Method for controlling opening of electric sliding door using follow-up acceleration

Abstract

The present invention relates to the field of automobile control, and more specifically, to a method for controlling the opening of an electric side sliding door with follow-up acceleration, comprising the following steps: 1) setting a motor current drop threshold, a side sliding door speed rise threshold, and a press duration threshold; 2) using a vehicle smart key or a side sliding door switch to send a door opening signal, and when the side sliding door receives the door opening signal, it enters a constant target speed opening state; 3) during the constant target speed opening state, pressing an anti-pinch safety edge causes the electric side sliding door to achieve follow-up acceleration; when the press duration of the anti-pinch safety edge exceeds the press duration threshold, and simultaneously the motor current drop exceeds the motor current drop threshold, or the side sliding door speed rise exceeds the side sliding door speed rise threshold, the side sliding door enters an accelerated opening state until it reaches its maximum travel and stops. The present invention enables a vehicle to proactively identify the user's intention through the anti-pinch safety edge of the electric side sliding door and promptly adjust the opening speed of the electric side sliding door.

Description

Technical Field

[0001] The present invention relates to the field of automobile control, and in particular to a method for controlling the opening of an electric side sliding door with follow-up acceleration. Background Art

[0002] Usually, the electric side sliding door is controlled by the car's smart key or sliding door switch. The sliding door is opened electrically or remotely, and the door opening operation can be completed without manual pushing and pulling. It is one of the car's configuration functions.

[0003] To prevent accidents such as collisions caused by overly rapid opening of the side sliding door, the door opens at a relatively slow, constant target speed, typically around 50-100 mm / s. In inclement weather such as rain, snow, or hail, users can apply force to the door handle to accelerate the door's opening, increasing its speed.

[0004] However, since some cars' electric side sliding doors have cancelled the sliding door handle setting, this handle-less sliding door means that users can no longer control the opening speed of the side sliding door through the sliding door handle. Once encountering bad weather, users can only wait awkwardly for the side sliding door to slowly open before they can enter the car, which greatly affects the user experience. Summary of the Invention

[0005] The purpose of the present invention is to address the corresponding deficiencies in the existing technology and provide a method for following acceleration to control the opening of an electric side sliding door, so that the car can actively identify and judge the user's intention through the anti-pinch safety touch edge of the electric side sliding door, and timely adjust the opening speed of the electric side sliding door to meet user needs.

[0006] The object of the present invention is achieved by adopting the following scheme: a method for controlling the opening of an electric sliding door with follow-up acceleration, comprising the following steps:

[0007] 1) Set the motor current falling threshold, the sliding door speed rising threshold, and the sliding door anti-pinch safety edge pressing duration threshold;

[0008] 2) Use the car smart key or side sliding door switch to send a door opening signal. When the side sliding door receives the door opening signal, it enters the constant target speed opening state;

[0009] 3) During the constant target speed opening state, the electric side sliding door is accelerated by pressing the anti-pinch safety edge. When the pressing duration of the anti-pinch safety edge is greater than the pressing duration threshold, and the motor current decrease is greater than the motor current decrease threshold, or the side sliding door speed increase is greater than the side sliding door speed increase threshold, the side sliding door enters the accelerated opening state until it stops at its maximum opening stroke.

[0010] Preferably, after the side sliding door enters the accelerated opening state, the speed of the side sliding door in the accelerated opening state is determined according to the pressing duration of the anti-pinch safety touch edge, and the opening of the side sliding door is controlled by follow-up acceleration.

[0011] Preferably, the pressing duration threshold includes a first threshold, a second threshold, and a third threshold, and the third threshold > the second threshold > the first threshold. An initial speed target value, an intermediate speed target value, and a maximum speed target value are set, and the speed of the side sliding door in the accelerated opening state is determined according to the following steps to perform follow-up acceleration control on the opening of the side sliding door:

[0012] ① If the second threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the first threshold value, the speed of the sliding door in the accelerated opening state is the initial speed target value;

[0013] ② If the third threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the second threshold value, the speed of the sliding door in the accelerated opening state is the intermediate speed target value;

[0014] ③ If the pressing duration of the anti-pinch safety edge is ≥ the third threshold, the speed of the sliding door in the accelerated opening state is the maximum speed target value.

[0015] Preferably, the intermediate speed target value is calculated according to the following formula:

[0016] V IOC = V OB + (V OM - V OB ) × (T PSH - T SOO ) / ( T SOM - T SOO )

[0017] Where V IOC is the intermediate speed target value, V OB is the initial speed target value, V OM is the maximum speed target value, T PSH The duration of pressing the anti-pinch safety edge, T SOM is the third threshold, T SOO is the first threshold.

[0018] Preferably, acceleration prohibition upper and lower limits are set. During the opening process of the electric side sliding door, if the side sliding door opening stroke ≤ acceleration prohibition lower limit, or the side sliding door opening stroke ≥ acceleration prohibition upper limit, the side sliding door is only in a constant target speed opening state.

[0019] The advantage of the present invention is that even if some cars cancel the handle design on the electric side sliding door, the opening of the electric side sliding door can still be controlled by follow-up acceleration through the anti-pinch safety touch edge, which conveniently and quickly identifies the user's operation intention, greatly improves the user experience, makes the design of the electric side sliding door more humane, and also ensures the reliability and safety of the operation of the electric side sliding door. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a flow chart of the present invention;

[0021] Figure 2 A flow chart for determining the speed of a sliding door in an accelerated opening state in the present invention;

[0022] Figure 3 Schematic diagram of the principle of the anti-pinch safety touch edge in the present invention. DETAILED DESCRIPTION

[0023] like Figures 1 to 3 As shown, a method for controlling the opening of an electric sliding door with follow-up acceleration includes the following steps:

[0024] 1) Set the motor current falling threshold, the sliding door speed rising threshold, and the sliding door anti-pinch safety edge pressing duration threshold;

[0025] 2) The vehicle smart key or side sliding door switch sends a door opening signal. When the side sliding door receives the door opening signal, it enters a constant target speed opening state. The constant target speed of the side sliding door in the constant target speed opening state is 50 to 100 mm / s.

[0026] 3) During the constant target speed opening state, the electric side sliding door is accelerated by pressing the anti-pinch safety edge. When the pressing duration of the anti-pinch safety edge is greater than the pressing duration threshold, and the motor current decrease is greater than the motor current decrease threshold, or the side sliding door speed increase is greater than the side sliding door speed increase threshold, the side sliding door enters the accelerated opening state until it stops at its maximum opening stroke.

[0027] In this embodiment, the pressing duration threshold includes a first threshold, a second threshold, and a third threshold, and the third threshold is greater than the second threshold and greater than the first threshold. An initial speed target value, an intermediate speed target value, and a maximum speed target value are set, and the initial speed target value is less than the intermediate speed target value and less than the maximum speed target value. After the side sliding door enters the accelerated opening state, the speed of the side sliding door in the accelerated opening state is determined based on the pressing duration of the anti-pinch safety edge, and follow-up acceleration control is performed on the opening of the side sliding door:

[0028] ① If the second threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the first threshold value, the speed of the sliding door in the accelerated opening state is the initial speed target value. In this embodiment, the initial speed target value is 200 mm / s.

[0029] ② If the third threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the second threshold value, the speed of the sliding door in the accelerated opening state is the intermediate speed target value;

[0030] In this embodiment, the intermediate speed target value is calculated according to the following formula:

[0031] V IOC = V OB + (V OM - V OB ) × (T PSH - T SOO ) / ( T SOM - T SOO )

[0032] Where V IOC is the intermediate speed target value, V OB is the initial speed target value, V OM is the maximum speed target value, T PSH The duration of pressing the anti-pinch safety edge, T SOM is the third threshold, T SOO is the first threshold;

[0033] ③ If the pressing duration of the anti-pinch safety edge is greater than or equal to the third threshold, the speed of the sliding door in the accelerated opening state is the maximum speed target value. In this embodiment, the maximum speed target value is 300 mm / s.

[0034] Generally, in order to improve the reliability and safety of the electric side sliding door during operation, an acceleration prohibition upper limit value and an acceleration prohibition lower limit value can be set. In this embodiment, the acceleration prohibition lower limit value is 100mm, and the acceleration prohibition upper limit value is equal to the maximum stroke of the side sliding door minus 100mm.

[0035] During the opening process of the electric side sliding door, the opening stroke of the side sliding door is judged. If the opening stroke of the side sliding door is ≤ the lower limit value of the acceleration prohibition, or the opening stroke of the side sliding door is ≥ the upper limit value of the acceleration prohibition, the side sliding door is only opened at a constant target speed to prevent the electric side sliding door from colliding with people or the vehicle body due to excessive speed.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A method for controlling the opening of an electric sliding door by follow-up acceleration, characterized in that: The following steps are involved: 1) Setting the motor current drop threshold, the sliding door speed rise threshold, the initial speed target value, the intermediate speed target value, the maximum speed target value, and the pressing duration threshold of the sliding door anti-pinch safety edge. The pressing duration threshold includes a first threshold, a second threshold, and a third threshold, and the third threshold is greater than the second threshold and greater than the first threshold. 2) Use the car smart key or side sliding door switch to send a door opening signal. When the side sliding door receives the door opening signal, it enters the constant target speed opening state; 3) During the constant target speed opening state, the electric side sliding door is accelerated by pressing the anti-pinch safety edge. When the pressing duration of the anti-pinch safety edge exceeds the pressing duration threshold, and the motor current decreases by more than the motor current decrease threshold, or the side sliding door speed increases by more than the side sliding door speed increase threshold, the side sliding door enters the accelerated opening state. The speed of the side sliding door in the accelerated opening state is determined based on the pressing duration of the anti-pinch safety edge in the following manner, and the opening of the side sliding door is controlled by follow-up acceleration until it stops at its maximum travel: ① If the second threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the first threshold value, the speed of the sliding door in the accelerated opening state is the initial speed target value; ② If the third threshold value is greater than the pressing duration of the anti-pinch safety edge and greater than or equal to the second threshold value, the speed of the sliding door in the accelerated opening state is the intermediate speed target value; ③ If the pressing duration of the anti-pinch safety edge is ≥ the third threshold, the speed of the sliding door in the accelerated opening state is the maximum speed target value.

2. The method for controlling the opening of an electric sliding door with follow-up acceleration according to claim 1, wherein: The intermediate speed target value is calculated according to the following formula: V IOC = V OB + (V OM - V OB ) × (T PSH - T SOO ) / ( T SOM - T SOO ) Where V IOC is the intermediate speed target value, V OB is the initial speed target value, V OM is the maximum speed target value, T PSH The duration of pressing the anti-pinch safety edge, T SOM is the third threshold, T SOO is the first threshold.

3. The method for controlling the opening of an electric sliding door by follow-up acceleration according to claim 1, wherein: Set the acceleration prohibition upper and lower limits. During the opening process of the electric sliding door, if the side sliding door opening stroke ≤ the acceleration prohibition lower limit, or the side sliding door opening stroke ≥ the acceleration prohibition upper limit, the side sliding door will only be opened at a constant target speed.

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