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http://dx.doi.org/10.5293/KFMA.2003.6.3.051

Research for the Effect of Accumulator and the High Frequency-Hydraulic System of Frequency Characteristics by Experimental Method  

Park, Nam-Eun (조선대학교 항공조선공학부 대학원)
Kim, Jae-Soo (조선대학교 항공조선공학부)
Kim, Yang-Soo (조선대학교 항공조선공학부 대학원)
Kim, Jong-Rok (조선대학교 항공조선공학부)
Rho, Hyung-Woon (인천전문대 기계과)
Jeon, Seung-Bae ((주)정광기공)
Na, Hong-Chul ((주)정광기공)
Publication Information
The KSFM Journal of Fluid Machinery / v.6, no.3, 2003 , pp. 51-57 More about this Journal
Abstract
Characteristics of the high frequency pulsatile flow have been investigated experimentally to understand the flow phenomena in the hydraulic system. One axis fatigue test bed, which is widely used for automobile field test, is used. Four pressure transducers, an amplifier and a A/D convertor are used to obtain the high frequency pulsatile pressure waveform in hydraulic system. The characteristics of frequency are analyzed by power spectrum method. According to the variations of pump input pressure and actuator acceleration frequency, the pressure is measured with or without an accumulator. The amplitude of pressure with accumulator is very lower than those without accumulator due to absorbing function of accumulator. As the frequency of actuator acceleration is increased, the effect of accumulator become very important to decrease the amplitude of pulsatile pressure waveform with high frequencies.
Keywords
Accumulator; Actuator; High Frequency; Hydraulic System; Pressure Fluctuations;
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