Patent ID: 8577571

Claim:
Clutch pressure control device comprising: a model based request filter unit calculating a target clutch pressure value from a requested clutch pressure value input in the request filter unit; a completely model based feedforward clutch pressure control model unit calculating, from the target clutch pressure value input by the request filter unit, a feedforward current value; and a PID control unit calculating a feedback current value from a valve pressure target value for a hydraulic proportional valve controlling clutch pressure and a feedback actual pressure value; the feedforward clutch pressure control model unit comprising a clutch model unit for calculating, from the target clutch pressure value, a flow of hydraulic fluid to be sent to or to be drained from a clutch; a second calculation unit calculating the valve pressure target value from the calculated flow and the target clutch pressure value; a proportional valve model unit calculating a target force and a target position for a solenoid of a proportional valve from the flow and the valve pressure target value; and a solenoid model unit that outputs the feedforward current value.