DOI QR코드

DOI QR Code

Performance Testing of an Integrated Hybrid Actuator

집적형 하이브리드 구동장치의 성능시험

  • Received : 2012.10.16
  • Accepted : 2012.12.27
  • Published : 2013.01.01

Abstract

The piezoelectric-based hydraulic actuator is a hybrid device consisting of a hydraulic pump driven by piezoelectric stacks that is coupled to a conventional hydraulic cylinder via a set of fast-acting valves. Nowadays, such hybrid actuators are being researched and developed actively in many developed countries by requirement of high performance and compact flight system. In this research, operation principle and performance testing of the hybrid actuator were introduced. Output velocities have been measured in both loaded case and not loaded case and the blocking force also has been measured in external loaded case. The maximum velocity of the actuator is 53.3 mm/s, blocking force is 240.7 N and corresponding power output is 3.2 W.

집적형 하이브리드 구동장치는 적층형 압전재료(압전스택)를 이용한 마이크로 펌프에서 토출되는 유체로 피스톤을 구동시키는데 크기는 작으면서도 큰 구동력과 높은 속도를 동시에 출력할 수 있는 새로운 개념의 통합 구동장치로서 현재 소형화 및 고출력을 요구하는 항공 우주, 유도무기 등 다양한 분야에서 광범위하게 연구되고 있다. 본 연구에서는 이러한 하이브리드 구동장치의 구동원리 및 성능 시험에 대해 소개하였다. 우선 구동장치의 주 동력인 압전 스택의 성능 시험을 수행함으로써 압전 스택의 구동전력과 구동시간에 따른 성능 변화를 관찰하였고 다음 구동장치의 성능 시험을 통해 구동장치의 최대 이송속도와 최대 구동력을 측정하였다. 구동장치의 최대 이송속도는 53.3 mm/s로, 최대 구동력은 240.7 N으로, 최대 일률은 3.2 W로 측정되었다.

Keywords

References

  1. Mauck L. D. and Lynch C. S.. "Piezoelectric hydraulic pump development," Journal of Intelligent Material Systems and Structures, 2000, 11(10):758-764. https://doi.org/10.1177/104538900772663793
  2. Sirohi J., and Chopra I., "Design and development of a high pumping frequency piezoelectric-hydraulic hybrid actuator," Journal of Intelligent Material Systems and Structures, 2003, 14(3):13-147.
  3. Lindler J. E., Anderson E. H., and Regelbrugge M. E.. "Design and testing of piezoelectric-hydraulic actuators," In Proceedings of the SPIE, 2003, vol.5054, p.96-107.
  4. Cadou C. and Zhang B., "Performance Modeling of a Piezo-Hydraulic Actuator," Journal of Intelligent Material Systems and Structures, 2003, 149-164.
  5. Tan H., Hurst W., and Leo D.. "Performance modeling of a piezohydraulic actuation system with active valves," Smart Materials and Structures, 2005, 14(1):91-110. https://doi.org/10.1088/0964-1726/14/1/010
  6. Chaudhuri A and Wereley N. M., "Experimental validation of a hybrid electrostrictive hydraulic actuator analysis," ASME Journal of Vibration and Acoustics, 2010, vol. 132, no. 2, article no. 021006.
  7. Ellison J., "Investigation of active materials as driving elements in a hydraulic-hybrid actuator", Master's thesis, Unversity of Maryland, College Park, 2004.
  8. Sirohi J., Cadou C. and Chopra I. "Investigation of the dynamic characteristics of a piezohydraulic actuator", Journal of Intelligent Material Systems and Structures, 2005.

Cited by

  1. Study on flow distribution inside integrated hybrid actuator vol.28, pp.9, 2014, https://doi.org/10.1007/s12206-014-0819-6