Hydraulic control device and method for vehicle

A hydraulic control device for a vehicle, the hydraulic control device performing control to decide a command hydraulic pressure, which corresponds to command torque, based on predetermined torque hysteresis characteristics, and to supply a hydraulic pressure, which corresponds to the command hydraulic pressure, to a hydraulic clutch, the hydraulic control device comprising:

• a base determination unit that makes a determination of base neutral when a difference between the command hydraulic pressure and an actual hydraulic:
• pressure of the hydraulic clutch is within a predetermined minute value range, and when the difference is out of the minute value range, makes a determination of base raising if the command hydraulic pressure is larger than the actual hydraulic pressure, and makes a determination of base lowering when the command hydraulic pressure is smaller than the actual hydraulic pressure;
• a sub determination unit that performs low-pass filter processing for the command torque, makes a determination of sub raising when an inclination of the command torque subjected to the low-pass filter processing is positive for a predetermined time or more, and makes a determination of sub lowering when the inclination is negative for the predetermined time or more;
• and
• a characteristic decision unit that decides the command hydraulic pressure by using pressurization characteristics in the torque hysteresis characteristics when the determination of the base raising is made, decides the command hydraulic pressure by using depressurization characteristics in the torque hysteresis characteristics when the determination of the base lowering is made, and when the determination of the base neutral is made, decides the command hydraulic pressure by using the pressurization characteristics in the torque hysteresis characteristics if the sub determination unit makes the determination of the sub raising, and decides the command hydraulic pressure by using the depressurization characteristics in the torque hysteresis characteristics if the sub determination unit makes the determination of the sub lowering.