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http://dx.doi.org/10.7839/ksfc.2016.13.1.034

Effect of Spool-Sleeve Geometry on Static Pressure Characteristics of Servo Valves  

Kim, Sung Dong (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
Son, Sung Hoe (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
Ham, Young Bog (Extreme Energy Machinery lab, Korea Institute of Machinery & Materials Industrial Machinery)
Publication Information
Journal of Drive and Control / v.13, no.1, 2016 , pp. 34-42 More about this Journal
Abstract
This study studied how the clearance, overlap and mismatch errors of spool-sleeve affect the static pressure characteristics of a servo valve. A computer simulation model was established as a direct acting servo valve and a series of simulations was conducted for various values of clearance, overlap and mismatch errors. Pressure gain decreased as the clearance increased. The overlap also affects the pressure gain and was similar to the effect of clearance. Asymmetry of the pressure plot got worse and worse as the mismatch error increased.
Keywords
Pressure Gain; Hysteresis; Clearance; Overlap; Mismatch Error;
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