| 摘要 |
PURPOSE: To precisely reduce a speed change shock by starting control of torque of an output shaft of an automatic transmission according to a value of a rate of change of rotating speed, and prohibiting output of a signal by masking a signal of a rate of change of rotating speed for a predetermined period from speed change starting time. CONSTITUTION: A speed change phase judging means 8 measures time until a speed change command value shows the final speed change position from a start of speed change, and when it is shorter than prescribed time, it is judged as sudden stepping, and when it is longer than that, it is judged as gradual stepping, and a speed change phase is judged. When a clutch of a non- continuously variable transmission is fastened in the final speed change position after the speed change is started, rotating speed of an output shaft of the transmission changes, and is transmitted to a driving shaft, and becomes a speed change shock. Then, in a mask means 3, a clutch fastening time detecting means 5 and a torque control means 6, various parameters are changed according to a speed change phase, and a signal waveform and the size or the like of the parameters are changed by a speed change condition, and various speed change shocks can be reduced. |
