드라이브 ㆍ 컨트롤 (Journal of Drive and Control)

  • 제9권4호
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  • Pages.14-18
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  • 2012
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  • 2671-7972(pISSN)
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  • 2671-7980(eISSN)
유공압건설기계학회 (The Korean Society for Fluid Power and Construction Equipment)
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벤더형 고응답 압전밸브의 주파수 특성에 관한 연구

A Study on Frequency Characteristics of a Bender Type High-Speed Piezoelectric Pneumatic Valve

  • Yun, S.N. (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials) ;
  • Ham, Y.B. (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials) ;
  • Park, J.H. (Extreme Mechanical Engineering Research Division, Korea Institute of Machinery & Materials) ;
  • Lee, S.S. (Energy Mechanical Engineering Research Division, Korea Institute of Machinery & Materials)
  • 투고 : 2012.08.20
  • 심사 : 2012.09.10
  • 발행 : 2012.12.01
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초록

Two kinds of piezoelectric actuator are applied to the valve for controlling the direction, the flow and the pressure of the fluid. One is a stack type piezoelectric actuator which has very fast response characteristics but very tiny displacement. The other is a bender type piezoelectric actuator which has also fast response characteristics but lower than the stack type one, and has longer displacement than the stack type one. So, the bender type piezoelectric actuator has advantage to apply to the valve for controlling a large amount of flow and fast on-off operating. In this study, the bender type piezoelectric pneumatic valve for color sorter is designed and fabricated. The new type high speed piezo valve with the both side supporting mechanism for high operating frequency and high reliability is discussed for separating the foreign body from the grains. Finally, the performance characteristics of a fabricated valve are analyzed and the frequency characteristics are also discussed for substituting the conventional type solenoid actuator.

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참고문헌

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