A multi-link driven adaptive headlight transmission device and its control method for automobiles

Abstract

This invention discloses a multi-bar driven adaptive headlight transmission device and its control method, relating to a vehicle adaptive lighting system. The device includes a multi-bar driven angle adjustment assembly, a headlight assembly, and a fail-safe rod. The multi-bar driven angle adjustment assembly comprises at least three sets of angle adjustment push rods. Each push rod includes a base, a movable end, and a drive mechanism that drives the movable end to move axially relative to the base. The push rods are circumferentially and evenly arranged around the headlight assembly, and their movable ends hinged to support the headlight assembly. The bases of the push rods are hinged and fixed in the same plane. This invention employs a multi-push rod parallel transmission structure, which greatly enhances mechanical strength and vibration resistance. There is no accumulated transmission error, resulting in high motion accuracy. Furthermore, if the motor of one push rod fails, the adaptive lighting function can be partially restored through motion compensation from other push rods. It also has a fault reset function.

Description

Technical Field

[0001] This invention relates to an adaptive lighting system for vehicles, specifically a multi-bar driven adaptive headlight transmission device and its control method. Background Technology

[0002] Most existing adaptive headlight systems only have a horizontal (left and right) cornering control function, which can only realize adaptive lighting for turning, but cannot realize adaptive lighting for uphill or downhill driving. For example, CN201310577269.1 discloses a novel adaptive headlight system for automobiles; CN201520594875.9 discloses an adaptive headlight system for cornering automobiles; and CN202111098536.8 discloses an intelligent headlight system for vehicles.

[0003] Even control theory analysis uses a two-way independent transmission mechanical structure, where the horizontal (left and right) turning angle is independently controlled by a horizontal motor, and the vertical (pitch) turning angle is independently controlled by a vertical motor. For example, the kinematic model and control method of the adaptive headlight system disclosed in CN200810151505.2. In this independent control mode of horizontal and vertical directions, the transmission is completed by two independent transmission structures. On the one hand, this transmission method has low mechanical strength and poor vibration stability during bumpy driving. On the other hand, if one transmission structure is damaged, the adaptive lighting function in that direction is completely lost, which is not conducive to maintaining the normal use of the headlights. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive headlight transmission device and its control method for automobiles. The multi-pushrod parallel transmission structure greatly enhances the mechanical strength and vibration resistance. At the same time, if one pushrod motor fails, the adaptive lighting function can still be partially maintained through the movement compensation of other pushrods. It also has a fault reset function, so that the vehicle can still maintain the normal lighting mode after the adaptive lighting system is severely damaged.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a multi-bar drive adaptive headlight transmission device for automobiles, including a multi-bar drive angle adjustment assembly, a headlight assembly, and a fail-safe bar, wherein... The multi-bar drive angle adjustment assembly includes at least three sets of angle adjustment push rods. Each angle adjustment push rod includes a base, a movable end, and a drive mechanism that drives the movable end to move axially relative to the base. The angle adjustment push rods are evenly arranged around the headlight assembly in the circumferential direction and hinged to support the headlight assembly through their movable ends. The bases of the angle adjustment push rods are hinged and fixed in the same plane. The fail-safe lever is positioned at the center of multiple sets of angle adjustment push rods and is used to pull the headlight assembly when all or part of the angle adjustment push rods fail, so that the headlight assembly returns to its position before being pushed by the angle adjustment push rods.

[0006] Furthermore, the drive mechanism includes an externally threaded lead screw, an internally threaded push rod, a housing, a motor, a reduction mechanism, and a clutch assembly; The internal thread push rod is fitted onto the external thread screw, and the outer shell surrounds and limits the internal thread push rod, so that when the external thread screw rotates, the internal thread push rod will move axially; the reduction mechanism is used to reduce the output of the motor and increase the torque to drive the external thread screw, and the clutch assembly is used to interrupt or maintain the linkage between the reduction mechanism and the external thread screw.

[0007] Furthermore, the deceleration mechanism is a planetary reducer.

[0008] Furthermore, the clutch assembly includes a clutch attraction flange, an electromagnetic clutch magnetic core, an electromagnetic clutch coil, and an elastic element; wherein, the electromagnetic clutch magnetic core is fixedly connected to the output end of the reduction mechanism by bolts, the clutch attraction flange is fixedly connected to the external threaded screw by threads, and the elastic element is disposed between the clutch attraction flange and the electromagnetic clutch magnetic core. When the electromagnetic clutch coil is energized, the clutch attraction flange and the electromagnetic clutch magnetic core overcome the resistance of the elastic element and are in an engaged state; when the electromagnetic clutch coil is de-energized, the clutch attraction flange and the electromagnetic clutch magnetic core are disengaged by the elastic element.

[0009] Furthermore, the elastic element is a wave spring, and the electromagnetic clutch magnetic core has a slide column that is inserted into the clutch attraction flange, with the wave spring sleeved on the slide column.

[0010] Furthermore, the planetary reducer includes a central gear, a planetary gear set, an upper connecting liner, a lower connecting liner, and planetary gear fixing bolts. The central gear is connected to the motor shaft for transmission. The planetary gear fixing bolts pass through the lower connecting liner, the planetary gear set, and the upper connecting liner in sequence and are locked by planetary gear fixing nuts so that the upper connecting liner rotates synchronously with the planetary gear set. The upper connecting liner is also connected to the clutch assembly by bolts.

[0011] Furthermore, the outer wall surface of the internally threaded push rod is provided with an anti-rotation guide groove, and the outer shell is provided with an anti-rotation rib in cooperation with the anti-rotation guide groove. The outer shell is fixedly connected to the base.

[0012] Furthermore, the failure protection rod is a pneumatic or hydraulic rod.

[0013] The present invention also provides a control method based on the aforementioned automotive adaptive headlight transmission device, which includes the following: A horizontal steering angle sensor is installed on the vehicle's steering column to transmit the measured horizontal steering angle to the control processing module for analysis and processing. A gyroscope is installed on the vehicle body to measure the vehicle's pitch angle information, and the measured vehicle pitch angle information is transmitted to the control processing module for analysis and processing. The control processing module calculates the extension and retraction parameters of each angle adjustment push rod in the multi-bar drive angle adjustment assembly in real time based on the vehicle's horizontal steering angle and pitch angle information, and sends control signals to control its motor to perform corresponding actions; The control processing module performs an operating status detection before controlling the motor to execute actions. When all motors are detected to be operating normally, control the motors to perform corresponding actions to adjust the extension and retraction of the angle adjustment push rod; When more than half of the motors are detected to be operating normally, the normally operating motors are controlled to perform actions, and the power transmission of the faulty motor is disconnected through the electromagnetic clutch. When half or more of the motors are detected to be operating abnormally, the control failure protection lever pulls the headlight assembly to reset.

[0014] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: This invention employs a multi-link angle adjustment assembly, in which multiple angle adjustment push rods simultaneously transmit torque, improving the mechanical strength and vibration resistance of the lighting assembly support structure. Furthermore, the multiple angle adjustment push rods operate in parallel, eliminating accumulated errors in motion. This results in higher motion precision than gear transmission, faster action response, and direct motor control of the electric cylinder (external threaded screw, internal threaded push rod, and housing).

[0015] This invention employs a multi-bar drive angle adjustment component, so the rotation of the headlights in the horizontal or vertical direction is no longer controlled by a single motor (drive source), but by multiple coupled motors. Even if one motor fails, it can still achieve partial steering function in the horizontal and vertical directions, improving the reliability and error correction capability of the device. Furthermore, because the multi-bar drive angle adjustment component has a large angle adjustment range, it can adapt to the needs of different vehicle models and there is no problem of incompatibility due to different vehicle models.

[0016] The present invention also includes a failure protection bar. When too many angle adjustment push rods malfunction, the ideal partial steering function cannot be achieved. Therefore, by disconnecting the clutch assembly, the headlight assembly can be pulled back to its original position from the failure protection bar at the center to maintain the headlight state.

[0017] Furthermore, this invention significantly reduces the number of parts in the transmission mechanism of conventional adaptive lighting systems, lowers costs, improves reliability, saves installation space for headlights, and further enhances lighting stability during vehicle travel. Attached Figure Description

[0018] 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 improper limitation of the invention.

[0019] Figure 1 This is a schematic diagram of the automotive adaptive headlight transmission device of the present invention.

[0020] Figure 2 This is a schematic diagram of the angle adjustment push rod in some embodiments.

[0021] Figure 3 These are cross-sectional views of the angle adjustment push rod in some embodiments.

[0022] Figure 4 These are exploded structural diagrams of the angle adjustment push rod in some embodiments.

[0023] Figure 5 These are structural diagrams of the deceleration mechanism in some embodiments.

[0024] Figure 6 These are schematic diagrams illustrating the motion state of the angle adjustment push rod in some embodiments.

[0025] Figure 7 This is a control flowchart of the vehicle lighting control method in this invention.

[0026] In the picture: 1. Angle adjustment push rod; 2. Headlight assembly; 3. Failure protection rod; 4. Fixed base; 8. Movable end; 11. Outer shell; 12. Anti-spinning ribs; 21. Internal thread push rod; 22. Anti-rotation guide groove; 31. External threaded screw; 32. Clutch engagement flange; 41. Wave spring; 42. Electromagnetic clutch magnetic core; 43. Electromagnetic clutch coil; 44. Magnetic core fixing bolt. 5. Upper connecting liner; 61. Reduction mechanism; 611. Central gear; 612. Planetary gear; 613. Planetary gear fixing bolt; 614. Planetary gear fixing nut; 615. Internal meshing fixing gear ring; 62. Reduction mechanism - housing fixing bolt; 63. Lower connecting liner. 71. Motor, 72. Base, 73. Motor fixing bolts. Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances. Detailed Implementation

[0033] like Figure 1As shown, an adaptive headlight transmission device for automobiles includes a multi-bar drive angle adjustment assembly, a headlight assembly 2, and a fail-safe bar 3, wherein... The multi-bar drive angle adjustment assembly includes at least three sets of angle adjustment push rods 1. Each angle adjustment push rod 1 includes a base 72, a movable end 8, and a drive mechanism that drives the movable end 8 to move axially relative to the base 72. The angle adjustment push rods 1 are evenly arranged around the vehicle lamp assembly 2 and are hinged to support the vehicle lamp assembly 2 through their movable ends 8. The base 72 of the angle adjustment push rod 1 is hinged and fixed in the same plane.

[0034] The multi-bar drive angle adjustment component in this invention belongs to a parallel transmission structure, with... Figure 1 Taking the three sets of angle adjustment push rods 1 as an example, the three sets of angle adjustment push rods 1 simultaneously transmit thrust to the headlight assembly 2, which improves the mechanical strength and vibration resistance stability of the support system.

[0035] The base 72 of the angle adjustment push rod 1 is hinged and fixed in the same plane, for example... Figure 1 The fixed base 4 shown helps the headlight assembly 2 maintain stability in a non-biased posture, and also makes it easier to adjust the stroke parameters of the angle adjustment push rod 1.

[0036] When the vehicle body turns or undulates, sensors can be used to identify the vehicle body's motion posture (pitch angle, horizontal steering angle), and then the control processing module can calculate the headlight illumination angle that matches the current posture, calculate the stroke of the three sets of angle adjustment push rods 1, thereby changing the illumination angle of the headlight assembly 2 to achieve an adaptive lighting effect.

[0037] To address the unavoidable issues of component failure and malfunction, this invention also includes a failure protection bar to ensure that the vehicle headlight assembly 2 maintains its basic lighting function under harsh operating conditions.

[0038] The failure protection rod 3 is located at the center of multiple sets of angle adjustment push rods 1 and is used to pull the headlight assembly 2 when all or most of the angle adjustment push rods 1 fail, so that the headlight assembly 2 returns to the posture before it was pushed by the angle adjustment push rods 1.

[0039] Because this invention uses angle-adjusting push rods to change the angle of the headlight assembly 2 by varying the stroke, pulling the fail-safe rod 3 located at the bottom center of the headlight assembly 2 allows each angle-adjusting rod to reset sequentially. If any angle-adjusting rod fails to reset, it means the headlight assembly 2 still has a deflection angle and room to be pulled. It is worth noting that in this invention, the fail-safe rod 3 is connected to the headlight assembly 2 and the fixed base 4 via a ball joint, while the angle-adjusting push rod 1 is connected to the headlight assembly 2 and the fixed base 4 via a conventional pivot hinge.

[0040] In some embodiments of the present invention, such as Figure 2 As shown, the drive mechanism includes an externally threaded lead screw 31, an internally threaded push rod 21, a housing 11, a motor 71, a reduction mechanism 61, and a clutch assembly; The internal thread push rod 21 is fitted onto the external thread screw 31, and the outer shell 11 surrounds and limits the internal thread push rod 21, so that when the external thread screw 31 rotates, the internal thread push rod 21 will move axially; the deceleration mechanism 61 is used to reduce the output of the motor 71 and increase the torque to drive the external thread screw 31; the clutch assembly is used to interrupt or maintain the linkage between the deceleration mechanism and the external thread screw.

[0041] More specifically, the outer wall of the internal thread push rod 21 is provided with an anti-rotation guide groove 22, and the outer shell 11 is provided with an anti-rotation rib 12 in conjunction with the anti-rotation guide groove 22. The outer shell 11 and the base 72 can be fixedly connected by connecting bolts.

[0042] like Figure 5 and Figure 6 As shown, the reduction mechanism 61 is a planetary reducer. Planetary reducers are widely used in the mechanical field due to their stable transmission, small size, and wide application. In this invention, it specifically includes a central gear 611 for inputting power to the motor, an internally meshing fixed gear ring 615, planetary gears 612 surrounding the central gear 611, an upper connecting liner 5, a lower connecting liner 63, and planetary gear fixing bolts 613. The central gear 611 is driven to rotate by the output shaft of the motor 71. The planetary gear fixing bolts 613 pass sequentially through the lower connecting liner 63, the planetary gears 612, and the upper connecting liner 5, and are locked by planetary gear fixing nuts 614 (the planetary gears 612 and the planetary gear fixing bolts 613 are in a sliding bearing relationship and can slide). Thus, the lower connecting liner 63 and the upper connecting liner 5 together form a planetary carrier, which serves as the output after reduction. The upper connecting liner 5 is connected to the clutch assembly by a magnetic core fixing bolt 44, thereby transmitting the reduced output to the clutch assembly. Figure 5 When the central gear 611 rotates clockwise, the planetary gear 612 rotates counterclockwise, and the upper connecting liner 5 (planetary carrier) rotates clockwise, the clutch assembly also rotates clockwise.

[0043] like Figure 3 and Figure 4As shown, the clutch assembly includes a clutch attraction flange 32, an electromagnetic clutch magnetic core 42, an electromagnetic clutch coil 43, and an elastic element 41. The electromagnetic clutch magnetic core 42 is fixedly connected to the output end of the reduction mechanism 61, i.e., the upper connecting liner 5, via a magnetic core fixing bolt 44. The clutch attraction flange 32 is threadedly connected to an external threaded screw 31. The elastic element 41 is disposed between the clutch attraction flange 32 and the electromagnetic clutch magnetic core 42. When the electromagnetic clutch coil is energized, the clutch attraction flange 32 and the electromagnetic clutch magnetic core 42 overcome the resistance of the elastic element 41 and are in an engaged state. When the electromagnetic clutch coil is disengaged, the clutch attraction flange 32 and the electromagnetic clutch magnetic core 42 are disengaged by the elastic element.

[0044] In such Figure 4 In the embodiment shown, the elastic element 41 is a wave spring, and the electromagnetic clutch magnetic core 42 has a slide post that is inserted into the clutch engagement flange. The wave spring is sleeved on the slide post to prevent the wave spring 41 from slipping out of the gap between the clutch engagement flange 32 and the electromagnetic clutch magnetic core 42.

[0045] refer to Figure 6 As shown, based on the function of the clutch assembly, when the clutch engagement flange 32 and the electromagnetic clutch magnetic core 42 are in an engaged linkage state, the output of the motor 71 causes the internal thread push rod 21 to slide axially. Thus, with the cooperation of multiple sets of angle adjustment push rods 1, the illumination angle of the headlight assembly 2 can be changed in real time in accordance with the vehicle body posture.

[0046] When the clutch assembly disengages, the internal thread push rod 21 is subjected to a downward pulling force from the failure protection rod 3 (see reference). Figure 3 (Direction), causing the external thread screw 31 to rotate while the internal thread push rod 21 resets.

[0047] In some embodiments of the present invention, the failure protection rod 3 is preferably a pneumatic rod or a hydraulic rod. Detailed Implementation

[0049] like Figure 7 As shown, taking the above-mentioned automotive adaptive headlight transmission device with three sets of angle adjustment push rods as an example, the present invention also provides a vehicle lighting control method, which includes the following: A horizontal steering angle sensor is installed on the vehicle's steering column to transmit the measured horizontal steering angle to the control processing module for analysis and processing. A gyroscope (pitch angle sensor) is installed on the vehicle body to measure the vehicle's pitch angle information, and the measured vehicle pitch angle information is transmitted to the control processing module for analysis and processing. The control processing module calculates the extension and retraction parameters of each angle adjustment push rod in the multi-bar drive angle adjustment assembly in real time based on the vehicle's horizontal steering angle and pitch angle information, and sends control signals to control its motor to perform corresponding actions; The control processing module performs an operating status detection before controlling the motor to execute actions. When all motors are detected to be operating normally, the control motors perform corresponding actions to adjust the extension and retraction of the angle adjustment push rod; enter the normal working mode, at which time the clutch assembly is fully engaged, the three motors rotate, and the headlight assembly reaches the preset angle to achieve adaptive lighting.

[0050] When more than half (two sets of angle adjustment push rods) of the motors are detected to be operating normally, the normally operating motors are controlled to perform actions, and the power transmission of the faulty motor is disconnected through the electromagnetic clutch, locking the faulty motor; enter the fault-tolerant compensation mode, the clutch assembly of the normally operating angle adjustment push rod is engaged, while the motor of the abnormal angle adjustment push rod is locked, and the two sets of angle adjustment push rods compensate by extending and retracting, which can partially adjust the angle of the headlight assembly and realize partial adaptive function.

[0051] When an abnormal operation of the motors of the three sets of angle adjustment push rods is detected, the control failure protection lever pulls the headlight assembly to reset. Entering the fault reset mode, the clutch components of each angle adjustment push rod are disengaged. Then, the failure protection lever retracts, pulling the headlight assembly to reset. After reset, the headlight assembly remains parallel to the fixed base, ensuring normal headlight illumination.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-link driven adaptive headlight transmission device for automobiles, characterized in that, This includes a multi-bar driven angle adjustment assembly, a headlight assembly, and a fail-safe bar; among which, The multi-bar driven angle adjustment assembly includes at least three sets of angle adjustment push rods. Each angle adjustment push rod includes a base, a movable end, and a drive mechanism that drives the movable end to move axially relative to the base. The angle adjustment push rods are evenly arranged around the headlight assembly in the circumferential direction and hinged to support the headlight assembly through their movable ends. The bases of the angle adjustment push rods are hinged and fixed in the same plane. The failure protection rod is located at the center of multiple sets of angle adjustment push rods and is used to pull the headlight assembly when all or most of the angle adjustment push rods fail, so as to reset the headlight assembly to the posture before it was pushed by the angle adjustment push rods. The drive mechanism includes an externally threaded lead screw, an internally threaded push rod, a housing, a motor, a reduction mechanism, and a clutch assembly; The internal thread push rod is fitted onto the external thread screw, and the outer shell surrounds and limits the internal thread push rod, so that when the external thread screw rotates, the internal thread push rod will move axially; the reduction mechanism is used to reduce the high-speed rotation of the motor and increase the torque to drive the external thread screw; the clutch assembly is used to interrupt or maintain the linkage between the reduction mechanism and the external thread screw. The deceleration mechanism is a planetary reducer; The clutch assembly includes a clutch engagement flange, an electromagnetic clutch magnetic core, an electromagnetic clutch coil, and an elastic element. The electromagnetic clutch magnetic core is bolted to the output end of the reduction mechanism, and the clutch engagement flange is threaded to an external threaded screw. The elastic element is positioned between the clutch engagement flange and the electromagnetic clutch magnetic core. When the electromagnetic clutch coil is energized, the clutch engagement flange and the electromagnetic clutch magnetic core overcome the resistance of the elastic element and are engaged. When the electromagnetic clutch coil is de-energized, the clutch engagement flange and the electromagnetic clutch magnetic core are disengaged by the elastic element.

2. The automotive adaptive headlight transmission device according to claim 1, characterized in that, The elastic element is a wave spring, and the electromagnetic clutch magnetic core has a sliding column that is inserted into the clutch attraction flange, with the wave spring sleeved on the sliding column.

3. The automotive adaptive headlight transmission device according to claim 1, characterized in that, The planetary reducer includes a central gear, a planetary gear set, an upper connecting liner, a lower connecting liner, and planetary gear fixing bolts. The central gear is connected to the motor shaft for transmission. The planetary gear fixing bolts pass through the lower connecting liner, the planetary gear set, and the upper connecting liner in sequence and are locked by planetary gear fixing nuts so that the upper connecting liner rotates synchronously with the planetary gear set. The upper connecting liner is also connected to the clutch assembly by bolts.

4. The automotive adaptive headlight transmission device according to claim 1, characterized in that, The outer wall of the internally threaded push rod is provided with an anti-rotation guide groove, and the outer shell is provided with an anti-rotation rib in conjunction with the anti-rotation guide groove. The outer shell is fixedly connected to the base.

5. The automotive adaptive headlight transmission device according to claim 1, characterized in that, The failure protection rod is a pneumatic or hydraulic rod.

6. A control method for an automotive adaptive headlight transmission device according to any one of claims 1-5, characterized in that, Including the following: A horizontal steering angle sensor is installed on the vehicle's steering column to transmit the measured horizontal steering angle to the control processing module for analysis and processing. A gyroscope is installed on the vehicle body to measure the vehicle's pitch angle information, and the measured vehicle pitch angle information is transmitted to the control processing module for analysis and processing. The control processing module calculates the extension and retraction parameters of each angle adjustment push rod in the multi-bar drive angle adjustment assembly in real time based on the vehicle's horizontal steering angle and pitch angle information, and sends control signals to control its motor to perform corresponding actions; The control processing module performs an operating status detection before controlling the motor to execute actions. When all motors are detected to be operating normally, control the motors to perform corresponding actions to adjust the angle, and adjust the extension and retraction of the push rod. When more than half of the motors are detected to be operating normally, the normally operating motors are controlled to perform actions, and the power transmission of the faulty motor is disconnected through the electromagnetic clutch. When half or more of the motors are detected to be operating abnormally, the control failure protection lever pulls the headlight assembly to reset.

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