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

Author

Listed:
  • 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
    Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China)

  • Zongxia Jiao

    (School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
    Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China)

  • Zhihui Li

    (School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
    Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China)

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.

Suggested Citation

  • Qun Chao & Junhui Zhang & Bing Xu & Yaoxing Shang & Zongxia Jiao & Zhihui Li, 2018. "Load-Sensing Pump Design to Reduce Heat Generation of Electro-Hydrostatic Actuator Systems," Energies, MDPI, vol. 11(9), pages 1-13, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2266-:d:166355
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    References listed on IDEAS

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    1. Junhui Zhang & Ying Li & Bing Xu & Min Pan & Fei Lv, 2017. "Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps," Energies, MDPI, vol. 10(5), pages 1-15, May.
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    Cited by:

    1. Edward Lisowski & Grzegorz Filo & Janusz Rajda, 2021. "Analysis of the Energy Efficiency Improvement in a Load-Sensing Hydraulic System Built on the ISO Plate," Energies, MDPI, vol. 14(20), pages 1-14, October.
    2. Nie, Songlin & Gao, Jianhang & Ma, Zhonghai & Yin, Fanglong & Ji, Hui, 2023. "An online data-driven approach for performance prediction of electro-hydrostatic actuator with thermal-hydraulic modeling," Reliability Engineering and System Safety, Elsevier, vol. 236(C).

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