alexa Noise Reduction|Omics Group|Journals|Journal Of Aeronautics And Aerospace Engineering

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Noise Reduction

The performance of a pulse suppressor, currently used to alleviate pump-induced noise in automotive power steering systems, was characterized in this research. A hydraulic test system was developed to evaluate the noise attenuation effects of a pulse suppressor as well as other devices. Four pressure transducers were used to measure the dynamic pressures in the pressure line at different locations (two before and two after the suppression device); thus it was possible to determine the transfer matrix elements relating line pressures to noise. The transmission loss (the criteria used to determine the noise isolation performance of a noise reduction device) for this device was also estimated. The test system was verified by using a 0.52-meter section of steel tubing. Good agreement was obtained between the experimental and theoretical matrix elements. [Chen CC, Harrison O, McKinney AK (2012) Investigation of Fluidborne Noise Reduction in Automotive Hydraulic Power Steering Systems].
 
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