Transactions of The Korea Fluid Power Systems Society (유공압시스템학회논문집)
- Volume 3 Issue 2
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- Pages.1-6
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- 2006
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- 1738-3315(pISSN)
Pressure Regulator for Piezoelectric Valve
압전 밸브용 압력 레귤레이터
Abstract
The pressure regulator which is used for controlling the reducing pressure in the piezoelectrically driven pneumatic valve has been studied. The pneumatic valve of this study object is 2-stage type and consists of a piezoelectric actuator, a controller, a poppet valve and a pressure regulator. Nominal flow of 50 lpm, maximum operating pressure of 0.9MPa and frequency characteristic of 10Hz and over are required in this pneumatic valve, but the pressure regulator is needed because piezoelectric actuator has no ability to control the pressure of 0.9MPa directly. In this study, bimorph type PZT actuator of
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