Title page for etd-0621102-035619


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URN etd-0621102-035619
Author Chung-Yi Cheng
Author's Email Address felix_cheng1@yahoo.com
Statistics This thesis had been viewed 5360 times. Download 2690 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2001
Semester 2
Degree Master
Type of Document
Language English
Title Hybrid Fuzzy PID Controller for an Active Vibration Control System via Genetic Algorithms
Date of Defense 2002-06-06
Page Count 74
Keyword
  • genetic algorithms
  • active vibration control
  • hybrid fuzzy controller
  • linear motor
  • Abstract Abstract
      We use the non-binary coding ,elitist strategy, increasing mutation rate, extinction, and immigration strategy to improve the simple genetic algorithms in this study. We expect that the search technique can avoid falling into the local optimum due to the premature convergence, and purse the chance that finding the near-optimal parameters in the larger searching space could be obviously increased.
      The accelerometer is then taken as the feedback sensor for output measurement, and the designed actuator and the PID fuzzy logic controller (PIDFLC) is implemented to actively suppress the vibration of the supporting mechanism that is due to the excitation effect of the high-speed and precision positioning action of the linear motor. From the computer simulations and the experimental results, it is obvious that the near-optimal PIDFLC controller designed by modified genetic algorithms can improve the effect of the vibration suppression; the settling time is also decrease. For the vibration suppressions of high-speed precision positioning problems, the vibrating supporting mechanism can quickly be stabilized.
    Advisory Committee
  • Huey-Yang Horng - chair
  • Yih-Tun Tseng - co-chair
  • Ing-Rong Horng - advisor
  • Files
  • etd-0621102-035619.pdf
  • indicate access worldwide
    Date of Submission 2002-06-21

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