ADAPTIVE PERFORMANCE ROBUST-CONTROL DESIGN USING ORTHOTOPIC SET MEMBERSHIP IDENTIFICATION FOR LOW-DIMENSIONAL SYSTEMS

The adaptive robust control design problem for low-dimensional systems is addressed in this paper. The proposed scheme consists of an orthot opic set membership identifier, a robust stabilizing controller and a pole placement controller. The identifier provides the minimum (volume -wise) orthotopic region of parameters which is consistent with the da ta and model structure. Based on this orthotope, the robust controller computes the feasible set of stabilizing controller gains. Subsequent ly a pole assignment controller selects a subset from the stabilizing gains in order to place the closed-loop poles deeper inside the unit d isc. Simulation studies are offered to validate the efficiecy of the p roposed method. (C) 1997 by John Wiley & Sons, Ltd.