Adaptive cruise gear-shifting control method based on two-stage planetary line two-speed transmission

Abstract

The invention discloses an adaptive cruise gear-shifting control method based on a two-stage planetary line two-speed transmission. The adaptive cruise gear-shifting control method based on the two-stage planetary line two-speed transmission comprises the following steps of: step one. obtaining the speed of the vehicle, the opening degree of an accelerator, the quality of the vehicle, the speed ofa previous vehicle, and the distance between the vehicle and the previous vehicle, and determining the reference gear coefficient of the vehicle according to the speed of the vehicle, the opening degree of the accelerator, the quality of the vehicle, the speed of the previous vehicle, and the distance between the vehicle and the previous vehicle; step two. obtaining the outdoor ambient temperature, humidity, road surface adhesion coefficients and outdoor light intensity, and determining the environment coefficients of vehicle running according to the outdoor ambient temperature, humidity, road surface adhesion coefficients and outdoor light intensity; and step three. judging the appropriate gear of the vehicle at the current running state according to the reference gear index of the vehicle and the environment index of vehicle running. The adaptive cruise gear-shifting control method based on the two-stage planetary line two-speed transmission can assist a driver to determine the correct gear-shifting opportunity and keeps the vehicle in an efficient working state.

Description

technical field [0001] The invention belongs to the technical field of vehicle shift control, in particular to an adaptive cruise shift control method based on a two-stage planetary two-speed transmission. Background technique [0002] The development of the automobile industry pollutes the human living environment very much, especially in big cities. The exhaust gas emitted by various motor vehicles seriously endangers human health. This hazard is particularly serious in industrially developed countries. The electric drive system does not emit any substances, that is, zero emissions, and is environmentally friendly. Therefore, gradually replacing gasoline vehicles with electric vehicles is the direction of efforts of all countries in the world today. [0003] The automobile transmission is a transmission device used to coordinate the engine speed and the actual driving speed of the wheels, and is used to exert the best performance of the engine. The transmission can produ...

AI Technical Summary

Problems solved by technology

[0005] When the vehicle is running, the driver needs to change the gear according to the road surface to keep the vehicle in an efficient working state. However, in the actual driving process, some drivers cannot accurately judge the timing of shifting due to lack of experience, resulting in low working efficiency and high energy consumption.

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