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Title page for etd-0818104-134615


URN etd-0818104-134615 Statistics This thesis had been viewed 1908 times. Download 9 times.
Author Ming-Ching Hsieh
Author's Email Address g9101017@ms2.ttu.edu.tw
Department Mechanical Engineering
Year 2004 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 64
Title The Trajectory Tracking of a Piezoelectric Actuator Driven X-Y Table System Using Fuzzy T-S Model-Based Variable Structure Decentralized Control
Keyword
  • Weighted sensitivity minimization in H∞ -nor
  • Dead-beat control
  • Discrete-time variable structure control
  • Fuzzy linear pulse transfer function
  • Lyapunov redesign
  • Piezoelectric actuator driven x-y table
  • Piezoelectric actuator driven x-y table
  • Lyapunov redesign
  • Fuzzy linear pulse transfer function
  • Discrete-time variable structure control
  • Dead-beat control
  • Weighted sensitivity minimization in H∞ -nor
  • Abstract To begin with, each subsystem of a piezoelectric actuator driven x-y table system (PAD-XY-TS) was approximated by a weighted combination of L linear pulse transfer function systems (LPTFSs). For every nominal LPTFS of the ith subsystem, a dead-beat to its switching surface was first designed. The output disturbance of the mth LPTFS included the interconnections coming from the other subsystems, the approximation error of the ith subsystem, and the interactions resulting from the other LPTFSs. In general, this output disturbance was not small and contains various frequencies. In this situation, the H∞-norm of the weighted sensitivity function between the mth switching surface and its corresponding output disturbance was minimized. In addition, an appropriate selection of the weighted function for the sensitivity could reject the corresponding mode of the output disturbance. Although the effect of the output disturbance is attenuated and partially rejected, a better performance could be enhanced by a switching control based on the Lyapunov redesign. In addition, the stability of the overall system was verified by Lyapunov stability theory. The compared experiments of the trajectory tracking of the piezoelectric actuator driven x-y table were carried out to confirm the practicality of the proposed control.
    Advisor Committee
  • Chih-Lyang Hwang - advisor
  • Chau Jan - co-chair
  • Long- Jyi Yeh - co-chair
  • Files indicate in-campus access only
    Date of Defense 2004-07-16 Date of Submission 2004-08-18


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