Method for improving gear shifting quality of vehicle automatic transmission under acceleration condition

Abstract

The invention discloses a method for improving gear shifting quality of a vehicle automatic transmission under the acceleration condition. The method comprises the following steps that a training signal sample and a training parameter sample are obtained; an acceleration condition recognition model is set, and training is carried out; through the acceleration condition recognition model, the acceleration condition type corresponding to work parameters is recognized; through the gear shifting quality comprehensive evaluation indicator, the clutch friction moment during acceleration condition gear shifting can be calculated, and through the clutch friction moment, clutch gear shifting is corrected. The method has the beneficial effects that a discrimination function is built for carrying outacceleration condition recognition, the recognition accuracy is high, robustness is high, multi-classifying of the condition can be achieved, according to the different acceleration condition, different variable change optimal schemes are set, according to different power needs, the gear shifting time and the gear shifting impact degree can be intelligently deployed, and the need of drivers withdifferent driving styles for the vehicle power can be met.

Description

technical field [0001] The invention relates to the technical field of vehicle automatic transmission control, in particular to a method for improving the shifting quality of a vehicle automatic transmission under acceleration conditions. Background technique [0002] Compared with traditional manual transmissions, automatic transmissions are easier to operate. The driver only needs to manipulate the throttle to obtain the desired shift response. This greatly reduces the complexity of the driver's operation, reduces the labor intensity, avoids the driver's fatigue driving to a certain extent, and reduces the probability of traffic accidents. [0003] At present, the dynamic and economical shift schedules of automatic transmissions are mainly formulated based on the driving state of the vehicle and the driver's operation input. Since the current automatic transmission often only has a fixed shift quality control strategy after the factory calibration is completed, that is, ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a control method for improving the shifting quality of a vehicle automatic transmission under acceleration conditions, so as to solve the problem of lack of consideration of the influence of different acceleration conditions on the shifting quality during the shifting process of the automatic transmission in the background art, so that the shifting quality of the automatic transmission can The process is more in line with the power requirements of drivers with different driving styles on the car, and the shift quality under different working conditions is improved:

Images