Title page for etd-0701103-224518


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URN etd-0701103-224518
Author Yi-Kuang Chen
Author's Email Address m9038667@student.nsysu.edu.tw
Statistics This thesis had been viewed 5359 times. Download 3811 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2002
Semester 2
Degree Master
Type of Document
Language English
Title Hybrid Fuzzy PID Controller with Adaptive Genetic Algorithms for the Position Control of Linear Motors
Date of Defense 2003-06-06
Page Count 76
Keyword
  • position control
  • relay feedback
  • hybrid fuzzy PID controller
  • linear motors
  • fuzzy control
  • genetic algorithms
  • Abstract Abstract
      This thesis studies on the design of hybrid fuzzy PID controller via genetic algorithms and the position control of linear DC motors. Due to the high precision and high speed positioning ability, linear DC motors have been widely used in many fields. However, with the higher requirements of positioning accuracy, the effect of nonlinear friction becomes very significant. Because of the large difference between dynamic friction in macrodynamic region and static friction in microdynamic region, we design the two-stage controller for positioning in macrodynamic and microdynamic stage individually. In the macrodynamic stage, we use the hybrid fuzzy PID controller and finding the optimal membership functions and scaling factors of the controller via adaptive genetic algorithms to enhance performance of the system. A novel formula for calculating adaptive crossover and mutation rate is also presented. Since it is not easy to establish a precise static friction model in the microdynamic region, the relay feedback method is adopted to design PID controllers. Finally, through computer simulations and experiments, it is obviously that the performance of the proposed controllers is satisfactor
    Advisory Committee
  • Jyh-Horng Chou - chair
  • Huey-Yang Horng - co-chair
  • Ing-Rong Horng - advisor
  • Files
  • etd-0701103-224518.pdf
  • indicate access worldwide
    Date of Submission 2003-07-01

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