Abstract
Electro-hydrostatic actuator (EHA) is a widely used power by wire integrated actuation in aircraft. The cylinder block/valve plate interface is the most critical friction pair of EHA piston pump, which significantly influences the overall performance and service life of EHA. Wide range of speed and pressure condition demanding in real flight causes great challenge to the bearing capacity of the cylinder block/valve plate interface. It is necessary to study the oil film stiffness in this friction pair. This paper presents a new effective test method for the oil film stiffness of the cylinder block/valve plate interface in EHA piston pump. A flow field model is established to describe the pressure distribution, and an oil film stiffness test bench is built. Based on the simulation result, the oil film stiffness test is carried out, and the best oil film support stiffness under different working conditions is obtained.
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Li, Y., Fu, J., Zhao, J., Fu, Y. (2022). Research on the Experimental System for Testing Oil Film Stiffness of the Cylinder Block/Valve Plate Interface of EHA Piston Pump. In: Jia, Y., Zhang, W., Fu, Y., Zhao, S. (eds) Proceedings of 2022 Chinese Intelligent Systems Conference. CISC 2022. Lecture Notes in Electrical Engineering, vol 951. Springer, Singapore. https://doi.org/10.1007/978-981-19-6226-4_19
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DOI: https://doi.org/10.1007/978-981-19-6226-4_19
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