Generalized Digital Redesign Method for Linear Feedback System Based on N-Delay Control
نویسندگان
چکیده
A new digital redesign method is proposed for feedback control systems, by which the states in the continuoustime system are completely reserved in the redesigned sampleddata system. The features of the proposed method are: 1) the N-delay control is employed, and the lth plant input is changed Nl times during one sampling period; 2) the states of the redesigned sampled-data system completely match those of the original continuous-time closed-loop system at every sampling period; and 3) the proposed redesign method can be applicable for a static state-feedback and/or a dynamic controller. An illustrative example of position control using a dc servo motor is presented. The advantages of the proposed redesign approach are demonstrated both in the time and frequency domains.
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