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An Experimental Study on Static Characteristics of Servo Valves using Transmission Line Pressures
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  • Journal title : Journal of Drive and Control
  • Volume 13, Issue 2,  2016, pp.42-50
  • Publisher : Korea Society of Fluid Power & Construction Equipments
  • DOI : 10.7839/ksfc.2016.13.2.042
 Title & Authors
An Experimental Study on Static Characteristics of Servo Valves using Transmission Line Pressures
Kim, Sung Dong; Joo, Byeol Jin; Yun, So Nam;
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The conventional technique to measure the hysteresis and the null of servo valves is defined in ISO 10770-1 and based on load flow signal of the servo valve. A new technique based on the transmission line pressures is suggested in this study. The new measuring method was verified through a series of experiments. No hysteresis was observed between the spool displacement and the transmission line pressures, load pressure or each chamber pressure. Some hysteresis was observed between valve input and pressures, which was found to be the same as those of load flow and spool displacement for the valve input. By using the chamber pressures, the hysteresis and the null are easier to measure than the load pressure or differential pressure between those two chamber pressures because the chamber pressures showed sharp edges.
Servo valve;Hysteresis;Null;Flow rate;Transmission line pressure;Spool displacement;
 Cited by
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