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http://dx.doi.org/10.5139/JKSAS.2007.35.3.231

Influence of valve plate configuration on torque ripple of a bi-directional bent-axis type hydraulic piston pump  

Kim, Sung-Hun (한국기계연구원 신뢰성평가센터)
Hong, Yeh-Sun (한국항공대학교 항공우주 및 기계공학부)
Kim, Doo-Man (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.3, 2007 , pp. 231-237 More about this Journal
Abstract
The torque ripple of the hydraulic pumps for the Electro-hydrostatic Actuators can disturb the cylinder position control under slewing speed operation condition. In principle, the periodic change of the reaction torque generated by a piston type pump is highly dependent on the waveform of its cylinder chamber pressure. In case of uni-directional pumps operating at constant speed, the transient overshoot and rising slope of the cylinder pressure can be adjusted by the precompression angle and notch shape of their valve plates. Therefore, the influence of the valve plate geometry on the torque ripple magnitude of a bent-axis type piston pump for EHA application was investigated in this study. The results showed that any improvement of the torque ripple of such a bi-directional pump can not be achieved by modifying the valve plate geometry, regardless of its operation speed.
Keywords
Valve plate; Bent-axis type hydraulic piston pump; Bi-directional pump; Torque ripple;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Hibi, A. and Ichikawa, T., 'Torque performance of hydraulic motor and its mathematical model', 4th International Fluid Power Symposium, Sheffield, UK, 1975
2 Hong, Y. S., Doh, Y. H., 'Analysis on the friction loss of a bent-Axis type hydraulic piston pump', KSME Int. J., Vol. 18, 2004, No.9
3 안종민, 최섭, 이용표, '전기유압식 구동기 개발 동향 및 시스템 구성', 한국항공우주학회 추계학술발표회 논문집, pp. 909-912, 2006
4 Habibi, S., Goldenberg, A., 'Design of a New High-Performance Electro-Hydraulic Actuator', IEEE/ASME Transactions on Mechatronics, Vol. 5, No.2, June 2000
5 김도현, 홍예선, 김두만, 'Electro-Hydrostatic Actuator의 성능해석', 한국항공우주학회 추계학술발표회 논문집, pp. 913-917, 2006
6 Darling, L 'Piston-cylinder dynamics in oil hydraulic axial piston pumps', Ph.D. thesis, School of Mechanical Engineering, University of Bath, England, 1985
7 Harris, R. M., Edge, K. A., Tiley, D. G., 'The suction dynamics of positive displacement axial piston pumps', J. Dynamic Systems, Measurement, and Control, Vol. 116, 1994, pp. 281-288   DOI   ScienceOn
8 Helgestad, B. O., Foster, K., Bannister. F. K., 'Pressure transients in an axial piston hydraulic pump', Proc. Instn, Mechanical Engineers, Vol. 188 17/74, 1974, pp. 189-199
9 Kim, S. H., Hong, Y. S., 'Analysis on the Relationships between the Valve Plate Geometry and the Housing Vibration of a Bent-axis Type Hydraulic Piston Pump', J. KSME, Vol. 30, 2006, pp. 52-59   과학기술학회마을   DOI   ScienceOn