Motion protection method and system of vehicle door

Abstract

The invention discloses a motion protection method and system of a vehicle door. The motion protection method of the vehicle door comprises the steps that a protection drag torque is calculated according to the gradient of the road surface where a motor vehicle is located and the motion state of the vehicle door, an auxiliary drag torque is provided for the vehicle door according to the calculatedprotection drag torque to prevent the occurrence of the condition of damage to the vehicle door or a vehicle body caused by excessively fast vehicle door motion, and the bad usage experience broughtto a user caused by huge sound brought by excessively fast closing of the vehicle door is avoided. Particularly, the motion protection method of the vehicle door comprises the steps of obtaining the gradient of the road surface where the motor vehicle is located, the opening angle of the vehicle door, angular speed and angular acceleration of the vehicle door in the motion process, and the purposeof providing the auxiliary drag torque for the vehicle door according to the calculated protection drag torque is achieved according to an obtained parameter calculation protection drag torque.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, and more specifically, to a method and system for protecting a vehicle door from movement. Background technique [0002] With the continuous development of motor vehicles, a large number of auxiliary functions in motor vehicles have emerged, enriching the various functions of motor vehicles. [0003] However, most of these auxiliary functions are functions to assist the driver during the movement of the motor vehicle, such as lane departure warning, ACC adaptive cruise, etc., but there are very few auxiliary functions applied to the static state of the motor vehicle. For example, during the use of a motor vehicle, parking on a sloped road is a relatively common scene. When the motor vehicle is parked on an uphill slope, the user needs to close the door or when the motor vehicle is parked on a downhill slope, the user needs to open the door At this time, due to the existence of the ro...

AI Technical Summary

Problems solved by technology

For example, during the use of a motor vehicle, parking on a sloped road is a relatively common scene. When the motor vehicle is parked on an uphill slope, the user needs to close the door or when the motor vehicle is parked on a downhill slope, the user needs to open the door At this time, due to the existence of the road surface slope, the gravity of the motor vehicle door will have a component force along the direction of the road surface slope. This component force will cause the door to close too fast or the door to open too fast, which may cause damage to the door.

For example, the door is closed too fast, causing damage to the door and body, or the door is opened too fast and hits an obstacle or opens to the maximum angle to damage the connecting parts of the door or body.

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