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控制理论与应用 2009
Compensated approximate model-control with nonlinear actuator
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Abstract:
Considering the actuator nonlinearity, a compensated approximate model-control(CAMC) strategy for the nonlinear plant is presented. This strategy includes the approximate model-controller and the compensator. The approximate model-controller is designed based on the approximate model which is obtained by linearizing the plant input-output relation and implemented by using support-vector-machine(SVM) modeling. In the compensator structure, a feedback filter is employed for ensuring the system stability and robustness; and an online estimated inverse model is used to compensate the actuator nonlinearity. The stability proof of CAMC is derived analytically. Simulations also show the effective application of CAMC to the excitation control in a power system.