Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Identification and Control of a Electro-Hydraulic Servo System Using a Direct Drive Valve

압력제어용 DDV를 이용한 전기.유압 서보시스템의 식별 및 제어

  • 이창돈 (부산대학교 대학원 지능기계공학과) ;
  • 이상훈 (부산대학교 대학원 지능기계공학과) ;
  • 곽동훈 (현대중공업 기계전기연구소) ;
  • 이진걸 (부산대학교 기계공학부)
  • Published : 2003.02.01
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Abstract

The electro-hydraulic servo system with a servo valve is applied widely in force control. However, the composition of control system using a servo valve is difficult due to nonlinearities in the servo valve, such as square-root terms in flow equation. The electro-hydraulic servo system using a DDV(Direct Drive Valve) instead of a servo valve was proposed and it's characteristics was estimated. The DDV and whole system are modelled by parameter identification using the input-and-output data, then the models are verified by the comparison of simulation with experiment. Also, the state feedback controller has been designed based on this model, then the performance of the electro-hydraulic force servo system using a DDV is evaluated by simulation and experimental results.

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References

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