Solenoid valve control system, a control valve system, and a method of controlling electronic valve

A solenoid valve control system for controlling a solenoid valve interposed between an input side and an output side of a flow path for oil, comprising:

• a solenoid valve drive circuit which applies a drive current to the solenoid valve based on designated drive current value and drive frequency;
• a pressure data calculation unit which calculates a pressure data including a pressure fluctuation band and a pressure fluctuation cycle from a pressure value of the oil on the output side of the solenoid valve;
• a pressure hysteresis calculation unit which calculates a difference between the pressure value when the drive current value is increased and the pressure value when the drive current value is decreased as a hysteresis amount;
• a vibration determination unit which determines whether or not the pressure data is included in an area outside the pressure data range, which is outside a first predetermined range;
• a hysteresis determination unit which determines whether or not the pressure hysteresis amount is included in an area outside the pressure hysteresis amount range, which is outside a second predetermined range;
• and
• a drive frequency adjustment unit which adjusts a drive frequency based on the determination result from the vibration determination unit and the hysteresis determination unit.