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| RST Digital Controller and Its Application in Time Delay System |
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| DOI：10.11981/j.issn.1000-6842.2017.01.45 |
| Key Words:digital controller; time delay system; phase; robustness |
| Author Name | Affiliation | | 李明辉 | 陕西科技大学机电工程学院,陕西西安,710021 | | 宋忠柱* | 陕西科技大学机电工程学院,陕西西安,710021 | | 徐文力 | 陕西科技大学机电工程学院,陕西西安,710021 | | 谭礼斌 | 陕西科技大学机电工程学院,陕西西安,710021 | | 李光辉 | 陕西科技大学机电工程学院,陕西西安,710021 |
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| Abstract: |
| The traditional control strategy does not focus on a problem of the robustness of the control system. The design goal of the controller is still to achieve good tracking performance and regulation performance level, and it is difficult to obtain satisfactory control effect for the time delay system. RST digital controller is a three branches structure controller which can be equivalent to a front predictor and a no delay controller, can solve the phase change of the time delay system, make the system with improved robustness. By simulation of three kinds of controllers of PID controller, PID-Smith controller and RST controller, the results show that the tracking performance and disturbance rejection performance of RST digital controller is the best, and it has strong robustness to the system with parameter uncertainty． |
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