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Soft Computing

, Volume 19, Issue 4, pp 851–858 | Cite as

Design of sliding-mode control based on fuzzy disturbance observer for minimization of switching gain and chattering

  • Hyo-Seok Kang
  • Yongho Lee
  • Chang-Ho Hyun
  • Heejin Lee
  • Mignon Park
Focus

Abstract

In this paper, we propose the sliding mode control (SMC) based on the fuzzy disturbance observer for systems with disturbances to minimize the switching gain and reduce chattering phenomenon. The proposed method exhibits the following two attractive features. First, using the universal approximation and the adjustable parameter of the fuzzy system, the switching gain in proposed control law is only required to be designed greater than the sum of magnitude of the disturbance approximation error and the fuzzy reconstruction. It implies that the proposed controller is less dependent on the range of switching gain to stabilize the system than SMC; thus, the minimization of switching gain can reduce the chattering. Second, the proposed method exhibits much better control performance than the traditional SMC and Nonlinear Disturbance Observer (NDOB)-based SMC, such as reduced chattering and good performance. The stability of the proposed control system is proved using Lyapunov method. To verify the effectiveness of the minimization of switching gain and chattering, we show the performance of the proposed method through some simulations of the inverted pendulum.

Keywords

Fuzzy disturbance observer Sliding mode control Switching gain Chattering reduction Uncertainty External disturbance 

Notes

Acknowledgments

This work was supported by the research grant of the Kongju National University in 2013.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Hyo-Seok Kang
    • 1
  • Yongho Lee
    • 1
  • Chang-Ho Hyun
    • 2
  • Heejin Lee
    • 3
  • Mignon Park
    • 1
  1. 1.School of Electrical and Electronic EngineeringYonsei UniversitySeoulKorea
  2. 2.School of Electrical Electronic and Control EngineeringKongju National UniversityCheonanKorea
  3. 3.Department of Electrical Electronic and Control EngineeringHankyong National UniversityAnseongKorea

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