Manual-transmission vehicle hill starting control method based on electronic parking brake

Abstract

The invention discloses a manual-transmission vehicle hill starting control method based on an electronic parking brake. According to the control process of the method, the electronic parking brake is started, and whether a vehicle is in a starting preparation state or not is judged; if yes, vehicle resistance and vehicle power are calculated, and whether the electronic parking brake meets a starting releasing condition or not is judged according to the magnitude relation between the vehicle resistance and the vehicle power; if the electronic parking brake meets the starting releasing condition, the electronic parking brake starts to be gradually released, and wheel speed pulses of front wheels and rear wheels of the vehicle are detected in the releasing process of the electronic parking brake; and whether the electronic parking brake is gradually released till the electronic parking brake is completely released or the current state of the electronic parking brake is kept and the vehicle resistance and the vehicle power are recalculated is judged according to the wheel speed pulses of the front wheels and the rear wheels of the vehicle. Extra parts such as a clutch opening degree sensor are not needed, hill starting of the manual-transmission vehicle can be achieved through conventional signals and optimization algorithms, and the control process is simple and effective.

Description

technical field [0001] The invention belongs to the technical field of automobile control, and in particular relates to a method for controlling ramp start of a manual transmission automobile based on an electronic parking system. Background technique [0002] The parking brake of a traditional manual transmission car is generally completed by manual operation. When starting on a hill, the parking handle is manually operated to reduce the parking force to start the hill. The natural defect of this method is that it is unsafe when starting. And can't operate for the less powerful driver. The electronic parking system has been maturely used in automatic transmission vehicles. Although a small number of electronic parking systems are currently used in manual transmission vehicles, they are all controlled by adding clutch opening sensors (sensors that detect the degree of clutch engagement) and other components. , increasing the design difficulty, process and cost of the clutch...

AI Technical Summary

Problems solved by technology

[0002] The parking brake of a traditional manual transmission car is generally completed by manual operation. When starting on a hill, the parking handle is manually operated to reduce the parking force to start the hill. The natural defect of this method is that it is unsafe when starting. And it cannot be operated by drivers with small strength

The electronic parking sys

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