Vehicle electric back door control method capable of automatically adapting to environmental temperature

Abstract

The invention discloses a vehicle electric back door control method capable of automatically adapting to environmental temperature. An electric back door system is adopted; firstly, the environmental temperature range is divided into several areas in the electric back door system to determine reference values of parameters related to the temperature; when the electric back door system performs an electric door closing action, a back door motor performs a quick stop action in a door closing direction; stop current values are acquired to build a corresponding relation between the stop current values and a motor temperature; the motor temperature is determined, and is the environmental temperature; the area of the present environmental temperature is judged; the parameters related to the temperature have corresponding compensation values in different areas; according to different environmental temperatures, the parameters related to the temperature are correspondingly adjusted / compensated, that is, parameter values=reference values+-compensation values; and automatic change of the parameter values under different environmental temperatures is realized, so that the electric back door system automatically adapts to the temperature change. The parameters are automatically adjusted in the control process of the electric back door, so that wrong actions are reduced, and the system action performance is improved.

Description

technical field [0001] The invention belongs to the field of automobile motor control, and in particular relates to a method for controlling an electric back door of an automobile with an adaptive ambient temperature. Background technique [0002] With the advancement in the field of automotive technology and the improvement of the demand for operating comfort, the rear doors (that is, the tailgate) of many cars have been upgraded to electric rear doors. After inputting the command, the back door control unit of the car automatically controls the back door to open or close through the motor after receiving the command. In order to ensure that the electric back door can still move smoothly and meet the action time requirements in the case of changes in the external environment, a speed control method is added in the prior art; in order to prevent safety accidents during the operation of the electric back door and protect the mechanical structure from being damaged In the pri...

AI Technical Summary

Problems solved by technology

[0003] However, when the external environment temperature / motor temperature changes, the performance of the motor and the physical characteristics of the system will change to a certain extent. The electric back door system will cause malfunction due to the mismatch of parameters, which will cause damage to the mechanical structure or personal injury.

For example, if the speed control parameters cannot adapt to the changed temperature, it may cause the electric process of the electric back door to be unsmooth, and the electric action time cannot meet the customer's requirements; for example: when the anti-pinch parameter is calibrated at normal temperature, it may appear Anti-pinch misjudgment, misoperation, if the anti-pinch parameters consider high and low temperature conditions, it may cause customer complaints or even cause objects or personal injuries due to excessive anti-pinch force at room temperature; for example: the action parameters may be due to inappropriate The changing external temperature may cause incoherent, too fast and too slow movements of the back door; and the fault diagnosis parameters may cause misjudgment of faults because they are not suitable for the changed external temperature, which in turn affects the electric process of the back door , so the ambient temperature factor has an important influence on the control of the entire electric back door

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