Volume 33 Issue 03
Mar.  2007
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Lu Zesheng, Zhang Qiang. Fuzzy-PID double mode control of ultra-precision AC servo syst em[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(03): 315-318. (in Chinese)
Citation: Lu Zesheng, Zhang Qiang. Fuzzy-PID double mode control of ultra-precision AC servo syst em[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(03): 315-318. (in Chinese)

Fuzzy-PID double mode control of ultra-precision AC servo syst em

  • Received Date: 04 Apr 2006
  • Publish Date: 31 Mar 2007
  • It is difficult to establish mathematical mode for AC servo system , because it has several disadvantages, such as parameters varying as time, load disturbing, motor being non-linear, and so on. Fuzzy control need not establis h the mathematical mode of controlled plant, but steady state precision is bad. A fuzzy-PID double mode controller was presented, which combined fuzzy controlle r and PID controller. Different controller was adopted in different domain, so th e double mode controller combined the advantages of fuzzy controller and PID con t roller, and get rid of the disadvantages of them. The double mode controller is easy to realize. Experiment results show that the fuzzy-PID double mode controller reduces settling time by 33.7% without overshooting and decreases tra cking error by 47.2% in comparison to standard PID controller.

     

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