Load-Sensing Pump Design to Reduce Heat Generation of Electro-Hydrostatic Actuator Systems

Qun Chao, Junhui Zhang, Bing Xu, Yaoxing Shang, Zongxia Jiao and Zhihui Li
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Qun Chao: State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
Junhui Zhang: State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
Bing Xu: State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
Yaoxing Shang: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Zongxia Jiao: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Zhihui Li: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China

Energies, 2018, vol. 11, issue 9, 1-13

Abstract: The electro-hydrostatic actuator (EHA) with variable pump displacement is considered to be a promising alternative to the currently popular EHA with fixed pump displacement in terms of heat reduction. This paper presents a load-sensing pump for the EHA which requires no additional power source and can adjust its volumetric displacement automatically with load pressure. A load-sensing pump prototype was developed and experiments were carried out on a test rig for it under different operating conditions. In addition, an experimental campaign was performed on an EHA test bench with a load-sensing pump and a fixed displacement pump. The results show that the load-sensing pump can decrease its volumetric displacement automatically at high pressure and thus reduce the heat generation of EHA system effectively.

Keywords: aircraft; electro-hydrostatic actuator (EHA); heat reduction; load-sensing pump (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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