CONTROLLER OF CLUTCH

摘要

A hydraulic pressure command value used for slip control of the lockup clutch in a torque converter (4) is calculated from a feed forward hydraulic pressure value calculated by an FF value calculation means (21), and a feedback hydraulic pressure value calculated by a feedback value calculation means (22). When the feedback hydraulic pressure value is calculated, a deviation of difference judging means (14) judges whether the difference of an actual differential rotation and a target differential rotation deviates from a predetermined range or not, and if it deviates from a predetermined range, a feedback value correction means (23) calculates a correction value and corrects that feedback hydraulic pressure value. Since stability is assured without causing overshoot by converging the actual differential rotation to the target differential rotation with good response if the difference deviates from a predetermined range, and performing normal feedback control when the difference falls within the predetermined range, slip control of good response can be attained while assuring stability even if an engine is in high r.p.m., and high torque state.