustal ; Sfim Ind., Asnieres, France ; J. M. Michelin

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.<>

Published in:

IEEE Control Systems  (Volume:14 ,  Issue: 4 )