A noise reduction method of tandem axial piston pump utilizing indexing angle was proposed. A theoretical model of axial piston pump was conducted in order to analyze the theory on occurrence of noise excitation source. The comparison between simulation results and experimental results based on the test rig for measurement of flow ripple of axial piston pump showed that the mathematical model had high accuracy. Then the influences of indexing angle on the fluctuation rate and amplitude of out flow and torque applied on swash plate were investigated. The indexing angle was optimized to decrease the amplitude of excitation source to the greatest extent. The influences of load pressure and rotation speed of axial piston pump on the noise reduction effect of indexing angle were analyzed. Results indicated that the fluctuation rates of out flow and torque applied on swash plate were reduced respectively by more than 55% and 65% because of the superposition of waves that had a certain phase difference. The noise reduction effect was less sensitive to the operating parameters of pump. The power ratio of axial piston pump was not reduced meanwhile the noise excitation source was reduced.
XU Bing, ZHANG Jun-hui, YANG Hua-yong, YE Shao-gan. Simulation on noise reduction of tandem axial piston pump
utilizing indexing angle. J4, 2013, 47(1): 94-101.
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