Control method and device of three-section electric tail wing, storage medium and automobile

Abstract

The application provides a control method and device of a three-section electric tail wing, a storage medium and a vehicle. The control method comprises self-learning of vertical stroke and horizontal stroke of the electric tail wing, and opening or closing of the electric tail wing. The self-learning of the vertical stroke and the horizontal stroke of the electric tail wing can obtain a closing soft stop point Hclose when the electric tail wing is horizontally folded, an unfolding soft stop point Hopen when the electric tail wing is unfolded horizontally, a descending soft stop point Vclose when the electric tail wing is vertically descended, and an ascending soft stop point Vopen when the electric tail wing is vertically ascended. The opening or closing of the electric tail wing comprises controlling the opening and closing of the electric tail wing according to the ascending soft stop point Vopen, the unfolding soft stop point Hopen, the closing soft stop point Hclose and the descending soft stop point Vclose. The application can reduce or avoid wear of a connecting rod mechanism of the three-section electric tail wing, improve the durability of the electric tail wing, and improve the use quality of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of automotive electric rear wing technology, and particularly to a control method for a three-section electric rear wing. The invention also relates to a control device for a three-section electric rear wing, and an automobile equipped with the control device. Background Technology

[0002] An electric rear wing, also known as an electric spoiler, is a car component that affects the overall airflow of a car during high-speed driving. The rear wing mainly provides a vertical downward pressure on the overall airflow, which can improve the stability of the car body and enhance its grip during driving. It can also indirectly reduce the car's energy consumption and play a certain role in modifying the overall appearance of the car.

[0003] Among various electric rear wings for automobiles, the three-section electric rear wing is a relatively novel structural form. The wing itself consists of three sections, and its opening and closing are achieved through a motor and linkage mechanism. When the wing is closed, the left and right sections are horizontally joined together, with the middle section positioned below the joined sections, and the entire wing lowers to a preset stowage position. When the wing is open, it rises vertically, and as it rises, the side sections simultaneously unfold horizontally to the left and right, ultimately joining with the middle section to form the complete rear wing. Once the entire wing is in position, the opening is complete.

[0004] However, existing three-section electric rear wings still suffer from wear and tear on the linkage mechanism during use, which affects the durability of the electric rear wing and reduces the overall quality of the vehicle. In addition, the instantaneous output power of the rear wing controller is often relatively high at the moment of opening or closing the rear wing, which can cause shock to the controller, making it prone to failure and thus affecting the normal operation of the electric rear wing. Summary of the Invention

[0005] In view of this, the present invention aims to propose a control method for a three-segment electric tail wing, which can reduce or avoid wear on the linkage mechanism of the electric tail wing.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A control method for a three-segment electric tail fin, the control method including self-learning of the vertical and horizontal strokes of the electric tail fin, and opening or closing the electric tail fin;

[0008] The self-learning of the vertical and horizontal travel of the electric tail fin includes:

[0009] When the electric tail fin is initially powered on, the electric tail fin is controlled to fold and unfold horizontally, and to descend and ascend vertically. The closing hard stop point Hmin when the electric tail fin is folded horizontally, the unfolding hard stop point Hmax when it is unfolded horizontally, the descent hard stop point Vmin when the electric tail fin descends vertically, and the ascending hard stop point Vmax when it ascends vertically.

[0010] Based on the closed hard stop point Hmin, the deployed hard stop point Hmax, the descending hard stop point Vmin, and the ascending hard stop point Vmax, the closed soft stop point Hclose and the deployed soft stop point Hopen when the electric tail fin is horizontally folded are obtained, as well as the descending soft stop point Vclose and the ascending soft stop point Vopen when the electric tail fin is vertically descending are obtained.

[0011] The opening or closing of the electric tail fin includes:

[0012] When the electric tail fin is deployed, it is controlled to rise to the rising soft stop Vopen in the vertical direction and to extend to the extending soft stop Hopen in the horizontal direction.

[0013] When the electric tail fin is closed, it is controlled to fold to the closing soft stop Hclose in the horizontal direction and to descend to the descending soft stop Vclose in the vertical direction.

[0014] Furthermore, when the electric tail fin is initially powered on, the electric tail fin is controlled to sequentially fold horizontally, descend vertically, ascend vertically, and deploy horizontally, while the closing hard stop point Hmin, the deployment hard stop point Hmax, the descent hard stop point Vmin, and the ascent hard stop point Vmax are recorded.

[0015] Furthermore, based on the closed hard stop Hmin and the expanded hard stop Hmax, the closed soft stop Hclose and the expanded soft stop Hopen are obtained through the following relationship:

[0016] Hmax = Hmin + HΔt2;

[0017] Hclose = Hmin;

[0018] Hopen = Hmin + HΔt1;

[0019] HΔt1=HΔt2–HΔt3;

[0020] Where HΔt3 is a preset threshold.

[0021] Furthermore, based on the falling hard stop Vmin and the rising hard stop Vmax, the falling soft stop Vclose and the rising soft stop Vopen are obtained through the following relationship:

[0022] Vmax = Vmin + VΔt2;

[0023] Vclose = Vmin + VΔt3;

[0024] Vopen = Vclose + VΔt1;

[0025] VΔt1=VΔt2–VΔt3*2;

[0026] Wherein, VΔt3 is a preset threshold.

[0027] Furthermore, when the electric tail wing is deployed, the electric tail wing is first controlled to rise to a preset rise threshold, and then the electric tail wing is controlled to simultaneously deploy horizontally until the electric tail wing rises to the rise soft stop Vopen and deploys to the deployment soft stop Hopen.

[0028] Furthermore, when the electric tail wing is closed, the electric tail wing is first controlled to descend to a preset descent threshold, and then the electric tail wing is controlled to fold horizontally simultaneously until the electric tail wing descends to the soft stop Hclose and folds to the soft stop Vclose.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] The control method for the three-section electric rear wing described in this invention obtains the soft stop point Hclose when the electric rear wing is horizontally folded and the soft stop point Hopen when it is horizontally unfolded, as well as the soft stop point Vclose when the electric rear wing is vertically descending and the soft stop point Vopen when it is vertically ascending, through self-learning of the vertical and horizontal strokes of the electric rear wing. When controlling the opening or closing of the electric rear wing, the electric rear wing is horizontally folded and unfolded between the soft stop point Hclose and the soft stop point Hopen, and rises and falls between the soft stop point Vclose and the soft stop point Vopen. Thus, the stroke of the electric rear wing is no longer limited by the mechanical limit of the linkage mechanism, thereby reducing or avoiding wear on the linkage mechanism of the three-section electric rear wing, improving the durability of the electric rear wing, and enhancing the overall vehicle quality.

[0031] Furthermore, when the electric tail wing is deployed, it is first controlled to rise to a preset rise threshold before being controlled to horizontally deploy synchronously. Similarly, when the electric tail wing is closed, it is first controlled to descend to a preset descent threshold before being controlled to horizontally fold synchronously. This avoids the impact on the controller caused by the large instantaneous output power of the tail wing controller at the start of the tail wing's opening or closing. This reduces the probability of failure of the electric tail wing controller and minimizes the adverse effects on the normal use of the electric tail wing.

[0032] Another objective of this invention is to provide a control device for a three-section electric tail fin, the control device comprising a self-learning module and an opening / closing control module;

[0033] The self-learning module includes a recording module and a calculation module;

[0034] The recording module is used to control the electric tail fin to fold horizontally and unfold, as well as to descend and ascend vertically when the electric tail fin is initially powered on, and to record the closing hard stop point Hmin when the electric tail fin is folded horizontally, the unfolding hard stop point Hmax when the electric tail fin is unfolded horizontally, the descent hard stop point Vmin when the electric tail fin descends vertically, and the ascending hard stop point Vmax when the electric tail fin ascends vertically.

[0035] The calculation module is used to obtain the soft stop Hclose when the electric tail fin is horizontally folded and the soft stop Hopen when it is horizontally deployed, as well as the soft stop Vclose when the electric tail fin is vertically descending and the soft stop Vopen when it is vertically ascending, based on the hard stop Hmin when it is closed, the hard stop Hmax when it is deployed, the hard stop Vmin when it is descending and the soft stop Vopen when it is ascending.

[0036] The opening / closing control module is used to control the electric tail fin to open according to the rising soft stop Vopen and the deploying soft stop Hopen, or to control the electric tail fin to close according to the closing soft stop Hclose and the descending soft stop Vclose.

[0037] Furthermore, when the electric tail wing is deployed, the opening and closing control module first controls the electric tail wing to rise to a preset rising threshold, and then controls the electric tail wing to simultaneously deploy horizontally until the electric tail wing rises to the rising soft stop point Vopen and deploys to the deployment soft stop point Hopen.

[0038] When the electric tail wing is closed, the opening and closing control module first controls the electric tail wing to descend to a preset descent threshold, and then controls the electric tail wing to fold horizontally in sync until the electric tail wing descends to the closing soft stop Hclose and folds to the descent soft stop Vclose.

[0039] Furthermore, the present invention also proposes a computer-readable storage medium storing a computer program thereon, wherein when the computer program is executed by a processor, the control method for the three-segment electric tail fin described above is implemented.

[0040] In addition, the present invention also proposes a car equipped with a three-section electric rear wing, and the car is equipped with a control device for the three-section electric rear wing as described above.

[0041] The control device for the three-section electric rear wing, the computer-readable storage medium, and the beneficial effects of the automobile compared to the prior art described in this invention are the same as the control method for the three-section electric rear wing, and will not be repeated here. Attached Figure Description

[0042] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0043] Figure 1 This is a schematic diagram of the vertical stroke of the electric tail fin according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the horizontal travel of the electric tail fin according to an embodiment of the present invention;

[0045] Figure 3 This is a flowchart illustrating the process of recording the closing hard stop Hmin, the deployment hard stop Hmax, the descent hard stop Vmin, and the ascent hard stop Vmax during the self-learning of the electric tail wing according to an embodiment of the present invention.

[0046] Figure 4 This is a flowchart illustrating the electric tail wing deployment process according to an embodiment of the present invention;

[0047] Figure 5 This is a flowchart illustrating the closing process of the electric tail fin according to an embodiment of the present invention. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0049] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0051] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] Example 1

[0053] This embodiment relates to a control method for a three-segment electric tail wing, which can reduce or avoid wear on the linkage mechanism of the three-segment electric tail wing, improve the durability of the electric tail wing, and also avoid the large instantaneous output power of the tail wing controller at the start of the tail wing opening or closing, which would cause impact on the controller and reduce the impact on the use of the electric tail wing controller.

[0054] The three-section electric tail wing in this embodiment is consistent with the structure of existing three-section electric tail wing designs. The tail wing body consists of three wing panels, and its opening and closing are achieved through a motor and linkage mechanism. When the tail wing is closed, the left and right wing panels are horizontally joined together, with the middle wing panel located below the joined two wing panels, and the entire tail wing descends to a preset stowage position. When the tail wing is opened, it rises vertically, and as it rises, the wing panels on both sides simultaneously unfold horizontally to the left and right, ultimately joining with the middle wing panel to form the entire tail wing body. Once the entire tail wing is raised to its position, the opening is complete.

[0055] In terms of overall design, the control method of the three-segment electric tail wing in this embodiment includes self-learning of the vertical and horizontal strokes of the electric tail wing, as well as opening or closing the electric tail wing.

[0056] Specifically, the self-learning of the vertical and horizontal travel of the electric tail fin in this embodiment includes:

[0057] Step s1. When the electric tail fin is initially powered on, control the electric tail fin to fold horizontally and unfold, as well as to descend and ascend vertically, and record the closing hard stop point Hmin when the electric tail fin is folded horizontally, the unfolding hard stop point Hmax when it is unfolded horizontally, the descent hard stop point Vmin when the electric tail fin descends vertically, and the ascent hard stop point Vmax when it ascends vertically.

[0058] Step s2. Based on the closed hard stop Hmin, the deployed hard stop Hmax, the descending hard stop Vmin, and the ascending hard stop Vmax, obtain the closed soft stop Hclose when the electric tail fin is horizontally folded and the deployed soft stop Hopen when it is horizontally deployed, as well as the descending soft stop Vclose when the electric tail fin is vertically descending and the ascending soft stop Vopen when it is vertically ascending.

[0059] Specifically, in this electric tail fin design, the tail fin itself is driven by a motor through a linkage mechanism. The vertical lifting and lowering of the tail fin is achieved by a lifting drive motor and a lifting linkage mechanism, while the horizontal folding and unfolding of the tail fin is achieved by a horizontal drive motor and a horizontal drive linkage mechanism. Furthermore, the aforementioned lifting drive motor and lifting linkage mechanism, as well as the horizontal drive motor and horizontal drive linkage mechanism, can all utilize existing structures found in existing three-section electric tail fins; therefore, their structures will not be elaborated upon here.

[0060] Combination Figure 1 and Figure 2 As shown in this embodiment, since the tail fin body in the electric tail fin is driven to move vertically and fold horizontally and unfold horizontally through a corresponding linkage mechanism, from a mechanical structure perspective, the movement stroke of the tail fin body is limited by the linkage mechanism. That is, when the motor drives the linkage mechanism to move, in order to drive the tail fin body to move, when the linkage mechanism itself moves to contact the mechanical limiting structure on the tail fin base or other peripheral parts, the linkage mechanism cannot move further, thus restricting the movement of the linkage mechanism and the tail fin body, thereby indicating that the tail fin body has moved to the correct position.

[0061] Therefore, it can be understood that the closing hard stop point Hmin when the electric tail fin is horizontally folded is also the position of the linkage mechanism in the electric tail fin that drives the horizontal movement of the tail fin when it is horizontally folded, when it reaches the mechanical limiting structure. Similarly, the deployment hard stop point Hmax when the electric tail fin is horizontally deployed is also the position of the linkage mechanism in the electric tail fin that drives the horizontal movement of the tail fin when it is horizontally deployed, when it reaches the mechanical limiting structure. Likewise, the descent hard stop point Vmin when the electric tail fin is vertically descending is also the position of the linkage mechanism in the electric tail fin that drives the vertical movement of the tail fin when it is vertically descending, when it reaches the mechanical limiting structure. Finally, the ascending hard stop point Vmax when the electric tail fin is vertically ascending is also the position of the linkage mechanism in the electric tail fin that drives the vertical movement of the tail fin when it is vertically ascending, when it reaches the mechanical limiting structure.

[0062] Furthermore, as is well known, the contact between the linkage mechanism and the mechanical limiting structure inevitably leads to wear on the linkage mechanism, which affects the durability of the electric tail wing. Therefore, to reduce or even avoid wear during linkage mechanism movement, this embodiment, based on the aforementioned closed hard stop Hmin, deployed hard stop Hmax, descending hard stop Vmin, and ascending hard stop Vmax, sets a closed soft stop Hclose when the electric tail wing is horizontally folded and an deployed soft stop Hopen when horizontally deployed, as well as a descending soft stop Vclose when the electric tail wing descends vertically and an ascending soft stop Vopen when vertically ascending.

[0063] At this point, the actual travel range of the electric tail fin's horizontal movement is set from the closing soft stop Hclose to the deploying soft stop Hopen, and this range is smaller than the aforementioned mechanical limit travel, i.e., from the closing hard stop Hmin to the deploying hard stop Hmax. Simultaneously, the actual travel range of the electric tail fin's vertical movement is set from the descending soft stop Vclose to the ascending soft stop Vopen, and this range is also smaller than the aforementioned mechanical limit travel, i.e., from the descending hard stop Vmin to the ascending hard stop Vmax. This embodiment can prevent the linkage mechanism from contacting the corresponding mechanical limit structure, thereby reducing or even avoiding wear during linkage mechanism movement.

[0064] Furthermore, it should be noted that, considering factors such as the horizontal surface difference gap in the three-section electric tail fin, in the specific design, the closing soft stop Hclose and the closing hard stop Hmin of the electric tail fin's horizontal movement can be set at the same position. Therefore, the actual horizontal movement stroke of the electric tail fin, that is, from the closing soft stop Hclose to the deploying soft stop Hopen, can also be described as from the closing hard stop Hmin to the deploying soft stop Hopen.

[0065] Continue to combine Figure 3As shown, in the self-learning process, as a preferred embodiment, this embodiment further specifically controls the electric tail wing to perform horizontal folding, vertical descent, vertical ascent, and horizontal deployment sequentially when the electric tail wing is initially powered on, in order to record the above-mentioned closed hard stop Hmin, deployed hard stop Hmax, descent hard stop Vmin, and ascent hard stop Vmax.

[0066] Specifically, still combined Figure 1 and Figure 2 As shown, upon initial power-up of the electric tail wing, the tail wing controller controls the electric tail wing to fold horizontally. Upon detecting a stall in the horizontal drive motor, it records the position Hmin. Next, it controls the electric tail wing to descend vertically. Upon detecting a stall in the vertical drive motor, it records the position Vmin. Then, it controls the electric tail wing to ascend vertically. Upon detecting a stall in the vertical drive motor, it records the position Vmax. Next, it controls the electric tail wing to unfold horizontally. Upon detecting a stall in the horizontal drive motor, it records the position Hmax. Finally, the tail wing controller controls the electric tail wing to close, completing the learning process.

[0067] After recording the above positions, in this embodiment, based on the closed hard stop Hmin and the expanded hard stop Hmax, the closed soft stop Hclose and the expanded soft stop Hopen are also obtained through the following relationship:

[0068] Hmax = Hmin + HΔt2;

[0069] Hclose = Hmin;

[0070] Hopen = Hmin + HΔt1;

[0071] HΔt1=HΔt2–HΔt3;

[0072] HΔt3 is a preset threshold, specifically the distance the horizontally driven electric tail fin travels from its hard stop to its soft stop in the deployment direction. This value can be selected based on the specific design of the electric tail fin. HΔt2 is obtained during the self-learning process based on the recorded Hmax and Hmin, while HΔt1 can be calculated using the above relationships.

[0073] In this embodiment, similarly, based on the aforementioned falling hard stop Vmin and rising hard stop Vmax, the falling soft stop Vclose and rising soft stop Vopen are also obtained specifically through the following relationship:

[0074] Vmax = Vmin + VΔt2;

[0075] Vclose = Vmin + VΔt3;

[0076] Vopen = Vclose + VΔt1;

[0077] VΔt1=VΔt2–VΔt3*2;

[0078] Among them, VΔt3 is a preset threshold, specifically the distance the vertical electric tail fin retracts from the hard stop to the soft stop, which can be selected according to the specific design of the electric tail fin. VΔt2 can be obtained from the recorded Vmax and Vmin during the self-learning process, while VΔt1 can be calculated from the above relationship.

[0079] Through the self-learning process described above during initial power-on, this embodiment can obtain the actual stroke used to control the horizontal and vertical movement of the electric tail fin, so as to control the opening or closing of the electric tail fin.

[0080] And combined Figure 4 and Figure 5 As shown, the opening or closing of the electric tail wing in this embodiment specifically includes:

[0081] a. When the electric tail fin is deployed, control the electric tail fin to rise to the soft stop point Vopen in the vertical direction, and control the electric tail fin to deploy to the soft stop point Hopen in the horizontal direction.

[0082] b. When the electric tail fin is closed, control the electric tail fin to fold to the soft stop Hclose in the horizontal direction, and control the electric tail fin to descend to the soft stop Vclose in the vertical direction.

[0083] Specifically, when controlling the electric tail wing to open, upon receiving an opening command, the tail wing controller activates the vertical and horizontal drive motors, which, through relevant linkage mechanisms, drive the tail wing body to rise vertically and unfold horizontally. When controlling the electric tail wing to close, upon receiving a closing command, the tail wing controller activates the vertical and horizontal drive motors, which, through relevant linkage mechanisms, drive the tail wing body to descend vertically and fold horizontally.

[0084] In a preferred embodiment, when the electric tail wing is deployed, this embodiment first controls the electric tail wing to rise to a preset rise threshold, and then controls the electric tail wing to simultaneously deploy horizontally until the electric tail wing rises to the rise soft stop Vopen and simultaneously deploys to the deployment soft stop Hopen. Similarly, when the electric tail wing is closed, this embodiment can first control the electric tail wing to descend to a preset descent threshold, and then controls the electric tail wing to simultaneously fold horizontally until the electric tail wing descends to the closure soft stop Hclose and simultaneously folds to the descent soft stop Vclose.

[0085] In this way, by controlling the electric tail wing to rise to a preset rise threshold before horizontal deployment when it is deployed, and by controlling the electric tail wing to descend to a preset descent threshold before horizontal folding when it is closed, this embodiment avoids the impact on the tail wing controller caused by the large instantaneous output power at the start of tail wing deployment or closure. This reduces the probability of electric tail wing controller failure and minimizes the adverse effects on the normal use of the electric tail wing.

[0086] In practice, the aforementioned preset rise and fall thresholds can be set based on the structural parameters of the electric tail fin and simulation experiments. When the preset rise and fall thresholds are reached, the electric tail fin can be simultaneously moved into position in both the horizontal and vertical directions by adjusting the speeds of the horizontal and vertical drive motors.

[0087] The control method for the three-segment electric tail wing in this embodiment obtains the soft stop Hclose when the electric tail wing is horizontally folded and the soft stop Hopen when it is horizontally deployed, as well as the soft stop Vclose when the electric tail wing is vertically descending and the soft stop Vopen when it is vertically ascending, through self-learning of the vertical and horizontal strokes of the electric tail wing. When controlling the opening or closing of the electric tail wing, the electric tail wing is horizontally folded and deployed between the soft stop Hclose and the soft stop Hopen, and rises and falls between the soft stop Vclose and the soft stop Vopen.

[0088] Therefore, this embodiment eliminates the need for mechanical limiting of the electric rear wing's travel via a linkage mechanism, thus avoiding or reducing wear on the linkage mechanism of the three-section electric rear wing, improving the durability of the electric rear wing, and enhancing the overall vehicle performance. Simultaneously, by controlling the opening and closing motion of the electric rear wing, this embodiment also prevents excessive output power from the controller at the moment of wing activation, reducing the impact on the wing controller and demonstrating excellent practicality.

[0089] Example 2

[0090] This embodiment relates to a control device for a three-section electric tail fin, and the control device includes a self-learning module and an opening / closing control module.

[0091] The self-learning module specifically includes a recording module and a calculation module. Referring to the description in Embodiment 1, the recording module is used to control the electric tail fin to fold horizontally and unfold, and to descend and ascend vertically when the electric tail fin is initially powered on. It records the hard stop point Hmin when the electric tail fin is horizontally folded, the hard stop point Hmax when it is horizontally unfolded, the hard stop point Vmin when the electric tail fin descends vertically, and the hard stop point Vmax when it ascends vertically.

[0092] The aforementioned calculation module is used to obtain the soft stop Hclose when the electric tail fin is horizontally folded and the soft stop Hopen when it is horizontally deployed, as well as the soft stop Vclose when the electric tail fin is vertically descending and the soft stop Vopen when it is vertically ascending, based on the hard stop Hmin when it is closed, the hard stop Hmax when it is deployed, the hard stop Vmin when it is descending, and the soft stop Vopen when it is ascending.

[0093] The aforementioned opening and closing control module is used to control the electric tail wing to open based on the rising soft stop Vopen and the deploying soft stop Hopen, or to control the electric tail wing to close based on the closing soft stop Hclose and the descending soft stop Vclose.

[0094] Simultaneously, when the aforementioned opening and closing control module controls the vertical ascent, folding, or unfolding of the electric tail wing, preferably, in this embodiment, when the electric tail wing is open, the opening and closing control module first controls the electric tail wing to rise to a preset rising threshold, and then controls the electric tail wing to simultaneously unfold horizontally until the electric tail wing rises to the rising soft stop point Vopen and unfolds to the unfolding soft stop point Hopen. When the electric tail wing is closed, the opening and closing control module also first controls the electric tail wing to descend to a preset descending threshold, and then controls the electric tail wing to simultaneously fold horizontally until the electric tail wing descends to the closing soft stop point Hclose and folds to the descending soft stop point Vclose.

[0095] Thus, by controlling the electric tail wing to rise to a preset rise threshold and to descend to a preset descent threshold beforehand, this embodiment avoids the impact on the tail wing controller caused by the large instantaneous output power at the moment of tail wing opening or closing. This reduces the probability of electric tail wing controller failure and minimizes the adverse effects on the normal operation of the electric tail wing.

[0096] In this embodiment, both the self-learning module and the opening / closing control module can be based on existing automotive control modules with data storage, processing, and input / output functions. Preferably, the control module in this embodiment can be integrated into the body controller, or it can be set separately in the rear wing assembly of the vehicle to control the opening and closing of the three-section electric rear wing.

[0097] Example 3

[0098] This embodiment relates to a computer-readable storage medium storing a computer program, which, when executed by a processor, can implement the control method for the three-segment electric tail fin in Embodiment 1.

[0099] The computer-readable storage medium of this embodiment is generally exemplified by a memory. Furthermore, this computer-readable storage medium includes permanent and non-permanent, removable and non-removable media, and information storage can be achieved by any method or technology.

[0100] The aforementioned information may be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory, or other memory technologies, CD-ROM, digital versatile optical disc (DVD), or other optical storage, magnetic tape, magnetic magnetic disk storage, or other magnetic storage devices, or any other non-transfer medium that can be used to store information that can be accessed by a computing device.

[0101] In addition, this embodiment also relates to a car equipped with a three-section electric rear wing, and the car is also equipped with the control device for the three-section electric rear wing in Embodiment 2.

[0102] The car in this embodiment is equipped with a three-section electric rear wing, and the opening and closing of the electric rear wing is controlled by the above-mentioned control device. This can avoid or reduce wear on the linkage mechanism of the three-section electric rear wing, improve the durability of the electric rear wing, and at the same time avoid the controller output power being too large at the moment of wing activation, which can reduce the impact on the wing controller, thus having good practicality.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control method for a three-segment electric tail fin, characterized in that: The control method includes self-learning of the vertical and horizontal strokes of the electric tail fin, as well as opening or closing the electric tail fin. The self-learning of the vertical and horizontal travel of the electric tail fin includes: When the electric tail fin is initially powered on, the electric tail fin is controlled to fold and unfold horizontally, and to descend and ascend vertically. The closing hard stop point Hmin when the electric tail fin is folded horizontally, the unfolding hard stop point Hmax when it is unfolded horizontally, the descent hard stop point Vmin when the electric tail fin descends vertically, and the ascending hard stop point Vmax when it ascends vertically. Based on the closed hard stop point Hmin, the deployed hard stop point Hmax, the descending hard stop point Vmin, and the ascending hard stop point Vmax, the closed soft stop point Hclose and the deployed soft stop point Hopen when the electric tail fin is horizontally folded are obtained, as well as the descending soft stop point Vclose and the ascending soft stop point Vopen when the electric tail fin is vertically descending are obtained. The opening or closing of the electric tail fin includes: When the electric tail fin is deployed, it is controlled to rise to the rising soft stop Vopen in the vertical direction and to extend to the extending soft stop Hopen in the horizontal direction. When the electric tail fin is closed, it is controlled to fold to the closing soft stop Hclose in the horizontal direction and to descend to the descending soft stop Vclose in the vertical direction. When the electric tail wing is deployed, the electric tail wing is first controlled to rise to a preset rise threshold, and then the electric tail wing is controlled to simultaneously deploy horizontally until the electric tail wing rises to the rise soft stop Vopen and deploys to the deployment soft stop Hopen.

2. The control method for the three-section electric tail fin according to claim 1, characterized in that: When the electric tail fin is initially powered on, it is controlled to fold horizontally, descend vertically, ascend vertically, and deploy horizontally in sequence, and the closing hard stop Hmin, the deployment hard stop Hmax, the descent hard stop Vmin, and the ascent hard stop Vmax are recorded.

3. The control method for the three-section electric tail fin according to claim 2, characterized in that: Based on the closed hard stop Hmin and the expanded hard stop Hmax, the closed soft stop Hclose and the expanded soft stop Hopen are obtained through the following relationship: Hmax = Hmin + HΔt2; Hclose = Hmin; Hopen = Hmin + HΔt1; HΔt1 = HΔt2 –HΔt3; Wherein, HΔt3 is a preset threshold, HΔt2 is the distance from the closed hard stop to the deployed hard stop of the horizontal electric tail fin, and HΔt1 is the distance from the closed hard stop to the deployed soft stop of the horizontal electric tail fin.

4. The control method for the three-section electric tail fin according to claim 2, characterized in that: Based on the falling hard stop Vmin and the rising hard stop Vmax, the falling soft stop Vclose and the rising soft stop Vopen are obtained through the following relationship: Vmax = Vmin + VΔt2; Vclose = Vmin + VΔt3; Vopen = Vclose + VΔt1; VΔt1 = VΔt2 – VΔt3 × 2; Wherein, VΔt3 is a preset threshold, VΔt2 is the distance from the descent hard stop to the ascent hard stop of the vertical electric tail fin, and VΔt1 is the distance from the descent soft stop to the ascent soft stop of the vertical electric tail fin.

5. The control method for the three-section electric tail fin according to claim 1, characterized in that: When the electric tail wing is closed, the electric tail wing is first controlled to descend to a preset descent threshold, and then the electric tail wing is controlled to fold horizontally simultaneously until the electric tail wing descends to the soft stop Hclose and folds to the soft stop Vclose.

6. A control device for a three-section electric tail fin, characterized in that: The control device includes a self-learning module and an opening / closing control module; The self-learning module includes a recording module and a calculation module; The recording module is used to control the electric tail fin to fold horizontally and unfold, as well as to descend and ascend vertically when the electric tail fin is initially powered on, and to record the closing hard stop point Hmin when the electric tail fin is folded horizontally, the unfolding hard stop point Hmax when the electric tail fin is unfolded horizontally, the descent hard stop point Vmin when the electric tail fin descends vertically, and the ascending hard stop point Vmax when the electric tail fin ascends vertically. The calculation module is used to obtain the soft stop Hclose when the electric tail fin is horizontally folded and the soft stop Hopen when it is horizontally deployed, as well as the soft stop Vclose when the electric tail fin is vertically descending and the soft stop Vopen when it is vertically ascending, based on the hard stop Hmin when it is closed, the hard stop Hmax when it is deployed, the hard stop Vmin when it is descending and the soft stop Vopen when it is ascending. The opening and closing control module is used to control the electric tail fin to open according to the rising soft stop Vopen and the deploying soft stop Hopen, or to control the electric tail fin to close according to the closing soft stop Hclose and the descending soft stop Vclose. When the electric tail wing is deployed, the opening and closing control module first controls the electric tail wing to rise to a preset rising threshold, and then controls the electric tail wing to simultaneously deploy horizontally until the electric tail wing rises to the rising soft stop Vopen and simultaneously deploys to the deployment soft stop Hopen.

7. The control device for the three-section electric tail fin according to claim 6, characterized in that: When the electric tail wing is closed, the opening and closing control module first controls the electric tail wing to descend to a preset descent threshold, and then controls the electric tail wing to fold horizontally in sync until the electric tail wing descends to the closing soft stop Hclose and folds to the descent soft stop Vclose.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the control method for the three-segment electric tail fin as described in any one of claims 1-5.

9. A car, characterized in that: The vehicle is equipped with a three-section electric rear wing, and the vehicle is equipped with a control device for the three-section electric rear wing as described in claim 6 or 7.

Images