Method and device for preventing vehicle from sliding downward on slopes

Abstract

The invention discloses a method and device for preventing a vehicle from sliding downward on slopes, wherein the method for preventing the vehicle from sliding downward on slopes comprises the following steps: acquiring the gear information and headstock angle information of the vehicle and the brake state of a brake pedal; judging the upslope state and downslope state of the vehicle according to the gear information and the headstock angle information, and when the vehicle is in the upslope state or the downslope state and the brake pedal is braked, respectively acquiring first, second, third and fourth inclination angle signals of first, second, third and fourth wheels of the vehicle; and generating slope stabilizing torque and climbing assistant coefficients according to the first, second, third and fourth inclination angle signals, and generating distributed slope stabilizing torques of first, second, third and fourth motors corresponding to the first, second, third and fourth wheels according to the slope stabilizing torque and climbing assistant coefficients as well as the upslope state and downslope state of the vehicle. The method and device for preventing the vehicle from sliding downward on slopes, disclosed by the invention, can effectively prevent the vehicle from sliding downward when the vehicle is parked on various slopes; and when one motor is damaged or two motors are damaged or the output torque is limited, the vehicle can also be ensured to be stabilized on the slopes.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method and a device for preventing a vehicle from sliding downhill. Background technique [0002] In the related technology, the assistant for going up and down the bus by the side of the wheel judges the slope by the inclination, and then provides torque according to the slope to prevent the car from slipping. [0003] The disadvantage of the related technology is: the wheel-side bus has only two drive motors, so after a certain drive motor is broken or the output torque is limited, the other drive motor will not be able to meet the stable slope torque due to the limited maximum output torque. To achieve the effect of controlling the stability of the wheel-side bus on the ramp. In addition, when the ramp surface of the bus parked by the wheel is uneven, the problem of slippery slopes is likely to occur. Therefore, it is necessary to improve the related technology. Content...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the related technology is: the wheel-side bus has only two drive motors, so after a certain drive motor is broken or the output torque is limited, the other drive motor will not be able to meet the stable slope torque due to the limited maximum output torque. Achieve the effect of controlling the stability of the wheel-side bus on the ramp

In addition, when the ramp surface of the bus parked by the wheel is uneven, there may be a slippery slope problem

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