A two-degree-of-freedom Smith control for improved disturbance rejection
| Authors: | Wang Qing-Guo, National University of Singapore, Singapore
Lu Xiang, National University of Singapore, Singapore
Zhou Hanqin, University of Houston, United States
Lee Tong-heng, National University of Singapore, Singapore |
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| Topic: | 6.1 Chemical Process Control |
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| Session: | Advanced Linear Control |
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| Keywords: | Process control, delay systems, Smith Predictor, disturbance rejection |
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Abstract
A two-degree-of-freedom Smith control scheme is proposed for improved disturbance rejection for stable delay processes. The resulting set-point and disturbance responses can be tuned by twocontrollers separately. A novel disturbance controller design is presented with easy tuning and greatly improved performance. The internal and robust stability issues are discussed. Examples are provided for illustration.
