EXPERIMENTAL STUDY OF LEAKAGE COMPENSATION ON DYNAMIC CHARACTERISTICS OF HYDRAULIC POWER SYSTEMS | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 53, Volume 16, 16th International Conference on Applied Mechanics and Mechanical Engineering., May 2014, Page 1-17 PDF (936.27 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2014.35606 | ||||
View on SCiNiTO | ||||
Authors | ||||
M. A. Pascal1; A. S. Abou El-Azm2; R. Taher3 | ||||
1M. Sc. Student, Arab Academy for Science and Technology and Maritime Transport (AASTMT), Cairo branch, Cairo, Egypt. | ||||
2Egyptian Armed Forces. | ||||
3Professor, AASTMT, Cairo branch, Cairo, Egypt. | ||||
Abstract | ||||
ABSTRACT Leakage compensation in constant load speed hydraulic systems is highly required to have a precise control of the job target. To achieve this two options are available, either pump control or flow control. In the present work, experimental investigation of a constant load speed system test rig equipped with proportional electro-hydraulic valve and variable pump is studied. The leakage compensation has been achieved by controlling the proportional electro-hydraulic valve input volt or controlling the pump speed through frequency modulator. The study aims to highlight the difference between these two control options on the dynamic and steady state response of the system. The supply and return cylinder pressures, cylinder displacement and flow rate are recorded. Different external leakages have been intentionally introduced in the connections to the flow control valve to simulate the external system leakage. Results showed that the dynamic and steady state system performance have been affected by the system leakage. The volt control signal for proportional DCV and frequency control for pump control could be used for leakage compensation through controller with a precise control algorithm to compensate leakage in electrohydraulic proportional systems. | ||||
Keywords | ||||
External system leakage; leakage compensation; proportional directional control valve; constant load speed hydraulic system | ||||
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