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A new robust stability condition is derived for analyzing the robustness property of discrete-time two-parameter control systems with nonlinear time-varying uncertainties. Based on the concept of excess robustness and the theory of minimum HÂ¿ norm, a feasible and effect design algorithm is presented to synthesize a two-parameter robust controller which ensures that discrete-time two-parameter control systems can achieve the object of optimal robust tracking in the face of nonlinear time-varying uncertainties.
American Control Conference, 1991
Date of Conference: 26-28 June 1991