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Drum Water Level Control Based on Improved ADRC

1
College of Mechanical and Electrical Engineering, Kunming University, Kunming 650214, China
2
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
*
Author to whom correspondence should be addressed.
Algorithms 2019, 12(7), 132; https://doi.org/10.3390/a12070132
Received: 26 May 2019 / Revised: 20 June 2019 / Accepted: 25 June 2019 / Published: 28 June 2019
(This article belongs to the Special Issue The Second Symposium on Machine Intelligence and Data Analytics)
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Abstract

Drum water level systems show strong disturbance, big inertia, large time delay, and non-linearity characteristics. In order to improve the antidisturbance performance and robustness of the traditional active disturbance rejection controller (ADRC), an improved linear active disturbance rejection controller (ILADRC) for drum water level is designed. On the basis of the linear active disturbance rejection controller (LADRC) structure, an identical linear extended state observer (ESO) is added with the same parameters as that of the original one. The estimation error value of the total disturbance is introduced, and the estimation error of the total disturbance is compensated, which can improve the control system’s ability to suppress unknown disturbances, so as to improve the antidisturbance performance and robustness. The antijamming performance and robustness of LADRC and ILADRC for drum water level are simulated and analyzed under the influence of external disturbance and model parameter variation. Results show that the proposed control system ILADRC has shorter settling time, smaller overshot, and strong anti-interference ability and robustness. It has better performance than the LADRC and has certain application value in engineering. View Full-Text
Keywords: ADRC; extended state observer; drum water level ADRC; extended state observer; drum water level
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Pu, C.; Zhu, Y.; Su, J. Drum Water Level Control Based on Improved ADRC. Algorithms 2019, 12, 132.

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