THE HYDRAULIC SERVO VALVE WHICH HAS A HYSTERESIS REDUCATION FUNCTION

摘要

PURPOSE: A hydraulic servo valve having a hysteresis reducing function is provided to maintain a balanced state and secure smooth operation by coupling a bushing to the exterior of a plunger. CONSTITUTION: A hydraulic servo valve having a hysteresis reducing function comprises a sleeve(104), a spool(105), a linear actuator, a coil assembly(112), a core cap(114), a plunger(115), and a bushing. The sleeve and the spool are installed inside a valve body(103) and determines a fluid moving path. The linear actuator moves the spool. The bushing removes a gap between the plunger and the core cap and keeps the plunger balanced not to incline in a specific direction and prevent hysteresis caused by interferences and friction with peripheral parts.