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Fluidborne noise interactions in hydraulic systems contribute to the overall system noise level and shorten the lives of system components . A major source of fluidborne noise is the positive- displacement pump. The pump generates a flow ripple, which, when coupled to a system, produces fluidborne noise. To predict accurately the effect of a particular pump on the fluidborne noise in a system, the fluidborne noise characteristics of positive-displacement pumps must be understood and quantified. The fluidborne noise characteristics of positive displacement pumps can be m easured by four reasonable techniques. This paper discusses the methodology and theoretical bases of four techniques that have been considered for experimentally determining the fluidborne noise characteristics of positive displacement pumps. Experimental results obtained using two of the techniques are presented. (A)


Journal article


Basic fluid power res. j.

Publication Date





235 - 241