A control method and device of a vehicle spoiler and a storage medium

Abstract

The application discloses a vehicle tail wing opening degree identification method and a vehicle tail wing opening and closing control method. The vehicle tail wing opening degree identification method comprises the following steps: in each opening and closing process, the tail wing opening degree is recalibrated according to a Hall signal and a micro switch signal. The vehicle tail wing opening and closing control method first identifies the vehicle tail wing opening degree, and then performs ice breaking or anti-pinch control on the vehicle tail wing in combination with the identified vehicle tail wing opening degree, a tail wing driving motor current signal and a tail wing running direction. The application further discloses a play prevention control method for accumulating a play prevention trigger threshold value through a tail wing opening and closing instruction interval time. The application improves the accuracy of tail wing position identification, improves the success rate of tail wing opening, meets the demand of safe vehicle driving at high speed, avoids excessive torque of the tail wing driving motor, avoids impact on the vehicle body, effectively prevents damage caused by repeated start of the driving motor or other components of the tail wing in a short time, and avoids damage caused by over-temperature of the tail wing driving motor.

Description

Technical Field

[0001] This invention belongs to the field of vehicle rear wing control, specifically relating to a control method, device, and storage medium for a vehicle rear wing. Background Technology

[0002] With the increasingly widespread application of automotive lightweighting technology, the overall weight of vehicles is becoming lighter and lighter. This results in insufficient grip when driving at high speeds, which reduces the overall handling of the vehicle and may, in severe cases, lead to loss of vehicle control and traffic accidents.

[0003] Therefore, rear wing systems that can automatically adjust their position according to vehicle speed are becoming increasingly widely used. The rear wing system needs to adjust its position based on vehicle speed. When the vehicle is traveling at low speeds, the rear wing retracts to reduce wind resistance and improve fuel economy; as the vehicle's speed increases, the rear wing gradually rises to improve the vehicle's aerodynamic performance, enhancing handling and high-speed driving safety.

[0004] Therefore, the control of the vehicle's rear wing plays a crucial role in its proper functioning, but existing rear wing control technologies still have the following problems:

[0005] (1) Existing technology only identifies the tail fin position based on Hall sensor, but the number of steps of Hall motor has errors. If the tail fin position is identified only based on Hall sensor, the error will also be large.

[0006] (2) In the prior art, when the tail wing is closed, there is no anti-pinch function, and the motor is always in a stalled state. The stalled tail wing drive motor is prone to overheating of the tail wing drive, which affects the service life of the motor; and when stalled, it will also affect the NVH of the whole vehicle.

[0007] (3) In the prior art, the tail wing does not have an ice-breaking function when it is opened. If it fails to open once, the tail wing will be abandoned. This is not conducive to the success rate of opening the tail wing and affects driving safety at high speed.

[0008] (4) The existing technology has a simple control logic for preventing the tail wing from being repeatedly started and damaged due to high-frequency triggering of the tail wing switch within a short period of time. It cannot cope with more complex anti-playing situations. Summary of the Invention

[0009] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention aims to solve the problems of inaccurate tail wing position identification, lack of anti-pinch and ice-breaking functions, and overly simple anti-play control logic in the existing tail wing, which cannot cope with more complex anti-play situations.

[0010] A method for controlling a vehicle rear wing includes a method for recognizing the opening degree of the vehicle rear wing and a method for controlling the opening and closing of the vehicle rear wing.

[0011] The vehicle rear wing opening recognition method includes recalibrating the rear wing opening based on Hall signals and microswitch signals during each opening and closing process.

[0012] 1) During the tail fin deployment process, when the microswitch is activated, determine that the tail fin opening is 100% and record the tail fin Hall number A at this time;

[0013] 2) During the tail fin closing process, when the microswitch is activated, determine that the tail fin opening is 0% and record the tail fin Hall number B at this time;

[0014] 3) During the opening and closing of the tail fin, the tail fin Hall number C and the real-time opening degree of the tail fin are recorded in real time. The tail fin opening P ranges from 0 to 100%; 0 represents fully closed, and 100% represents fully open.

[0015] The vehicle rear wing opening and closing control method first identifies the vehicle rear wing opening degree, and then combines the identified vehicle rear wing opening degree, rear wing drive motor current signal, and rear wing running direction to perform ice breaking or anti-pinch control on the vehicle rear wing.

[0016] Furthermore, the vehicle rear wing opening and closing control method first identifies the vehicle rear wing opening degree, and then combines the identified vehicle rear wing opening degree, rear wing drive motor current signal, and rear wing running direction to perform ice-breaking or anti-pinch control on the vehicle rear wing. Specifically, when the rear wing control device receives a rear wing opening or closing command, the rear wing drive motor drives the rear wing to move; during the rear wing movement, the rear wing position identification signal and drive motor current signal are acquired through sensors; when the drive motor continuously operates at a high current for a preset time, but the change in the rear wing position is small, the rear wing movement is identified as obstructed; when the rear wing movement is obstructed, corresponding ice-breaking or anti-pinch strategies are adopted according to the rear wing running direction; after ice-breaking or anti-pinch fails, the rear wing is controlled to stop moving; otherwise, the control of opening or closing the rear wing continues.

[0017] Furthermore, the icebreaking strategy is as follows: during the tail fin opening process, the tail fin drive motor current increases stepwise to its maximum; when the duration of the motor current at its maximum value is greater than a set value, but the tail fin opening is less than a set value, the tail fin opening is deemed to have failed, and the continuous two-stage icebreaking function is activated; during each icebreaking operation, the tail fin drive motor current increases stepwise from 0 to its maximum, operates at maximum current for 300ms to 500ms, and rests for 400ms to 600ms; during the icebreaking process, if the tail fin opening P is greater than a set value, the icebreaking is successful, and the tail fin drive motor current command is reduced to 50% to 70% until the tail fin is fully opened; otherwise, the icebreaking fails, and the tail fin opening is abandoned.

[0018] Furthermore, the anti-pinch strategy is as follows: during the tail wing closing process, the tail wing drive motor current gradually increases to the maximum; when the motor current is greater than the set value for a longer period than the set value, and the tail wing opening P is greater than the set value, the tail wing closing fails and the anti-pinch function is activated; once the anti-pinch function is activated, the tail wing closing is abandoned and the tail wing is restored to the fully open state; otherwise, the tail wing drive motor current command is reduced to 20%-40% until the tail wing is completely closed.

[0019] Furthermore, it also includes a method for preventing the use of counterfeit control by accumulating the anti-counterfeit trigger threshold through the interval between tail fin opening and closing commands.

[0020] Furthermore, the anti-play control method that accumulates the anti-play trigger threshold through the tail fin opening / closing command interval includes:

[0021] 1) Let N be the number of times the vehicle controller sends commands to the rear wing control device. When the vehicle controller sends the first command to the rear wing control device, set the value of N to 0. From then on, if the time interval Δ between the next command and the previous command is less than the time threshold t... 阀 If the value of N is increased by 1, then the value of N is increased by 1; if time t has elapsed since the last instruction was sent. 阀 If no instruction is received at this point in time, the value of N is decremented by 1. The value of N can continue to decrease until it reaches zero. If the time interval between the next instruction and the previous instruction is greater than t... 阀 Then the value of N remains unchanged;

[0022] 2) If the number of times N is greater than or equal to N 激活 Next, activate the anti-play mode and enter anti-play mode;

[0023] 3) After entering the anti-play mode, if the opening and closing command sending action is determined to be in an abnormal state, the vehicle controller will no longer send opening and closing commands to the rear wing control device, and at the same time, it will issue a reminder to the vehicle operator.

[0024] 4) In anti-play mode, the count of N still follows the increment / decrement rules in 1). When the value of N is less than the set value N for exiting anti-play mode, the count will be updated. 退出 Then exit the anti-play mode.

[0025] Furthermore, the method for reminding the vehicle operator is to display a pop-up message on the vehicle's interactive screen reminding the operator that "Anti-playing activation, the rear wing can only be opened or closed after a countdown T," where the countdown T > (N). 激活 -N 退出 ) × t 阀 .

[0026] Furthermore, it includes a processor and a memory, the memory storing a computer program, which, when executed by the processor, implements the aforementioned vehicle tail wing control method.

[0027] Furthermore, when the computer program is executed by the processor, it implements the aforementioned control method for the vehicle's rear wing.

[0028] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0029] (1) The vehicle rear wing control method of the present invention recalibrates the opening of the rear wing by using Hall signals and micro switch signals, thereby improving the accuracy of rear wing position recognition.

[0030] (2) The vehicle rear wing control method of the present invention, when the rear wing opening is obstructed, increases the motor current from 0 to the maximum in a stepwise manner to activate the ice-breaking function, improves the success rate of the rear wing opening, and meets the needs of safe driving of vehicles at high speed.

[0031] (3) The vehicle rear wing control method of the present invention activates the anti-pinch function when the rear wing is blocked from closing, so as to avoid the rear wing drive motor from overheating and affecting its service life; at the same time, the torque of the motor is reasonably controlled to avoid the rear wing drive motor torque being too large and to avoid impact on the vehicle body.

[0032] (4) The vehicle rear wing control method of the present invention adopts a more reasonable anti-play control strategy, which can effectively prevent the drive motor or other components of the rear wing from being repeatedly started in a short period of time, resulting in damage.

[0033] (5) The vehicle tail wing control method of the present invention constrains the time when the motor operates at the maximum current to avoid the tail wing drive motor from overheating and being damaged. Attached Figure Description

[0034] Figure 1 This is a schematic flowchart of a vehicle rear wing opening recognition method according to a preferred embodiment of the present invention;

[0035] Figure 2 This is a schematic flowchart of the anti-play control method according to a preferred embodiment of the present invention; Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Please refer to Figure 1 A method for controlling a vehicle rear wing, including a method for recognizing the opening degree of the vehicle rear wing and a method for controlling the opening and closing of the vehicle rear wing.

[0038] The vehicle rear wing opening recognition method includes recalibrating the rear wing opening based on Hall signals and microswitch signals during each opening and closing process.

[0039] 1) During the tail fin deployment process, when the microswitch is activated, determine that the tail fin opening is 100% and record the tail fin Hall number A at this time;

[0040] 2) During the tail fin closing process, when the microswitch is activated, determine that the tail fin opening is 0% and record the tail fin Hall number B at this time;

[0041] 3) During the opening and closing of the tail fin, the tail fin Hall number C and the real-time opening degree of the tail fin are recorded in real time. The tail fin opening P ranges from 0 to 100%; 0 represents fully closed, and 100% represents fully open.

[0042] The vehicle rear wing opening and closing control method first identifies the vehicle rear wing opening degree, and then combines the identified vehicle rear wing opening degree, rear wing drive motor current signal, and rear wing running direction to perform ice breaking or anti-pinch control on the vehicle rear wing.

[0043] The vehicle rear wing opening and closing control method first identifies the vehicle rear wing opening degree, and then combines the identified vehicle rear wing opening degree, rear wing drive motor current signal, and rear wing running direction to perform ice-breaking or anti-pinch control on the vehicle rear wing. Specifically, when the rear wing control device receives a rear wing opening or closing command, the rear wing drive motor drives the rear wing to move; during the rear wing movement, the rear wing position identification signal and drive motor current signal are acquired through sensors; when the drive motor continuously operates at a high current for a preset time, but the change in the rear wing position is small, the rear wing movement is identified as obstructed; when the rear wing movement is obstructed, corresponding ice-breaking or anti-pinch strategies are adopted according to the rear wing running direction; if ice-breaking or anti-pinch fails, the rear wing is controlled to stop moving; otherwise, the control of opening or closing the rear wing continues.

[0044] The icebreaking strategy is as follows: During the tail fin opening process, the tail fin drive motor current increases stepwise to its maximum. When the duration of the motor current at its maximum value exceeds a set value, but the tail fin opening is less than the set value, the tail fin opening is deemed a failure, and the continuous icebreaking function is activated twice. During each icebreaking operation, the tail fin drive motor current increases stepwise from 0 to its maximum, operating at maximum current for 300ms–500ms, followed by a 400–600ms rest period. During the icebreaking process, if the tail fin opening P exceeds the set value, the icebreaking is successful, and the tail fin drive motor current command is reduced to 50–70% until the tail fin is fully open. Otherwise, the icebreaking fails, and the tail fin opening is abandoned. (Note: Icebreaking occurs when the opening process is obstructed, requiring icebreaking to attempt successful tail fin opening; Anti-pinch function is activated when the closing process is obstructed, preventing unnecessary injury.)

[0045] The anti-pinch strategy is as follows: during the tail wing closing process, the tail wing drive motor current gradually increases to the maximum; when the motor current is greater than the set value for a longer period than the set value, and the tail wing opening P is greater than the set value, the tail wing closing fails and the anti-pinch function is activated; once the anti-pinch function is activated, the tail wing closing is abandoned and the tail wing is restored to the fully open state; otherwise, the tail wing drive motor current command is reduced to 20%-40% until the tail wing is completely closed.

[0046] It also includes a method for preventing play-related issues by accumulating the anti-play trigger threshold through the interval between tail fin opening and closing commands.

[0047] The anti-play control method that accumulates the anti-play trigger threshold based on the tail fin opening / closing command interval includes:

[0048] 1) Let N be the number of times the vehicle controller sends commands to the rear wing control device. When the vehicle controller sends the first command to the rear wing control device, set the value of N to 0. From then on, if the time interval Δ between the next command and the previous command is less than the time threshold t... 阀 (e.g. t) 阀 If the value of N is set to 10s, then the value of N is incremented by 1; if the time elapsed since the last instruction was sent is t... 阀 If no instruction is received at this point in time, the value of N is decremented by 1. The value of N can continue to decrease until it reaches zero. If the time interval between the next instruction and the previous instruction is greater than t... 阀 Then the value of N remains unchanged;

[0049] 2) If the number of times N is greater than or equal to N 激活 times, (e.g., N) 激活 Set to 15 times to activate anti-play mode;

[0050] 3) After entering the anti-play mode, if the opening and closing command sending action is determined to be in an abnormal state, the vehicle controller will no longer send opening and closing commands to the rear wing control device, and at the same time, it will issue a reminder to the vehicle operator.

[0051] 4) In anti-play mode, the count of N still follows the increment / decrement rules in 1). When the value of N is less than the set value N for exiting anti-play mode, the count will be updated. 退出 Then exit the anti-play mode.

[0052] The method for reminding the vehicle operator is to display a pop-up message on the vehicle's interactive screen stating "Anti-play activation, the rear wing can only be opened or closed after a countdown T," where the countdown T > (N). 激活 -N 退出 ) × t 阀 .

[0053] Example 2:

[0054] Embodiment 2 of the present invention provides a control device for a vehicle rear wing, including a processor and a memory. The memory stores a computer program, and when the computer program is executed by the processor, it implements the control method for the vehicle rear wing provided in Embodiment 1.

[0055] Example 3:

[0056] Embodiment 3 of the present invention provides a computer storage medium storing a computer program thereon, characterized in that, when the computer program is executed by a processor, it implements the vehicle tail wing control method provided in Embodiment 1.

[0057] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling a vehicle's rear wing, characterized in that, Including vehicle rear wing opening recognition method and vehicle rear wing opening Combined control methods; The vehicle rear wing opening recognition method includes recalibrating the rear wing opening based on Hall signals and microswitch signals during each opening and closing process. 1) During the tail fin deployment process, when the microswitch is activated, determine that the tail fin opening is 100% and record the tail fin Hall number A at this time; 2) During the tail fin closing process, when the microswitch is activated, determine that the tail fin opening is 0% and record the tail fin Hall number B at this time; 3) During the opening and closing of the tail fin, the tail fin Hall number C and the real-time opening degree of the tail fin are recorded in real time. The value of the tail fin opening P ranges from 0 to 100%. 0 represents all off, 100% represents all on; The vehicle rear wing opening and closing control method includes: firstly, identifying the vehicle rear wing opening degree, and then combining the identified vehicle rear wing opening degree, rear wing drive motor current signal, and rear wing running direction to perform ice-breaking or anti-pinch control on the vehicle rear wing. Specifically, when the rear wing control device receives a rear wing opening or closing command, the rear wing drive motor drives the rear wing to move; during the rear wing movement, the rear wing position identification signal and the rear wing drive motor current signal are acquired through sensors; when the rear wing drive motor continuously operates at a high current for a preset time, but the rear wing position change is small, the rear wing movement is identified as obstructed; when the rear wing movement is obstructed, corresponding ice-breaking or anti-pinch strategies are adopted according to the rear wing running direction; after ice-breaking or anti-pinch fails, the rear wing is controlled to stop moving; otherwise, the control of opening or closing the rear wing continues. During the tail fin opening process, the tail fin drive motor current increases stepwise to its maximum. When the motor current remains at its maximum value for a duration longer than the set value, but the tail fin opening is less than the set value, the tail fin opening is deemed to have failed, and the ice-breaking function is activated twice consecutively. During each ice-breaking operation, the tail fin drive motor current increases stepwise from 0 to its maximum, operates at maximum current for 300ms to 500ms, and rests for 400ms to 600ms. During the ice-breaking process, when the tail fin opening P is greater than the set value, the ice-breaking is successful, and the tail fin drive motor current command is reduced to 50% to 70% until the tail fin is fully open. Otherwise, if the icebreaking fails, abandon the attempt to open the tail fin.

2. The control method for a vehicle rear wing according to claim 1, characterized in that, The anti-pinch strategy is as follows: during the tail wing closing process, the tail wing drive motor current gradually increases to the maximum; when the motor current is greater than the set value for a longer period than the set value, and the tail wing opening P is greater than the set value, the tail wing closing fails and the anti-pinch function is activated; once the anti-pinch function is activated, the tail wing closing is abandoned and the tail wing is restored to the fully open state; otherwise, the tail wing drive motor current command is reduced to 20%-40% until the tail wing is completely closed.

3. The control method for a vehicle rear wing according to claim 1, characterized in that: It also includes a method for preventing play-related issues by accumulating the anti-play trigger threshold through the interval between tail fin opening and closing commands.

4. The control method for the vehicle rear wing according to claim 3, characterized in that: The anti-play control method that accumulates the anti-play trigger threshold based on the tail fin opening / closing command interval includes: 1) Let N be the number of times the vehicle controller sends commands to the rear wing control device. When the vehicle controller sends the first command to the rear wing control device, the value of N is set to 0. From then on, if the time interval Δ between the next command and the previous command is less than the time threshold t, the value of N is incremented by 1. If the time interval Δ between the next command and the previous command is less than the time threshold t, the value of N is incremented by 1. If no instruction is received at this point in time, the value of N is decremented by 1. The value of N can continue to decrease until it reaches zero. 2) If the number of iterations N is greater than or equal to Next, activate the anti-play mode and enter anti-play mode; 3) After entering the anti-play mode, if the opening and closing command sending action is determined to be in an abnormal state, the vehicle controller will no longer send opening and closing commands to the rear wing control device, and at the same time, it will issue a reminder to the vehicle operator. 4) In anti-play mode, the count of N still follows the increment / decrement rules in 1). When the value of N is less than the set value for exiting anti-play mode... Then exit the anti-play mode.

5. The control method for a vehicle rear wing according to claim 4, characterized in that, The method for reminding the vehicle operator is to display a pop-up message on the vehicle's interactive screen: "Anti-play activation, the rear wing can only be opened or closed after a countdown of time T." .

6. A control device for a vehicle rear wing, characterized in that, It includes a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the vehicle tail wing control method as described in any one of claims 1-5.

7. A computer storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the vehicle tail wing control method as described in any one of claims 1-5.

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