초록 ▼

A lock-up clutch control method controls a torque converter comprising an input shaft through which a rotating force from an engine is input, an output shaft which outputs a driving force to the side of driving wheels and a lock-up clutch which operates in response to a hydraulic pressure. A control

A lock-up clutch control method controls a torque converter comprising an input shaft through which a rotating force from an engine is input, an output shaft which outputs a driving force to the side of driving wheels and a lock-up clutch which operates in response to a hydraulic pressure. A control element controls an engaging pressure of the lock-up clutch by way of the hydraulic pressure. The engaging force of the clutch is controlled in accordance with calculated results of a target following up section for calculating a controlled variable so that a slip follows up a target slip and a control system stabilizing section for calculating the controlled variable so that the disturbance applied to the control system is compensated. Thereby, a stable control may be realized without receiving any effect of the disturbance. The disturbance may be estimated and learned for more accurate control.

대표청구항 ▼

[ What is claimed is:] [1.] A computer-implemented process for controlling a slip between input and output shafts of a torque converter, said method comprising the steps of:monitoring operating conditions of an engine and a turbine connected thereto to determine said slip;calculating a slip deviatio

[ What is claimed is:] [1.] A computer-implemented process for controlling a slip between input and output shafts of a torque converter, said method comprising the steps of:monitoring operating conditions of an engine and a turbine connected thereto to determine said slip;calculating a slip deviation between said slip and a target slip;calculating a time change in said slip;calculating a target follow-up value from said slip deviation;calculating a control system stabilizing value for compensating an effect of a disturbance applied to a control system from said slip and said time change;obtaining a controlled variable for a hydraulic pressure adjusting unit from said target follow-up value and said control system stabilizing value; andcontrolling said hydraulic pressure adjusting unit, which is operatively coupled to said torque converter, based on said controlled variable to control said slip.