Successive Pole Shifting Using Sampled-data Lq Regulators
نویسندگان
چکیده
Design of sampled-data control systems is considered, where the closed-loop poles of the discretized system are shifted in a successive manner, in order to achieve a desired overall pole allocation. Modal extraction and the linear quadratic optimal regulator for sampled-data systems are employed in each step of the pole shifting operation, using both continuous-time and discrete-time representation of the controlled plant and the performance index to be minimized. Unfortunately, the optimality of the overall closed-loop system cannot be guaranteed, due to repeated conversion between continuous-time and discrete-time systems in the iterative method. However, the performance index in each step can be utilized as a guide for choosing reasonable location of the closed-loop poles from practical point of view. Copyright c © 2005 IFAC
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