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Design Method of Active Disturbance Rejection Variable Structure Control System

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  • Yun-jie Wu
  • Yue-yang Hua
  • Xiao-dong Liu

Abstract

Based on lines cluster approaching theory and inspired by the traditional exponent reaching law method, a new control method, lines cluster approaching mode control (LCAMC) method, is designed to improve the parameter simplicity and structure optimization of the control system. The design guidelines and mathematical proofs are also given. To further improve the tracking performance and the inhibition of the white noise, connect the active disturbance rejection control (ADRC) method with the LCAMC method and create the extended state observer based lines cluster approaching mode control (ESO-LCAMC) method. Taking traditional servo control system as example, two control schemes are constructed and two kinds of comparison are carried out. Computer simulation results show that LCAMC method, having better tracking performance than the traditional sliding mode control (SMC) system, makes the servo system track command signal quickly and accurately in spite of the persistent equivalent disturbances and ESO-LCAMC method further reduces the tracking error and filters the white noise added on the system states. Simulation results verify the robust property and comprehensive performance of control schemes.

Suggested Citation

  • Yun-jie Wu & Yue-yang Hua & Xiao-dong Liu, 2015. "Design Method of Active Disturbance Rejection Variable Structure Control System," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-9, May.
    • Handle: RePEc:hin:jnlmpe:195720
    DOI: 10.1155/2015/195720
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