Abstract
This paper takes the servo valve spool as the research object. By analysing the influence of temperature on the friction between the spool and the hydraulic fluid and the effect of temperature on the friction between the spool and the valve sleeve, the theoretical calculation of the influence of temperature on the friction of the servo valve spool is carried out according to the analysis results. The hypothetical calculation results are verified by experimental simulation. In the low-temperature working environment, the friction between the spool and the hydraulic fluid of the servo valve spool decreases rapidly with the increase of temperature. In the high-temperature working environment, the friction force in direct contact between the spool and the valve sleeve is much greater than between the spool and the hydraulic fluid. When the spool and the valve sleeve are not deformed, the friction of the servo valve spool decreases gradually with increasing temperature.
Published Version
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