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Title: Advances in PID, Smith and Deadbeat control
Authors: LU XIANG
Keywords: PID controller, Smith predictor, disturbance rejection, right-half-plane zero, deadbeat control
Issue Date: 29-Apr-2007
Source: LU XIANG (2007-04-29). Advances in PID, Smith and Deadbeat control. ScholarBank@NUS Repository.
Abstract: In this thesis, the following three topics are addressed.(i) PID stabilization and design.PID controller is the dominant choice in process control. Based on the Nyquist theorem, stabilization of five typical unstable time delay processes is investigated. An LMI approach is also presented for PID design with the regional pole placement requirements. (ii) Smith predictor design.The Smith predictor is a good way to control time delay processes. In the thesis, two modified Smith predictor control schemes are proposed for both stable and unstable processes with improved disturbance rejection. Moreover, a Smith like controller design is also given for processes with RHP zeros.(iii) Deadbeat controller design.A polynomial approach is employed to solve the deadbeat tracking problem with hard input constraints. The schemes and results presented in this thesis show that the proposed methods are helpful in improving the performance of industrial control systems.
Appears in Collections:Ph.D Theses (Open)

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