Adaptive wavelet backstepping control for electro-hydraulic servo systems

Ji Hong Qiao*, Bing Shi, Ya Ping Dai, Hong Yan Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Adaptive an wavelet backstepping control (WARBC) systems is proposed for electro-hydraulic servo systems. Two wavelet neural networks are used to approach the arbitrary model uncertainties of electro-hydraulic servo system, and all their weights are trained online. Novel update and control laws are proposed to guarantee that all the signals in the closed-loop control system are uniformly ultimately bounded (UUB) in a Lyapunov sense. As a result, the aim of electro-hydraulic servo system's tracking control can be achieved. In addition, a robust compensator is designed to improve the tracking performance. Finally, a computer simulation example is presented to illustrate the effectiveness and applicability of the suggested proposal.

Original languageEnglish
Pages (from-to)405-409
Number of pages5
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume28
Issue number5
Publication statusPublished - May 2008

Keywords

  • Adaptive robust control
  • Backstepping control
  • Electro-hydraulic system
  • Wavelet neural network

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