CONTROLLER FOR FRICTIONAL CLUTCH FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To perform judder reduction control by counting a frequency when the first and second frequency constituents in clutch output shaft rotational fluctuation exceed the first and second threshold values and determining judder when the first counting value reaches the first predetermined value. SOLUTION: By means of a rotation fluctuation detecting means 100, pulse cycles are measured by sampling at a fixed period after the waveform shaping of outputs from input/output rotational speed sensors 222, 224 for a starting clutch, and a mean value for the movement of the starting clutch is computed, and on the basis of the mean value, the number of revolutions is computed at a fixed period so as to be used as an input/output shaft rotational speed of the shafting clutch. A starting clutch slip ratio is computed from a ratio between them so as to be filter-processed in the first and second filter means 104, 105 via an alternating current waveform deforming means 102. Subsequently, the first and second threshold values are set in the first and second threshold value setting means 106, 108, the filter waveforms are compared with the threshold values in the first and second counting means 110, 112, a frequency of the waveforms exceeding the threshold value is counted, and it is determined whether judder is caused because of vibration or not by means of a determining means. If it is determined that judder is based on vibration, control by means of a judder reduction control executing means 116 is carried out.