油圧ポンプに起因する油圧システム内の圧力脈動の発生と伝ぱ : 第2報,油圧サイレンサの脈動伝達特性と性能評価法の検討

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Fluid-borne presure ripple in hydraulic systems may be a major source of the overall system noise levels as well as a major cause of the vibration of system components. The most common way to reduce the pressure ripple is the use of a hydraulic silencer. A number of criteria have been proposed for standard hydraulic silencer performance, but a reliable and a practical method for standard silencer assessment has not been established because these criteria are dependent on the wave transmission characteristics of all other system components as well as the silencer. This paper deals with the application of an experimental technique described in this first paper for the determination of matrix parameters of hydraulic system components. Experiments were conducted for a total of eight silencers of four typical geometrical configurations. It was found from a wide range of tests that the matrix parameters of various types of silencers could be obtained with good repeatability and with lower amount of scatter by carefully calibrating presure transducers and using two-channel FFT providing A-D convertor with a good resolving power. The transmission loss for standard silencer assessment could also be obtained readily by calculation using the experimentally deter-mined matrix parameters and the known relationship. Thus, the successful application of the existing measurement principle to the hydraulic silencer as well as the high quality of the results make it possible to use the test results as valuable materials for both modeling and assessing silencers as well as for producing less noisy hydraulic systems with less fluid-borne pressure ripple.
一般社団法人日本機械学会の論文
1995-03-25

油圧ポンプに起因する油圧システム内の圧力脈動の発生と伝ぱ : 第2報,油圧サイレンサの脈動伝達特性と性能評価法の検討

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