High-frequency valve development for smart material electro-hydraulic actuators

John P. Larson; Marcelo J. Dapino

doi:10.1117/12.881958

28 April 2011 High-frequency valve development for smart material electro-hydraulic actuators

John P. Larson, Marcelo J. Dapino

Proceedings Volume 7979, Industrial and Commercial Applications of Smart Structures Technologies 2011; 79790E (2011) https://doi.org/10.1117/12.881958
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This paper presents two approaches to developing improved check valves for high frequency fluid rectification in a smart material electro-hydraulic actuator: a single reed-type design and an array of miniaturized valves. The multiphysics software COMSOL was used to study the 3-D fluid-structure interaction between the valve and hydraulic fluid during pump operation, and the results were validated utilizing an instrumented valve to measure in-situ tip displacement. The added mass effect of the fluid on the valve was experimentally characterized. To improve the frequency response of the valves, an array of miniature reed valves were designed for the high frequency and high pressure environment in the pump. A fabrication method was developed for the miniaturized valves utilizing micromachining processes. The performance of the two types of valves was compared through static and dynamic experiments.

Citation Download Citation

John P. Larson and Marcelo J. Dapino "High-frequency valve development for smart material electro-hydraulic actuators", Proc. SPIE 7979, Industrial and Commercial Applications of Smart Structures Technologies 2011, 79790E (28 April 2011); https://doi.org/10.1117/12.881958

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