Robust control of an LUSM-based X-Y-θ motion control stage using an adaptive interval type-2 fuzzy neural network

Faa Jeng Lin, Po Huan Chou, Po Huang Shieh, Syuan Yi Chen

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The robust control of a linear ultrasonic motor based X - Y - θ motion control stage to track various contours is achieved by using an adaptive interval type-2 fuzzy neural network (AIT2FNN) control system in this study. In the proposed AIT2FNN control system, an IT2FNN, which combines the merits of an interval type-2 fuzzy logic system and a neural network, is developed to approximate an unknown dynamic function. Moreover, adaptive learning algorithms are derived using the Lyapunov stability theorem to train the parameters of the IT2FNN online. Furthermore, a robust compensator is proposed to confront the uncertainties including the approximation error, optimal parameter vectors, and higher order terms in Taylor series. To relax the requirement for the value of lumped uncertainty in the robust compensator, an adaptive lumped uncertainty estimation law is also investigated. In addition, the circle and butterfly contours are planned using a nonuniform rational B-spline curve interpolator. The experimental results show that the contour tracking performance of the proposed AIT2FNN is significantly improved compared with the adaptive type-1 FNN. Additionally, the robustness to parameter variations, external disturbances, cross-coupled interference, and frictional force can also be obtained using the proposed AIT2FNN.

Original languageEnglish
Pages (from-to)24-38
Number of pages15
JournalIEEE Transactions on Fuzzy Systems
Volume17
Issue number1
DOIs
Publication statusPublished - 2009 Feb 25

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Fuzzy neural networks
Fuzzy Neural Network
Motion Control
Motion control
Robust control
Robust Control
Interval
Neural Network Control
Compensator
Control systems
Taylor series
Adaptive algorithms
Control System
Ultrasonic Motor
Splines
Learning algorithms
Uncertainty Estimation
Fuzzy logic
Linear Motor
Uncertainty

Keywords

  • Linear ultrasonic motor (LUSM)
  • Lyapunov stability theorem
  • Type-2 fuzzy logic system (FLS)
  • Type-2 fuzzy neural network (T2FNN)
  • X-Y-θ motion control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computational Theory and Mathematics
  • Artificial Intelligence
  • Applied Mathematics

Cite this

Robust control of an LUSM-based X-Y-θ motion control stage using an adaptive interval type-2 fuzzy neural network. / Lin, Faa Jeng; Chou, Po Huan; Shieh, Po Huang; Chen, Syuan Yi.

In: IEEE Transactions on Fuzzy Systems, Vol. 17, No. 1, 25.02.2009, p. 24-38.

Research output: Contribution to journalArticle

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