Abstract
In this paper, we consider a vibration isolation control problem in case of narrow-band frequency disturbances are applied to a system. The frequency shaping method by the H_∞ control is helpful for the problem, but can't be locate closed-loop poles in preferable region because poles of weighting functions of the generalized system become undetectable modes. In order to overcome this problem, we use extended H_∞ control combined with the robust stability-degree assignment method. By the method, we can design a controller that provides desirable frequency shaping and preferable closed-loop poles location at once. We conformed performance of the designed controller by experiment.
