Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Tuning of PID Controller for Hydraulic Positioning System Using Genetic Algorithm

유전 알고리즘을 이용한 유압 위치계의 PID 제어기 동조

  • Kim, Gi-Bum (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Park, Seung-Min (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Kim, In-Soo (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
  • 김기범 (금오공과대학교 기계시스템공학과) ;
  • 박승민 (금오공과대학교 기계시스템공학과) ;
  • 김인수 (금오공과대학교 기계시스템공학과)
  • Received : 2015.10.21
  • Accepted : 2016.03.29
  • Published : 2016.06.30
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Abstract

This study presents a simple genetic algorithm to systematically design a PID controller for a hydraulic positioning system operated by a proportional solenoid valve. The inverse dead-zone compensator with nonlinear characteristics is used to cancel out the dead-zone phenomenon in the hydraulic system. The object function considering overshoot, settling time, and control input is adopted to search for optimal PID gains. The designed PID controller is compared with the LQG/LTR controller to check the performance of the hydraulic positioning system in the time and frequency domains. The experimental results show that the hydraulic servo system with the proposed PID controller responds effectively to the various types of reference input.

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References

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