https://scholars.lib.ntu.edu.tw/handle/123456789/409699
Title: | Inverse-based design for a modified PID controller | Authors: | Huang H.-P. Lee M.-W. Chen C.-L. |
Keywords: | Dead time;Integrator;Inverse-based;M-PID;Modified smith predictor;Non-minimum phase | Issue Date: | 2000 | Journal Volume: | 31 | Journal Issue: | 3 | Start page/Pages: | 225-236 | Source: | Journal of the Chinese Institute of Chemical Engineers | Abstract: | A modified PID (m-PID) controller design using low order dynamic models is presented. In contrast to the one of Haggland and Astrom (1985), the controller uses model-based parameters. Synthesis of such a controller is by way of an inverse-based approach. By this approach, a pure lead is introduced into a loop to make the system equivalent to a modified Smith predictor (MSP) control system. Tuning rules for this m-PID controller are then derived from this equivalent system. For robustness, gain and phase margins are analyzed. It is found that this proposed m-PID control system has good responses to both set-point and load changes. Tuning rules derived from reduction of this m-PID controller for conventional PID control have also been presented.A modified PID (m-PID) controller design using low order dynamic models is presented. In contrast to the one of Haggland and Astrom (1985), the controller uses model-based parameters. Synthesis of such a controller is by way of an inverse-based approach. By this approach, a pure lead is introduced into a loop to make the system equivalent to a modified Smith predictor (MSP) control system. Tuning rules for this m-PID controller are then derived from this equivalent system. For robustness, gain and phase margins are analyzed. It is found that this proposed m-PID control system has good responses to both set-point and load changes. Tuning rules derived from reduction of this m-PID controller for conventional PID control have also been presented. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409699 | ISSN: | 03681653 |
Appears in Collections: | 化學工程學系 |
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