Abstract

A μ analysis and μ synthesis method for nonlinear robust control systems was presented. The nonlinear robust control problem using μ method was described. By means of the nonlinear state feedback and state coordinates transformation, many uncertain nonlinear systems can be transformed as a linear fractional transformation (LFT) on the generalized plant and the uncertainty. Based on the LFT, a linear robust controller can be obtained by the D-K iteration and then a corresponding nonlinear robust control law is constructed. An example was given in the paper.

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