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The smooth switching of double modes fuzzy control

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Abstract

Various multimode controls are more and more widely applied in industry to improve the performance of control systems. Double modes fuzzy control is one of multimode controls, which has two independent and different mode controllers to satisfy different control demands. The smooth switching of different controllers is the key technology in industrial application of multimode modes control. Double modes fuzzy control is used to improve the dynamic and steady-state performances of control systems. This paper focuses on the unsteady problem at switching point of controllers in double modes control system. Three structures of double modes fuzzy control systems are proposed and discussed. The design principles of multimode control are analyzed. Three different switching methods are analyzed and their feasibility is studied. The concept of smooth switching from one controller to another controller is proposed. Especially the smooth switching of fuzzy/PI double modes control is analyzed, and the corresponding fuzzy controller is designed. The simulation of smooth switching at natural switching point of fuzzy/PI double modes control system is carried out in order to prove the superiority of smooth switching at natural switching point. The results of this paper can offer effective reference for other multimode control design.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 50875111) and the Natural Science Foundation of Shandong Province of China (No. Y2006G25).

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Authors and Affiliations

  1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China

    Fang He & Weiming Tong

  2. School of Control Science and Engineering, University of Jinan, Jinan, China

    Shouhua Zhao

  3. School of Mechanical Engineering, University of Jinan, Jinan, China

    Qiang Wang

Authors
  1. Fang He
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  2. Weiming Tong
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  3. Shouhua Zhao
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  4. Qiang Wang
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Correspondence to Fang He.

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He, F., Tong, W., Zhao, S. et al. The smooth switching of double modes fuzzy control. Soft Comput 15, 889–896 (2011). https://doi.org/10.1007/s00500-010-0550-x

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  • DOI: https://doi.org/10.1007/s00500-010-0550-x

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