Discrete-time Adaptive Lqg/ltr Control
نویسنده
چکیده
An adaptive discrete-time LQG control with loop transfer recovery (LTR) is considered. The control problem is analyzed using state-space model and the parameter estimation problem is implemented for corresponding discrete-time model in transfer function form obtained via ZOH. Thus the direct estimation of model parameters is possible by means of standard RLS or ERLS procedure and the adaptive control is implemented through certainty equivalence principle. Computer simulations of third-order systems modeled by a second-order minimum-phase and nonminimum-phase models are given to illustrate the robustness and performance properties of the adaptive LQG/LTR controller, particularly with respect to the weighting parameter ρ. Key–Words: LQG control. Loop transfer recovery. Adaptive control
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