Steuervorrichtung für ein proportionales, elektromagnetisches Ventil

摘要

A control device 20 for a proportional solenoid valve 10 which operates depending on a driving current supplied to a solenoid coil 11 is disclosed. The control device 20 is made up of a detecting device 17 for detecting a hysteresis "H" of the proportional solenoid valve 10 during operation thereof; and a dither amplitude correction device 21 - 25 for correcting a dither amplitude of the driving current in such a manner that when the hysteresis "H" is equal to or greater than a first predetermined value "a" and when the hysteresis is less than a second predetermined value "b" which is less than the first predetermined value "a", the dither amplitude is increased and decreased, respectively, from its current value.