CONTROLLER DESIGN FOR PARAMETER SENSITIVITY REDUCTION IN LINEAR REGULATORS.
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abstract
The problem of parameter sensitivity reduction in linear regulators is considered. It is shown that the minimization of a modified performance index that includes a quadratic term of trajectory sensitivity (state or output or control) subject to the augmented sensitivity system dynamics causes reduction not only in trajectory sensitivity(state or output or control) but also in cost sensitivity. By including quadratic terms of both output (state) sensitivity and control sensitivity, the approaches of trajectory sensitivity reduction and cost sensitivity reduction are united into one framework. A control design method, based on the linear optimal control formulation, is presented and improvements of the proposed method are established.
