Simulation of Piezoelectric high-speed digital valves

X Ouyang, H Yang, H Jiang, D Nigel Johnston

Research output: Contribution to conferencePaper

Abstract

As hydraulic transmission and control technology develops, the digital valve is becoming popular, and it has the potential to replace servo or proportional valves in industrial appli-cations for its excellent performance. At present the digital valve can not obtain a high response, high pressure and high flow rate together, which limits its application fields. An innovative idea of a piezoelectric digital valve is outlined to improve the performance of the digital valve. Two piezoelectric stacks are used to open and close the poppet valve. The characteristic of quick-response and high force of the piezoelectric stack is used to kick off the poppet; furthermore the micro displacement of the piezoelectric stack is avoided successfully. Temperature compensation of the piezoelectric actuator is consid-ered in the valve. The structure of the digital valve is discussed, and its mathematical model is built. Simulation results show that the piezoelectric digital valve can get a frequency of 250 Hz, flow rate of 10L/Min, and pressure of 200 bar simultaneously.
Original languageEnglish
Pages183-197
Number of pages15
Publication statusPublished - 2008
EventBath/ASME Symposium on Fluid Power and Motion Control 2008 - Bath
Duration: 10 Sep 2008 → …

Conference

ConferenceBath/ASME Symposium on Fluid Power and Motion Control 2008
CityBath
Period10/09/08 → …

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