POLE SHIFTING WITH SAMPLED-DATA LQ REGULATORS

Pole shifting design of sampled-data control systems is considered, where the poles of the discretized system are shifted successively. Modal extraction and the linear quadratic optimal regulator for sampled-data systems are employed in each stage of the design method, using both continuous-time and discrete-time representation of the controlled plant and the performance index. While the optimality of the overall closed-loop system cannot be guaranteed, the feedback gain in each stage can be accumulated to obtain the result with desired closed-loop pole location. An illustrative numerical example is given.