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Improved Sliding Mode Output Control of Mine Filling Slurry Concentration Based on Proportional-Integral Observer

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Abstract

The accuracy of slurry concentration is an important guarantee for the quality of mine filling, and enhancing the robustness of the control system is an effective way to improve the accuracy. Based on sliding mode control, this study proposes a novel robust control method for the slurry concentration. Combined mechanism analysis and system response, the controller design model of a slurry preparation process is set up. An improved exponential reaching law with adaptive gain is developed and applied to the design of system controller. Additionally, a proportional-integral observer is used to estimate the state and disturbance of the system, and the disturbance is compensated by the design of the control law. The results demonstrate that the proposed closed-loop system has strong robustness and only measurable output is required for the implementation of the control law. At the same time, the accuracy of slurry concentration is greatly improved.

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Funding

This work was supported by the National Natural Science Foundation of China, grant no. 62063018; the Science and Technology Program of Gansu Province, grant nos. 22JR5RA225 and 21JR7RA204; the Gansu University Industrial Support and Guidance Project, grant no. 2019C-05; the Gansu Industrial Process Advanced Control Key Laboratory Open Fund Project, grant no. 2019KFJJ06.

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Authors and Affiliations

  1. College of Electrical and Information Engineering, Lanzhou University of Technology, 730050, Lanzhou, China

    Weiqiang Tang, Chaoyang Lu & Tianpeng Xu

  2. School of Electrical Engineering and Automation, Xiamen University of Technology, 361024, Xiamen, China

    Haiyan Gao

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  1. Weiqiang Tang
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  2. Chaoyang Lu
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  3. Tianpeng Xu
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Correspondence to Weiqiang Tang.

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Weiqiang Tang, Lu, C., Xu, T. et al. Improved Sliding Mode Output Control of Mine Filling Slurry Concentration Based on Proportional-Integral Observer. Aut. Control Comp. Sci. 57, 552–562 (2023). https://doi.org/10.3103/S014641162306010X

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