항공우주시스템공학회지 (Journal of Aerospace System Engineering)

  • 제12권5호
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  • Pages.54-68
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  • 2018
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  • 1976-6300(pISSN)
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  • 2508-7150(eISSN)
항공우주시스템공학회 (The Society for Aerospace System Engineering)
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체크밸브 특성이 소형 압전유압펌프 유량에 미치는 효과

Effect of Check Valve Characteristics on Flow Rate of the Small Piezoelectric-Hydraulic Pump

  • 응위웬 안 푹 (한국항공대학교 항공우주 및 기계공학과 대학원) ;
  • 황재혁 (한국항공대학교 항공우주 및 기계공학부) ;
  • 황용하 (한국항공대학교 항공우주 및 기계공학과 대학원) ;
  • 배재성 (한국항공대학교 항공우주 및 기계공학부)
  • Nguyen, Anh Phuc (Department of Aerospace and Mechanical Engineering, Graduate School at KAU) ;
  • Hwang, Jai-Hyuk (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Hwang, Yong-Ha (Department of Aerospace and Mechanical Engineering, Graduate School at KAU) ;
  • Bae, Jae-Sung (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 투고 : 2018.08.06
  • 심사 : 2018.09.08
  • 발행 : 2018.10.31
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초록

본 논문에서는 소형 압전유압펌프에 적용된 체크밸브의 동적 특성이 유량 형성에 미치는 효과에 대한 연구를 수행하였다. 브레이크 시스템 작동을 위한 부하 압력의 형성을 위해서는 압전유압펌프의 유량이 중요한 요소이다. 이때, 유체 내에서 작동하는 체크밸브의 고유 진동수는 압전 유압펌프의 유량 형성에 큰 영향을 미친다. 또한, 체크밸브의 고유 진동수는 체크밸브와 펌프 시트 사이의 간격에 영향을 받는다. 이를 고려하여 본 연구에서는 체크밸브와 펌프 시트 사이의 간격에 따른 체크밸브의 고유진동수를 유체-구조 연성 해석을 통해 산출하였다. 시뮬레이션을 통해 얻은 유량은 개발된 압전유압펌프를 이용한 유량 형성 실험과의 비교를 통해 검증하였다.

The objective of this study is to analyze the effect of dynamic characteristics of the check valve applied to the small piezoelectric-hydraulic pumps on flow rate formation. The flow rate of the piezoelectric-hydraulic pump is a key factor in the formation of the load pressure to operate the brake system. At this time, the natural frequency of the check valve operating in the fluid has a great influence on the formulation of the flow rate of the piezoelectric-hydraulic pump. In addition, the natural frequency of the check valve is affected by the gap between the check valve and the pump seat. In this study, the natural frequency of the check valve according to the gap between the check valve and the pump seat was calculated through the fluid-structure interaction analysis. The flow rate obtained from the simulation result was verified by comparing it with the result from the flow rate experiment using the developed piezoelectric-hydraulic pump.

키워드

참고문헌

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