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Improved Linear Active Disturbance Rejection Control for Lever-Type Electric Erection System with Varying Loads and Low-Resolution Encoder

Author

Listed:
  • Hailong Niu
  • Qinhe Gao
  • Zhihao Liu
  • Shengjin Tang
  • Wenliang Guan

Abstract

The lever-type electric erection system is a novel kind of erection system and the experimental platform in this paper operates with varying loads and low-resolution encoder. For high accuracy trajectory tracking, linear active disturbance rejection control (LADRC) is introduced. An approximate model, consisting of the servo system configured at velocity control mode and the lever-type erection mechanism, is built by means of system identification and curve fitting. Reduced-order LADRC based on the further simplified model is proposed to improve tracking accuracy and robustness. As comparisons, traditional LADRC and PID with high-gain tracking differentiator (HGTD) are designed. Simulation and experimental results indicate that reduced-order LADRC can realize higher trajectory tracking accuracy with low-resolution encoder and has better robustness to variation in erection loads, compared with traditional LADRC and PID with HGTD.

Suggested Citation

  • Hailong Niu & Qinhe Gao & Zhihao Liu & Shengjin Tang & Wenliang Guan, 2019. "Improved Linear Active Disturbance Rejection Control for Lever-Type Electric Erection System with Varying Loads and Low-Resolution Encoder," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-13, January.
    • Handle: RePEc:hin:jnlmpe:9867467
    DOI: 10.1155/2019/9867467
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