METHOD AND DEVICE FOR CONTROLLING THE SLIP OF A VEHICLE CLUTCH

摘要

The invention relates to a method for controlling the slip of a vehicle clutch. According to said method, the difference between a speed signal of a drive-end input shaft of the clutch and a filtered speed signal of a transmission-end output shaft of the clutch are maintained at a desired value. The method comprises the following steps: a) a raw signal n_raw corresponding to a current speed of the transmission-end output shaft of the clutch (12) is used to calculate a sliding average n_ma the averaging range of N interrupts of which is adapted to a chatter frequency 1/T for a respective gear; b) the sliding average n_ma calculated in the current interrupt and a sliding average n_ma_old calculated during the previous interrupt are used to calculate a derivation of the sliding average n_dot; c) the calculated derivation of the sliding average n_dot and a smoothed derivation of the speed signal n_dot_filt_old calculated during the previous interrupt are used, in conjunction with a PT1 filter, to calculate a smoothed derivation of the speed signal n_dot_filt; d) the filter speed signal n_filt_old calculated during the previous interrupt and the smoothed derivation n_dot_filt are used to calculate a predicted speed signal n_pred for the current interrupt; e) the raw signal n_raw and the filter speed signal n_filt_old filtered during the previous interrupt are used to calculate a weighted average n_PT1; and f) the weighted average n_PT1 and the predicted speed signal n_pred are used to calculate the filter speed signal n_filt.