Electric tailgate speed control method and device

Abstract

The invention provides a speed control method and device for an electric tail gate. The speed control method for the tail gate is applied to the electric tail gate in a manual operation process and includes the following steps: S1, judging whether a first control variable of the electric tail gate is larger than a manual operation threshold value or not, S2, conducting brake control on the electric tail gate if the first control variable of the electric tail gate is larger than the manual operation threshold value to ensure that the control variable of the electric tail gate is not larger than the manual operation threshold value in the manual operation process and a mechanical supporting structure is not damaged, S3, making brake measures instantly in a manually opened state when the electric tail gate is close to an extreme position, S4, reducing the speed of the electric tail gate to zero to protect the mechanical structure of the electric tail gate, S5, judging whether the control variable of the electric tail gate is larger than a manual-lock brake threshold value or not when the electric tail gate is in a manual-lock state, and S6, conducting brake control if the control variable of the electric tail gate is larger than the manual-lock brake threshold value to prevent the electric tail gate from smashing into a gate lock and damaging the mechanical structure. According to the speed control method for the electric tail gate, the speed of the electric tail gate is guaranteed to be stable and a user can use the electric tail gate safely when the user opens or closes the electric tail gate manually too fast.

Description

technical field [0001] The invention relates to the field of automation, in particular to a method and device for controlling the speed of an electric tailgate. Background technique [0002] With the advancement of technology in the automotive field and the continuous improvement of the quality of life of human beings, cars have become an indispensable means of transportation for human beings to go out. Humans will inevitably carry items when they go out, and use the tailgate of the car to load and unload items. In order to facilitate human beings Using the tailgate of the car, the tailgate of many cars has been changed to an electric state. Humans send control commands to the tailgate of the car through the remote control switch, and the tailgate of the car receives the control command and controls the tailgate of the car to open or close automatically through the program. The tailgate controlled by the control command is called the electric tailgate, the process of the ele...

AI Technical Summary

Problems solved by technology

General cars do not have an electric control process to prevent the electric tailgate from being too fast when the control command for the electric tailgate is to stop. Therefore, if the electric tailgate is at the maximum position, the user manually closes the electric tailgate. The movement speed of the tailgate is too fast. In the middle process from the maximum open position to the fully closed position of the electric tailgate, if the electric tailgate moves too fast, the supporting mechanism supporting the electric tailgate will be damaged; If the speed of the electric tailgate exceeds the threshold when it is near the door lock, it will cause the electric tailgate to smash into the door lock, causing damage to the door lock

[0005] If the electric tailgate is completely closed, as the gravity of the electric tailgate increases, the user needs to use a lot of force when opening the electric tailgate manually, and the user experience is poor when opening the tailgate. In the process of turning the electric tailgate from the fully closed position to the maximum open position, if the user exerts too much force, it will also cause damage to the mechanism supporting the electric tailgate. The speed at which the electric tailgate reaches the maximum open position should be zero. If the electric tailgate Reaching the maximum open position with too high a speed can cause damage to the supporting structure at the maximum open position

[0006] When the user operates the electric tailgate while the electric tailgate is in a state where the control command is to stop, there is no electric control process for preventing the electric tailgate from being too fast when the control command for the electric tailgate is to stop in the prior art. Therefore, when the user manually opens or closes the electric tailgate too quickly, the speed of the electric tailgate will be too fast, resulting in damage to the mechanical structure of the electric tailgate, thereby reducing the safety factor of the user during use.

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