Hill starting control method and device, vehicle control unit and vehicle

Abstract

The invention provides a hill starting control method and device, a vehicle control unit and a vehicle, and relates to the technical field of vehicles. The method comprises the steps that state information of a vehicle is acquired, and according to the state information of the vehicle, an anti-sliding function is determined to be enabled; when it is determined that the anti-sliding function is enabled, the current slope state of the vehicle is obtained; and the output torque of the motor is adjusted to be 0 according to the gradient state and the parameter corresponding to the gradient state. According to the control method for hill starting, when the enabling of the anti-sliding function is determined, the slope size recognition function is added, different adjustments can be carried out according to the slope size, the smoothness of the whole vehicle is improved, the problems that the vehicle shakes back and forth and the driving comfort of the vehicle is reduced due to the fact that the output torque of the motor is adjusted by fixed parameters are solved. According to the scheme, when the anti-sliding function is determined to be enabled, the sudden brake judgment condition is added, and unexpected entering of the anti-sliding function is completely eradicated.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method and device for starting on a hill, a vehicle controller and a vehicle. Background technique [0002] When a pure electric vehicle starts on a slope, the vehicle will slip backward during the process from the driver releasing the brake pedal to stepping on the accelerator, posing a risk of collision with the vehicle behind. To solve this problem, the existing technology collects signals such as the motor speed signal, gear signal, and accelerator pedal opening, and controls the motor to adjust the output torque through PI parameters to stop the vehicle on the slope when the vehicle is slipping backwards. [0003] However, there are two problems in the existing technology. Problem 1: The same set of PI parameters will have different performances on different slopes. For example, if the PI parameters calibrated on a slope of 20% are used on a slope of 10%, it ma...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a hill start control method, device, vehicle controller and vehicle to solve the problem of vehicle shaking back and forth caused by adjusting the output torque of the motor with fixed parameters, reducing the driving comfort of the vehicle and the sudden braking situation The problem of entering the anti-slope function by mistake

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