Accelerator pedal control device, accelerator pedal control method and vehicle

Abstract

The embodiment of the invention discloses an accelerator pedal control device, an accelerator pedal control method and a vehicle. The accelerator pedal control device comprises a driving module and an execution module. The execution module comprises a fixing plate and an accelerator pedal; the driving module is connected with the execution module and used for driving the fixing plate to move; and the accelerator pedal is arranged on the fixing plate, and the movement of the fixing plate drives the accelerator pedal to move. According to the accelerator pedal control device disclosed by the embodiment of the invention, the driving module drives the fixed plate in the execution module to move, so that the accelerator pedal is accurately driven through the movement of the fixed plate, and a required accelerator pedal movement track can be accurately reproduced with high repeatability in an NVH (Noise Vibration and Harshness) test; therefore, a test means with high data reliability and high repeatability is provided for development of the NVH performance of the whole vehicle.

Description

Technical Field

[0001] This application belongs to the field of vehicle control, specifically relating to an accelerator pedal control device, an accelerator pedal control method, and a vehicle. Background Technology

[0002] During NVH (Noise, Vibration, Harshness) testing, it is necessary to collect and analyze noise and vibration data under various vehicle operating conditions, such as idling, constant speed, rapid acceleration, and slow acceleration. These different operating conditions require different accelerator pedal openings. However, even experienced drivers cannot guarantee the consistency of accelerator pedal movement in every test. Usually, multiple measurements are required, and data with better consistency are selected. This results in poor experimental accuracy and requires a lot of time.

[0003] Therefore, in the NVH test, how to achieve precise and repeatable control of the accelerator pedal is crucial to ensuring the validity and reliability of the experimental data. Summary of the Invention

[0004] The purpose of this application is to provide an accelerator pedal control device, accelerator pedal control method, and vehicle that can solve the problem that manual operation cannot achieve precise and repeatable control of the accelerator pedal movement.

[0005] In a first aspect, embodiments of this application provide an accelerator pedal control device, characterized in that the device includes: a drive module and an execution module; the execution module includes a fixed plate and an accelerator pedal; The drive module is connected to the execution module and is used to drive the fixed plate to move; The accelerator pedal is mounted on the fixed plate, and the movement of the fixed plate drives the accelerator pedal to move.

[0006] Optionally, the execution module further includes: a fixing plate bolt, a rotating gear, and a motion push rod; the fixing plate includes: an upper fixing plate and a lower fixing plate located below the upper fixing plate; The rotating gear meshes with the moving push rod and is used to drive the moving push rod to move; The upper fixed plate is connected to the moving push rod; The motion push rod is used to drive the fixed plate to move; The fixing plate bolts are located at both ends of the upper fixing plate and the lower fixing plate, and are used to fix the accelerator pedal in the middle of the upper fixing plate and the lower fixing plate.

[0007] Optionally, the drive module includes: a motor, a motor mounting housing, and a sound insulation element; The motor is connected to the rotating gear and is used to drive the rotating gear to rotate; The motor is located inside the motor mounting housing, and the sound insulation element is disposed in the gap between the motor and the motor mounting housing to isolate the motor vibration noise caused when the motor is working.

[0008] Optionally, the device further includes an L-shaped bracket, and the actuation module further includes: a pedal mounting housing and a support spring; The rotary gear, the motion push rod, the fixed plate, and the accelerator pedal are disposed inside the pedal mounting housing; The support spring is disposed at the bottom of the lower fixed plate, and one end of the support spring is connected to the lower fixed plate, and the other end is connected to the pedal mounting shell, for supporting the fixed plate; The L-shaped bracket is connected at one end to the motor mounting housing and at the other end to the pedal mounting housing, and is used to fix the motor mounting housing.

[0009] Optionally, the drive module further includes: a first elastic element and a second elastic element; The first elastic element has one end connected to the upper part of the inner wall of the motor mounting housing, and the other end connected to the top of the motor; The second elastic element has one end connected to the lower part of the inner wall of the motor mounting housing, and the other end connected to the bottom of the motor.

[0010] Optionally, the motion push rod is provided with a toothed structure that meshes with the rotating gear.

[0011] Optionally, the device further includes: a motor connecting rod; The motor connecting rod is connected to the motor at one end and to the rotating gear at the other end, and is used to drive the rotating gear to rotate when the motor is working.

[0012] Optionally, the execution module further includes: a sliding plate groove; The fixed plate is disposed inside the sliding plate groove, and the sliding plate groove is provided with a vertically extending guide rail, along which the fixed plate moves.

[0013] Secondly, embodiments of this application provide an accelerator pedal control method, applied to the accelerator pedal control device as described in the first aspect, the method comprising: Obtain the pedal parameters and time curves for the test condition; Convert the pedal parameters and time curves into corresponding voltage and time curves; Based on the voltage-time curve, voltage is output to the motor.

[0014] Thirdly, embodiments of this application provide a vehicle including the accelerator pedal control device as described in the first aspect.

[0015] In this embodiment, the accelerator pedal control device includes a drive module and an execution module. The execution module includes a fixed plate and an accelerator pedal. The drive module is connected to the execution module and is used to drive the fixed plate to move. The accelerator pedal is disposed on the fixed plate, and the movement of the fixed plate drives the movement of the accelerator pedal. The accelerator pedal control device in this embodiment drives the movement of the fixed plate in the execution module through the drive module, thereby precisely driving the movement state of the accelerator pedal through the movement of the fixed plate. This ensures that the accelerator pedal movement trajectory is the same in each data acquisition stage, replacing manual control of the accelerator pedal. This completely eliminates random errors caused by manual operation and accurately reproduces the required accelerator pedal movement trajectory with high repeatability in NVH testing. Therefore, it provides a highly reliable and repeatable testing method for vehicle NVH performance development. While ensuring high consistency of data under specific operating conditions in vehicle NVH performance development, it significantly improves development efficiency and reduces human and material costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an accelerator pedal control device provided in an embodiment of this application; Figure 2 This is a front view of an accelerator pedal control device provided in an embodiment of this application; Figure 3 This is a left view of an accelerator pedal control device provided in an embodiment of this application; Figure 4 This is a top view of an accelerator pedal device provided in an embodiment of this application; Figure 5 This is a schematic diagram of a motor connection provided in an embodiment of this application; Figure 6 This is a flowchart illustrating the steps of an accelerator pedal control method provided in an embodiment of this application; Figure 7 This is a schematic diagram of a vehicle accelerator pedal provided in an embodiment of this application; Figure 8 This is a schematic diagram of a signal conversion for an accelerator pedal provided in an embodiment of this application; Figure 9 This is a schematic diagram of motor control provided in an embodiment of this application; Explanation of reference numerals in the attached drawings: 100, drive module; 200, execution module; 1, fixing plate; 101, upper fixing plate; 102, lower fixing plate; 2, accelerator pedal; 3, fixing plate bolt; 4, rotating gear; 5, motion push rod; 6, motor; 7, motor mounting housing; 8, sound insulation element; 9, L-shaped bracket; 10, pedal mounting housing; 11, support spring; 12, first elastic element; 13, second elastic element; 14, motor connecting rod; 15, rotating bearing; 16, sliding plate groove. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] The accelerator pedal control device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0020] Reference Figure 1 This is a schematic diagram of the structure of an accelerator pedal control device provided in an embodiment of this application, specifically including: a drive module 100 and an execution module 200; the execution module 200 includes a fixing plate 1 and an accelerator pedal 2; In this embodiment, the accelerator pedal control device can be divided into two parts, specifically including a drive module 100 and an execution module 200, wherein the execution module 200 includes a fixed plate 1 and an accelerator pedal 2.

[0021] Specifically, the drive module 100 serves as the power source for the entire device, while the execution module 200 acts as the final action output mechanism. The drive module 100 directly acts on the execution module 200 to precisely drive the entire execution module 200 to produce a preset, consistent motion.

[0022] Reference Figure 2 This is a front view of an accelerator pedal control device provided in an embodiment of this application. (Refer to...) Figure 3This is a left view of an accelerator pedal control device provided in an embodiment of this application. (Refer to...) Figure 4 This is a top view of an accelerator pedal control device provided in an embodiment of this application. (Refer to...) Figure 5 This is a schematic diagram of a motor connection provided in an embodiment of this application.

[0023] The drive module 100 is connected to the execution module 200 and is used to drive the fixed plate 1 to move. like Figure 1 As shown, the drive module 100 is connected to the execution module 200. The driving force output by the drive module 100 is used as the input of the execution module 200. When the drive module 100 acts on the execution module 200, the driving force provided will be converted into the linear thrust required to drive the fixed plate 1 to move.

[0024] The accelerator pedal 2 is mounted on the fixed plate 1, and the movement of the fixed plate 1 drives the accelerator pedal 2 to move.

[0025] In the embodiments of this application, such as Figure 2 As shown, the main function of the fixing plate 1 is to fix the accelerator pedal 2. During the NVH test, the accelerator pedal 2 is set on the fixing plate 1 so that it can move together with the fixing plate 1 to achieve precise pitch angle control.

[0026] The accelerator pedal control device in this embodiment drives the movement of the fixed plate 1 in the execution module 200 through the drive module 100, so as to accurately drive the movement state of the accelerator pedal 2 through the movement of the fixed plate 1, ensuring that the movement trajectory of the accelerator pedal 2 is the same in each data acquisition stage. It replaces manual control of the accelerator pedal 2, which can completely eliminate random errors caused by manual operation. In NVH testing, it can accurately reproduce the required movement trajectory of the accelerator pedal 2 with high repeatability, thereby providing a testing method with high data reliability and strong repeatability for the development of vehicle NVH performance. While ensuring high consistency of data under specific working conditions in the development of vehicle NVH performance, it greatly improves development efficiency and reduces human and material costs.

[0027] In one embodiment of this application, the execution module 200 further includes: a fixing plate bolt 3, a rotating gear 4, and a motion push rod 5; the fixing plate 1 includes: an upper fixing plate 101 and a lower fixing plate 102 located below the upper fixing plate 101; The rotating gear 4 meshes with the moving push rod 5 and is used to drive the moving push rod 5 to move; The upper fixing plate 101 is connected to the motion push rod 5; The motion push rod 5 is used to drive the fixed plate 1 to move; The fixing plate bolts 3 are located at both ends of the upper fixing plate 101 and the lower fixing plate 102, and are used to fix the accelerator pedal 2 in the middle of the upper fixing plate 101 and the lower fixing plate 102.

[0028] In the embodiments of this application, such as Figure 2 As shown, the rotating gear 4 meshes with the moving push rod 5 to drive the moving push rod 5 to move. Meshing refers to a mechanical transmission relationship that converts rotational motion into linear motion. The rotating gear 4 acts as a driving component, and its rotational motion is applied to the moving push rod 5 through direct or indirect mechanical connection.

[0029] As an example, it can be set that when the rotating gear 4 rotates clockwise, it drives the motion push rod 5 to move upward, and when the rotating gear 4 rotates counterclockwise, it drives the motion push rod 5 to move downward. It should be noted that the relative mounting positions of the rotating gear 4 and the motion push rod 5 determine the direction of movement, but this application does not limit this.

[0030] In this embodiment of the application, the fixing plate bolt 3 belongs to the execution module 200, such as Figure 2 As shown, the fixing plate 1 consists of two parallel and aligned upper fixing plate 101 and lower fixing plate 102. The lower fixing plate 102 can be located below the upper fixing plate 101. The fixing plate bolts 3 are provided in the corresponding mounting holes at both ends of the upper fixing plate 101 and the lower fixing plate 102 and are locked with nuts to clamp and fix the upper fixing plate 101, the lower fixing plate 102 and the accelerator pedal 2 sandwiched between them into a rigid moving whole. It can be understood that the fixing plate 1 and the fixing plate bolts 3 jointly undertake the function of fixing the accelerator pedal 2.

[0031] Specifically, the upper fixed plate 101, as the direct force-bearing component, is rigidly connected at its top to the end of the motion push rod 5, thereby converting the linear thrust generated by the motion push rod 5 into its own up-and-down movement. The fixing plate bolt 3 passes through the mounting holes at both ends of the upper fixed plate 101 and the lower fixed plate 102, and generates clamping force by tightening the nut, thus firmly clamping the base of the accelerator pedal 2 between the two plates like a clamp, forming a rigid connection. This allows the linear movement of the motion push rod 5 to be transmitted to the accelerator pedal 2 without loss.

[0032] In the embodiments of this application, such as Figure 2 As shown, the motion push rod 5 is connected to the upper fixed plate 101 so that the linear thrust of the motion push rod 5 itself is transmitted to the fixed plate 1 through the upper fixed plate 101, and the fixed plate 1 is guided and constrained to move along a precise vertical trajectory.

[0033] The embodiments of this application, through the rigid connection between the motion push rod 5 and the upper fixed plate 101, and the clamping design of the upper fixed plate 101 and the lower fixed plate 102 for the accelerator pedal 2, can ensure that there is no looseness or displacement delay between the accelerator pedal 2 and the drive mechanism. This is beneficial for the acquisition of NVH data under specific working conditions in the development of vehicle NVH performance. While maintaining data consistency, it can also reduce the manpower and material costs in the development process.

[0034] In one embodiment of this application, the drive module 100 includes: a motor 6, a motor mounting housing 7, and a sound insulation element 8; The motor 6 is connected to the rotating gear 4 and is used to drive the rotating gear 4 to rotate; The motor 6 is located inside the motor mounting housing 7, and the sound insulation element 8 is disposed in the gap between the motor 6 and the motor mounting housing 7 to isolate the vibration sound of the motor 6 when it is working.

[0035] In this embodiment, the motor 6, the motor mounting housing 7, and the sound insulation element 8 belong to the drive module 100, such as... Figure 5 As shown, motor 6 is a power source, which is connected to rotating gear 4 to drive rotating gear 4 to rotate. Specifically, when motor 6 is running, rotating gear 4 will also rotate accordingly.

[0036] As an example, it can be set that when motor 6 rotates forward, rotating gear 4 rotates forward, and when motor 6 rotates in reverse, rotating gear 4 rotates in reverse. Similarly, it can also be set that when motor 6 rotates forward, rotating gear 4 rotates in reverse, and when motor 6 rotates in reverse, rotating gear 4 rotates forward. It should be noted that the embodiments of this application do not limit the correspondence between the forward and reverse rotation of motor 6 and the forward and reverse rotation of rotating gear 4.

[0037] like Figure 5 As shown, the sound insulation element 8 is disposed between the exterior of the motor 6 and the inner wall of the motor mounting housing 7 to fill and isolate the gap between the motor 6 and the mounting housing, thereby cutting off the vibration transmission path and isolating the vibration noise caused by the motor 6 during operation. The sound insulation element 8 refers to an elastic damping component used to isolate vibration and absorb noise, including but not limited to sound insulation cotton and sound insulation blocks. Specifically, the sound insulation element 8 is made of a high-damping elastic material (such as rubber or polyurethane). On the one hand, it can absorb and isolate the small high-frequency vibrations generated when the motor 6 is running, minimizing the noise radiation from the motor 6 into the vehicle interior. On the other hand, it can block these vibrations from propagating outward through the rigid structure (motor mounting housing 7), thereby effectively suppressing the interference of the motor 6's operating noise on the vehicle's NVH test data and reducing the additional noise caused by the motor 6 during operation.

[0038] This embodiment of the application adds a sound insulation element 8 and combines it with the motor mounting housing 7 to form a sound insulation barrier, which can significantly reduce the vibration and noise of the drive module 100 itself from the source of noise. This is beneficial for collecting purer data that better reflects the true state of the vehicle in the development of the vehicle's NVH performance. While improving the effectiveness of the data, it avoids repeated tests caused by interference from the test equipment itself, thereby saving development costs.

[0039] In one embodiment of this application, the device further includes an L-shaped bracket 9, and the execution module 200 further includes a pedal mounting shell 10 and a support spring 11; The rotating gear 4, the moving push rod 5, the fixed plate 1, and the accelerator pedal 2 are disposed inside the pedal mounting shell 10; The support spring 11 is disposed at the bottom of the lower fixed plate 102, and one end of the support spring 11 is connected to the lower fixed plate 102, and the other end is connected to the pedal mounting shell 10, for supporting the fixed plate 1; The L-shaped bracket 9 is connected at one end to the motor mounting housing 7 and at the other end to the pedal mounting housing 10, and is used to fix the motor mounting housing 7.

[0040] In this embodiment, the pedal mounting shell 10 and the support spring 11 belong to the execution module 200, such as... Figure 2 As shown, the rotating gear 4, the moving push rod 5, the fixed plate 1, and the accelerator pedal 2 are located inside the pedal mounting housing 10. The support spring 11 is located at the bottom of the lower fixed plate 102, that is, below the pedal mounting housing 10, with one end connected to the lower fixed plate 102 and the other end connected to the pedal mounting housing 10, for supporting the fixed plate 1. Figure 5 As shown, one end of the L-shaped bracket 9 is connected to the motor mounting housing 7, and the other end is connected to the pedal mounting housing 10, for fixing the motor mounting housing 7.

[0041] Specifically, the support spring 11 serves two main purposes: first, to support the fixed plate 1 in the non-working state; and second, to provide damping during operation, absorbing and reducing vibrations generated during structural component movement, thus minimizing the impact of internal structural component movement on the accelerator pedal 2. The L-shaped bracket 9 provides a stable mounting base for the entire drive module 100, ensuring precise alignment between the motor 6 and the rotating gear 4, while also isolating the weight and vibration of the drive module 100 from the pedal mounting housing 10, preventing interference with the motion accuracy of the actuator module 200.

[0042] This embodiment of the application, through the damping and support design of the support spring 11 and the stabilizing isolation effect of the L-shaped bracket 9, can ensure that the movement of the accelerator pedal 2 only responds to the programmed drive commands and is not affected by internal vibration and external interference. This is beneficial for collecting high signal-to-noise ratio NVH data in the development of vehicle NVH performance. While ensuring data accuracy, it also improves the reliability of the equipment and reduces maintenance costs.

[0043] In one embodiment of this application, the driving module 100 further includes: a first elastic element 12 and a second elastic element 13; The first elastic element 12 is connected at one end to the upper part of the inner wall of the motor mounting housing 7 and at the other end to the top of the motor 6; The second elastic element 13 is connected at one end to the lower part of the inner wall of the motor mounting housing 7, and at the other end to the bottom of the motor 6.

[0044] In this embodiment of the application, the first elastic element 12 and the second elastic element 13 belong to the driving module 100, such as... Figure 5 As shown, the first elastic element 12 and the second elastic element 13 are disposed at the mounting point between the motor 6 and the motor mounting housing 7 to achieve an elastic connection between the two. Specifically, one end of the first elastic element 12 is connected to the upper part of the inner wall of the motor mounting housing 7, and the other end is connected to the top of the motor 6. Conversely, the second elastic element 13 is disposed relative to the position of the first elastic element 12, that is, one end of the second elastic element 13 is connected to the lower part of the inner wall of the motor mounting housing 7, and the other end is connected to the bottom of the motor 6.

[0045] As an example, the first elastic element 12 and the second elastic element 13 can be small rubber suspensions made of high-damping rubber material. Specifically, the motor 6 is fixed in the motor mounting housing 7 by the upper and lower small rubber suspensions (the first elastic element 12 and the second elastic element 13). The main function of the small rubber suspensions is to isolate the vibration of the motor 6 when it is working, and to prevent the vibration of the motor 6 body from being transmitted to the accelerator pedal 2 through various rods, thus affecting the movement state of the accelerator pedal 2. This ensures that the vibration of the drive source is limited to the drive module 100 to the maximum extent, reducing the impact on the experimental results.

[0046] In this embodiment, by setting a first elastic element 12 and a second elastic element 13 (such as a small rubber suspension) between the motor 6 and the motor mounting housing 7, the high-frequency vibration of the motor 6 can be effectively isolated and absorbed from the vibration source, preventing it from contaminating the subsequent NVH test data. This ensures the purity and accuracy of the accelerator pedal 2 movement state and the final collected data, and improves the reliability of the experiment.

[0047] In one embodiment of this application, the motion push rod 5 is provided with a toothed structure that meshes with the rotating gear 4.

[0048] In the embodiments of this application, such as Figure 2 As shown, the middle part of the motion push rod 5 is a toothed structure, which directly meshes with the teeth of the rotating gear 4, thereby accurately and efficiently converting the rotational motion of the rotating gear 4 into the linear motion of the motion push rod 5.

[0049] In this embodiment, by setting a toothed structure on the motion push rod 5 to mesh with the rotating gear 4, the rotational power of the motor 6 can be converted into precise linear displacement with minimal backlash and slippage. This ensures a high degree of consistency between the motion trajectory of the accelerator pedal 2 and the preset control command, which is beneficial for collecting highly repeatable NVH data in the development of vehicle NVH performance.

[0050] In one embodiment of this application, the device further includes: a motor connecting rod 14; The motor connecting rod 14 is connected to the motor 6 at one end and to the rotating gear 4 at the other end, and is used to drive the rotating gear 4 to rotate when the motor 6 is working.

[0051] In this embodiment, the motor connecting rod 14 is a power transmission and interface component between the drive module 100 and the execution module 200, such as... Figure 5 As shown, the motor connecting rod 14 serves as a power transmission shaft. One end of it is fixedly connected to the output shaft of the motor 6 via a coupling or keyway, and the other end passes through the rotary bearing 15 and is fixedly connected to the rotary gear 4. Figure 3 As shown, the outer ring of the rotary bearing 15 is fixed to the pedal mounting shell 10, and the inner ring is interference-fitted with the motor connecting rod 14. Its function is to support the rod body, reduce frictional resistance, and provide a stable rotation center for the rotation of the connecting rod.

[0052] Specifically, when the motor 6 starts, its output torque is directly transmitted to the motor connecting rod 14, causing it to rotate. The rotational motion of the motor connecting rod 14 is smoothly and with low loss transmitted to the end rotating gear 4 through the support and guidance of the rotating bearing 15, thereby driving the rotating gear 4 to rotate synchronously. This design efficiently transmits the power output of the motor 6 to the transmission system, while ensuring the concentricity and stability of the power transmission shaft (motor connecting rod 14) under high-speed rotation, avoiding problems such as unstable transmission, increased noise, and reduced lifespan caused by shaft wobbling or uneven wear.

[0053] This application embodiment introduces a transmission scheme with motor connecting rod 14, which can construct a power transmission path with good rigidity, high efficiency and smooth operation. This ensures that the entire drive chain from motor 6 to accelerator pedal 2 can accurately and reliably execute preset motion commands, which is beneficial to obtaining highly consistent test data in the development of vehicle NVH performance and improving the service life and reliability of the accelerator pedal 2 control device itself.

[0054] In one embodiment of this application, the execution module 200 further includes: a sliding plate groove 16; The fixed plate 1 is disposed inside the sliding plate groove 16, the sliding plate groove 16 is provided with a vertically extending guide rail, and the fixed plate 1 moves along the guide rail.

[0055] In this embodiment of the application, the sliding plate groove 16 belongs to the drive module 100, such as Figure 3 As shown, the sliding plate groove 16 is fixedly installed inside the pedal mounting housing 10. Its groove body is precisely matched with the side of the fixed plate 1. A guide rail extending vertically relative to the fixed plate 1 is provided in the groove, so that the fixed plate 1 can move axially along the guide rail in the sliding plate groove 16. Axial movement refers to linear movement in a single direction (i.e., the direction of pressing down and returning the accelerator pedal 2).

[0056] Specifically, the sliding plate groove 16 contacts both sides of the fixed plate 1 through its inner precision guide surface, forming a highly rigid relative motion relationship. On the one hand, it provides a precise guide track for the reciprocating motion of the fixed plate 1, effectively preventing it from deflecting, jamming, or disengaging from the rotating gear 4 during the motion. On the other hand, it ensures that the driving force generated by the motion push rod 5 is fully used to drive the rotation of the accelerator pedal 2, without the loss of force or distortion of the motion trajectory caused by the shaking or offset of the fixed plate 1, thereby ensuring the absolute accuracy and repeatability of the motion direction and stroke of the accelerator pedal 2.

[0057] This embodiment of the application introduces a high-precision guiding structure, the sliding plate groove 16, which can completely eliminate the uncertainty and degree of freedom of the execution module 200 during the movement process, ensuring that every movement of the accelerator pedal 2 strictly follows the preset straight trajectory, thereby providing highly consistent and interference-free operating condition input for the development of vehicle NVH performance, and greatly improving the accuracy and reliability of test data.

[0058] This application also provides an accelerator pedal control method, applied to the above-mentioned accelerator pedal control device, with reference to... Figure 6 This is a flowchart illustrating the steps of an accelerator pedal control method provided in an embodiment of this application, specifically including the following steps: Step 601: Obtain the pedal parameters and time curve for the test condition; Step 602: Convert the pedal parameters and time curve into corresponding voltage and time curves; Step 603: Based on the voltage and time curve, output voltage to the motor 6.

[0059] Reference Figure 7 This is a schematic diagram of a vehicle accelerator pedal provided in an embodiment of this application, illustrating the positional relationship of the accelerator pedal 2 in the vehicle. Specifically, the accelerator pedal 2 is fixed to the front bulkhead of the vehicle.

[0060] In this embodiment, to obtain the standard motion trajectory of the accelerator pedal 2 under specific operating conditions, an acceleration sensor is first installed on the back of the accelerator pedal 2. When the driver drives the vehicle and reproduces the specific NVH problem, the sensor can collect a set of ideal accelerator pedal 2 motion curves when the problem occurs. This can be understood as the pedal parameter and time curve (i.e., the relationship curve at between acceleration a and time t) of the operating condition under test in this embodiment. This at curve will serve as the reference signal for subsequent automatic control. Subsequently, the acquired at curve is converted into the voltage and time curve (ut curve) required by the drive motor 6 using a signal processor. The converted ut curve is input to the motor 6 control unit to generate a precise motor 6 rotation signal. The motor 6 rotation signal refers to a series of instructions generated based on the ut curve. The control information carried in this signal specifically refers to the target voltage value used to control the speed and torque of the motor 6 at different times in the curve. That is, based on the ut curve, the corresponding voltage is output to the motor 6 to control the accelerator pedal 2.

[0061] Specifically, the process of controlling the accelerator pedal 2 is as follows: the motor 6 control unit outputs the corresponding voltage value to the motor 6 in each control cycle according to the received ut curve. The motor 6 accurately outputs a specific torque and speed according to the voltage value, and then drives the rotating gear 4 through the motor connecting rod 14. The rotation of the rotating gear 4 is converted into the linear motion of the motion push rod 5 through meshing, and finally pushes the fixed plate 1 and the accelerator pedal 2 it holds, so that it perfectly reproduces the previously collected standard AT motion trajectory.

[0062] Reference Figure 8 This is a schematic diagram of the signal conversion of the accelerator pedal provided in an embodiment of this application. Specifically, it shows the conversion process from the acceleration-time (at) curve representing the motion state to the voltage-time (ut) curve of the drive motor 6. This conversion is completed by the signal processor, which calculates the precise voltage required to generate the target acceleration based on the mathematical model of the motor 6 and the transmission system.

[0063] In the prior art, the relationship curve φ-t between the accelerator pedal opening φ and time t is usually used as the reference signal for automatic control. The present application's embodiment uses the at curve as the reference signal for automatic control, which has the following advantages: (1) Real-time feedback: The acceleration vibration signal can reflect the acceleration changes of the vehicle in real time, so the control system can make rapid adjustments based on the current acceleration situation, thereby improving the response speed and control accuracy.

[0064] (2) More adaptable: The relationship between throttle opening and acceleration may vary under different vehicles and road conditions. Using acceleration as a benchmark allows the system to adapt to various situations more flexibly, improving the system's versatility and adaptability.

[0065] (3) Reduce lag effect: Traditional methods of controlling throttle opening may cause a lag between throttle opening and actual acceleration due to the delay of mechanical components. However, by directly monitoring acceleration, this lag can be reduced, making the control more timely.

[0066] Reference Figure 9 This is a schematic diagram of motor control provided in an embodiment of this application. The signal processor plays a connecting role, converting the initially acquired accelerator pedal at curve into an ut signal that can directly control the rotation of motor 6 through calculation. Finally, this ut signal is sent to the motor controller, which executes the signal to precisely drive motor 6 to rotate at a specific speed.

[0067] Specifically, the motor control unit is connected to the motor 6 and is responsible for controlling the movement mode and movement state of the motor 6. The movement mode refers to forward and reverse rotation, and the movement state refers to the output speed of the motor 6.

[0068] This application's embodiments capture and digitize the optimal operation of a human driver, and then reproduce it accurately and infinitely through an accelerator pedal control device, thereby completely solving the problem of inconsistent human operation. This is beneficial for obtaining highly consistent and reliable comparative data in the development of vehicle NVH performance, while significantly improving testing efficiency and automation level.

[0069] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of this application are not limited to the described order of actions, because according to the embodiments of this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of this application.

[0070] This application also provides a vehicle including the above-described accelerator pedal control device.

[0071] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0072] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0073] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A accelerator pedal control device, characterized in that, The device includes a drive module and an execution module; the execution module includes a mounting plate and an accelerator pedal. The drive module is connected to the execution module and is used to drive the fixed plate to move; The accelerator pedal is mounted on the fixed plate, and the movement of the fixed plate drives the accelerator pedal to move.

2. The apparatus according to claim 1, characterized in that, The execution module further includes: a fixing plate bolt, a rotating gear, and a moving push rod; the fixing plate includes: an upper fixing plate and a lower fixing plate located below the upper fixing plate; The rotating gear meshes with the moving push rod and is used to drive the moving push rod to move; The upper fixed plate is connected to the moving push rod; The motion push rod is used to drive the fixed plate to move; The fixing plate bolts are located at both ends of the upper fixing plate and the lower fixing plate, and are used to fix the accelerator pedal in the middle of the upper fixing plate and the lower fixing plate.

3. The apparatus according to claim 2, characterized in that, The drive module includes: a motor, a motor mounting housing, and sound insulation elements; The motor is connected to the rotating gear and is used to drive the rotating gear to rotate; The motor is located inside the motor mounting housing, and the sound insulation element is disposed in the gap between the motor and the motor mounting housing to isolate the motor vibration noise caused when the motor is working.

4. The apparatus according to claim 2, characterized in that, The device also includes an L-shaped bracket, and the actuation module further includes: a pedal mounting shell and a support spring; The rotary gear, the motion push rod, the fixed plate, and the accelerator pedal are disposed inside the pedal mounting housing; The support spring is disposed at the bottom of the lower fixed plate, and one end of the support spring is connected to the lower fixed plate, and the other end is connected to the pedal mounting shell, for supporting the fixed plate; The L-shaped bracket is connected at one end to the motor mounting housing and at the other end to the pedal mounting housing, and is used to fix the motor mounting housing.

5. The apparatus according to claim 3, characterized in that, The drive module further includes: a first elastic element and a second elastic element; The first elastic element has one end connected to the upper part of the inner wall of the motor mounting housing, and the other end connected to the top of the motor; The second elastic element has one end connected to the lower part of the inner wall of the motor mounting housing, and the other end connected to the bottom of the motor.

6. The apparatus according to claim 2, characterized in that, The motion push rod is provided with a toothed groove structure that meshes with the rotating gear.

7. The apparatus according to claim 3, characterized in that, The device also includes: a motor connecting rod; The motor connecting rod is connected to the motor at one end and to the rotating gear at the other end, and is used to drive the rotating gear to rotate when the motor is working.

8. The apparatus according to claim 1, characterized in that, The execution module further includes: a sliding plate groove; The fixed plate is disposed inside the sliding plate groove, the sliding plate groove is provided with a vertically extending guide rail, and the fixed plate moves along the guide rail.

9. A method for controlling an accelerator pedal, characterized in that, The method, applied to the accelerator pedal control device according to any one of claims 1-8, comprises: Obtain the pedal parameters and time curves for the test condition; Convert the pedal parameters and time curves into corresponding voltage and time curves; Based on the voltage-time curve, voltage is output to the motor.

10. A vehicle, characterized in that, Includes the accelerator pedal control device as described in any one of claims 1-8.

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