Steering wheel evaluation device and steering wheel vibration evaluation method

Abstract

The present application relates to a steering wheel evaluation device and steering wheel vibration evaluation method, comprising: a rod body having a slot along its length, a slider slidably connected to the slot, a triaxial vibration sensor mounted on the slider, and a clamping assembly disposed at one end of the rod body for clamping the steering wheel column; a scale disposed on the rod body, the starting end of the scale aligned with one end of the slot and the end aligned with the other end of the slot; and a mirror body disposed on the rod body, a laser emitter disposed in the middle region of the mirror body. The device is portable, has low manufacturing costs, and offers high and accurate evaluation efficiency. It addresses the problem in related art where steering wheel vibration performance evaluation is primarily based on the subjective perception of passengers, which is subjective and cannot objectively reflect steering wheel vibration performance.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a steering wheel evaluation device and a steering wheel vibration evaluation method. Background Art

[0002] As people's living standards improve, passengers' demands for vehicle driving comfort, stability, and NVH (Noise, Vibration, and Harshness) performance are increasing. Steering wheel buffet is directly felt by the driver during driving and directly influences passengers' subjective evaluation of these performance characteristics. Therefore, steering wheel buffet performance is frequently evaluated during vehicle development and use.

[0003] In related technologies, steering wheel vibration performance is primarily evaluated through subjective passenger experience. This involves passengers sitting in a real vehicle and feeling the steering wheel's vibration to determine whether the steering wheel's vibration performance is satisfactory. This subjective factor prevents objective evaluation of steering wheel vibration performance. Summary of the Invention

[0004] The present application provides a steering wheel evaluation device and a steering wheel vibration evaluation method. The device is portable, has low manufacturing cost, and has high and accurate evaluation efficiency. It solves the problem in related technologies that when evaluating the vibration performance of the steering wheel, it is mainly achieved through the subjective feelings of the passengers, which involves subjective factors and cannot objectively reflect the steering wheel vibration performance.

[0005] In a first aspect, an embodiment of the present application provides a steering wheel evaluation device, comprising:

[0006] A rod body, wherein a slide groove is provided along the length direction of the rod body, a slider is slidably connected to the slide groove, a triaxial vibration sensor is installed on the slider, and a clamping assembly is provided at one end of the rod body, and the clamping assembly is used to clamp the column of the steering wheel;

[0007] a scale, the scale being arranged on the rod body, the starting end of the scale being aligned with one end of the slide groove, and the ending end of the scale being aligned with the other end of the slide groove;

[0008] The mirror body is arranged on the rod body, and a laser emitter is arranged in the middle area of ​​the mirror body.

[0009] In combination with the first aspect, in one embodiment, the clamping assembly includes: a first clamping seat and a second clamping seat, the first clamping seat is fixed to the rod body, and the first clamping seat and the second clamping seat are both provided with an arc groove on one side facing each other;

[0010] A fixing bolt is threadedly connected between the first clamping seat and the second clamping seat.

[0011] In combination with the first aspect, in one embodiment, a gasket is provided between the first clamping seat and the second clamping seat.

[0012] In combination with the first aspect, in one embodiment, the rod body is equipped with a level adjustment air chamber;

[0013] When the clamping assembly is clamped on the steering wheel and the bubble of the level adjustment chamber is centered, the three-axis vibration sensor can monitor the vibration displacement and acceleration of the end surface of the steering wheel.

[0014] In a second aspect, an embodiment of the present application provides a steering wheel vibration evaluation method using the steering wheel evaluation device described above, which includes the following steps:

[0015] Using a first clamping assembly to fix the first rod body to the left column of the steering wheel, and using a second clamping assembly to fix the second rod body to the right column of the steering wheel;

[0016] Control the steering wheel to rotate clockwise to the limit position, then counterclockwise to the limit position, and finally return to the center position;

[0017] The end face runout rate of the steering wheel is calculated based on the end face runout displacement data collected by two triaxial vibration sensors.

[0018] In conjunction with the second aspect, in one embodiment, the clamping assembly includes: a first clamping seat and a second clamping seat, the first clamping seat being fixed to the rod body, and arcuate grooves being formed on mutually facing sides of the first clamping seat and the second clamping seat; a fixing bolt being threadedly connected between the first clamping seat and the second clamping seat; and a gasket being provided between the first clamping seat and the second clamping seat;

[0019] Before the steering wheel is controlled to rotate clockwise to the extreme position, then rotated counterclockwise to the extreme position, and finally returned to the center position, the process further includes:

[0020] Turn on the laser transmitter on the left side of the steering wheel. If a laser dot appears on the mirror on the right side of the steering wheel, add or reduce the number of spacers between the first clamping seat and the second clamping seat until the laser dot is located in the center of the mirror.

[0021] In conjunction with the second aspect, in one embodiment, when the laser emitter on the left side of the steering wheel is turned on, if a laser point is found on the mirror body on the right side of the steering wheel, the number of spacers is increased or decreased between the first clamping seat and the second clamping seat until the laser point is located before the center of the mirror body appears, and further comprising:

[0022] Pre-tighten the two first clamping seats on the steering wheel column, so that the rod body is pre-tightened on the steering wheel column;

[0023] Rotate the first clamping seat along the width direction of the vehicle body until the air bubble in the horizontal adjustment air chamber is in the middle.

[0024] In conjunction with the second aspect, in one embodiment, after rotating the first clamping seat along the width direction of the vehicle body until the bubble in the horizontal adjustment air chamber is in the middle, the method further includes:

[0025] Move the two sliders so that the line connecting the two triaxial vibration sensors along the vehicle body direction passes through the center point of the steering wheel.

[0026] In conjunction with the second aspect, in one embodiment, after calculating the end face runout rate of the steering wheel based on the end face runout displacement data collected by the two tri-axial vibration sensors, the method further includes:

[0027] Slide the corresponding sliders on the two rods away from each other so that the connecting line of the two triaxial vibration sensors passes through the center point of the steering wheel;

[0028] Control the steering wheel to rotate clockwise to the limit position, then counterclockwise to the limit position, and finally return to the center position;

[0029] The end face vibration of the steering wheel is calculated based on the end face runout acceleration data collected by two triaxial vibration sensors.

[0030] In conjunction with the second aspect, in one embodiment, controlling the steering wheel to rotate clockwise to an extreme position, then counterclockwise to an extreme position, and finally returning to the center position includes:

[0031] Manually rotate at a constant speed or use the steering robot to rotate the steering wheel clockwise to the limit position, then counterclockwise to the limit position, and finally return to the center position.

[0032] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0033] Two clamping assemblies clamp the rods on the left and right steering wheel columns. The sliders can be moved to adjust their position, allowing the line connecting the two triaxial vibration sensors to pass through the center of the steering wheel for precise measurement of end-face vibration displacement. Alternatively, one triaxial vibration sensor can be positioned at 3 o'clock and the other at 9 o'clock for precise measurement of end-face acceleration. A graduated scale serves as a scale reference when the sliders are moved, primarily to ensure that the left and right triaxial vibration sensors can move up and down with the same size, ensuring that the left and right triaxial vibration sensors are positioned at the 3 / 9 o'clock positions on the steering wheel. Before measurement, a laser emitter emits a laser, and the clamping assembly adjusts the rod's clamping height until the laser point on the opposite mirror is at the center, ensuring accurate measurement of the triaxial vibration sensors. This portable evaluation device features low manufacturing cost and high efficiency and accuracy. It addresses the problem in related art where steering wheel buffet performance evaluation relies primarily on subjective passenger perception, which is subjective and does not objectively reflect steering wheel buffet performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the steering wheel evaluation device;

[0036] Figure 2 Schematic diagram of the three-dimensional structure of the slider;

[0037] Figure 3 This is a top-down structural diagram of the steering wheel evaluation device installed on the columns on the left and right sides of the steering wheel.

[0038] In the figure: 1. Rod body; 11. Slide groove; 2. Slider; 3. Clamping assembly; 31. First clamping seat; 32. Second clamping seat; 33. Fixing bolt; 34. Arc groove; 4. Scale; 5. Mirror body; 6. Laser emitter; 7. Level adjustment chamber; 8. Steering wheel. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The embodiments of the present application provide a steering wheel evaluation device and a steering wheel vibration evaluation method. The device is portable, has low manufacturing cost, and has high and accurate evaluation efficiency. It solves the problem in related technologies that when evaluating the vibration performance of the steering wheel, it is mainly achieved through the subjective feelings of the passengers, which involves subjective factors and cannot objectively reflect the vibration performance of the steering wheel.

[0041] First, as Figure 1 As shown, an embodiment of the present application provides a steering wheel evaluation device, which may include: a rod body 1, the rod body 1 is provided with a slide groove 11 along its own length direction, the slide groove 11 is slidably connected to a slider 2, the slider 2 is equipped with a three-axial vibration sensor, and a clamping assembly 3 is provided at one end of the rod body 1, the clamping assembly 3 is used to clamp the column of the steering wheel 8; a scale 4, the scale 4 is provided on the rod body 1, the starting end of the scale 4 is aligned with one end of the slide groove 11, and the end thereof is aligned with the other end of the slide groove 11; a mirror body 5, the mirror body 5 is provided on the rod body 1, and a laser emitter 6 is provided in the middle area of ​​the mirror body 5.

[0042] Exemplarily, the length direction of the rod body 1 extends along the left and right directions, and the rod body 1 is provided with a slide groove 11 along the left and right directions, the slide groove 11 is slidably connected to the slider 2, and the slider 2 is installed with a three-axial vibration sensor, which can measure the output acceleration and displacement parameters; the clamping assembly 3 is fixed to the left end of the rod body 1, and its clamping assembly 3 can fix the rod body 1 to the column of the steering wheel 8; its scale 4 can measure the movement of the slider 2. After the subsequent steering wheel vibration evaluation is completed, if the offset distance of the slider 2 observed by the scale 4 exceeds the set threshold, the vibration evaluation test can be ignored; in the subsequent steering wheel vibration evaluation process, the three-axial sensor can be calibrated by using whether the laser point emitted by the laser emitter 6 is at the center of the mirror body 5 on the opposite side to avoid the problem of excessive measurement error of the three-axial sensor.

[0043] Specifically, two sets of clamping assemblies 3 are used to clamp the rod body 1 on the columns on both the left and right sides of the steering wheel 8. The three-axial vibration sensor can be moved and repositioned via the slider 2, so that the line connecting the two three-axial vibration sensors passes through the center of the steering wheel 8, facilitating the measurement of end-face vibration displacement. Alternatively, one three-axial vibration sensor can be positioned at the three o'clock position and the other at the nine o'clock position, facilitating the measurement of end-face acceleration of the steering wheel 8. Before measurement, the laser emitter 6 emits a laser, and the clamping assembly 3 is used to adjust the clamping height of the rod body 1 until the laser point on the opposite mirror body 5 is at the center point, ensuring accurate measurement by the three-axial vibration sensor. This device is portable, has low manufacturing costs, and offers high and accurate evaluation efficiency. It solves the problem in related technologies where the evaluation of steering wheel vibration performance is primarily based on the subjective perception of passengers, which is subjective and does not objectively reflect the steering wheel vibration performance.

[0044] In combination with the first aspect, in one embodiment, Figure 1 As shown, the clamping assembly 3 may include: a first clamping seat 31 and a second clamping seat 32. The first clamping seat 31 is fixed to the rod body 1. The first clamping seat 31 and the second clamping seat 32 are each provided with an arc-shaped groove 34 on the side facing each other. A fixing bolt 33 is threadedly connected between the first clamping seat 31 and the second clamping seat 32. For example, the first clamping seat 31 is fixed to the left end of the rod body 1. The arc-shaped groove 34 on the bottom surface of the first clamping seat 31 can pre-tighten the first clamping seat 31 on the column of the steering wheel 8. The fixing bolt 33 can fix the column of the steering wheel 8 between the arc-shaped groove 34 of the first clamping seat 31 and the arc-shaped groove 34 of the second clamping seat 32, completing the fixing of the rod body 1 and facilitating the subsequent steering wheel vibration evaluation.

[0045] In conjunction with the first aspect, in one embodiment, a gasket is provided between the first clamping seat 31 and the second clamping seat 32. For example, when the left and right columns of the steering wheel 8 both clamp the rod body 1, the rod bodies 1 on both sides will be at different heights, affecting the subsequent two triaxial vibration sensors from measuring within the same reference plane, thus affecting the accuracy of the steering wheel vibration assessment. At this time, the laser emitter 6 on the right mirror body 5 is turned on, the laser point within the right mirror body 5 is observed, and the number of gaskets is increased or decreased between the first clamping seat 31 and the second clamping seat 32 until the laser point within the right mirror body 5 is located at the center, indicating that the triaxial vibration sensors on both sides are located in the same plane, and that the plane is parallel to the plane of the steering wheel 8.

[0046] In combination with the first aspect, in one embodiment, Figure 1 and Figure 3As shown, the rod body 1 is equipped with a horizontal adjustment air chamber 7; when the clamping assembly 3 is clamped on the steering wheel 8 and the bubble in the horizontal adjustment air chamber 7 is centered, the three-axis vibration sensor can monitor the vibration displacement and acceleration of the end face of the steering wheel 8. For example, when the bubble in the horizontal adjustment air chamber 7 is centered, it means that the measurement axis of the three-axis vibration sensor is perpendicular to the plane where the steering wheel 8 is located. If the bubble in the horizontal adjustment air chamber 7 is deviated to the left or right, it means that there is an inclination angle between the measurement axis of the three-axis vibration sensor and the plane where the steering wheel 8 is located, thereby affecting the measurement accuracy of the three-axis vibration sensor.

[0047] In combination with the first aspect, in one embodiment, a displacement sensor and an acceleration sensor can be detachably installed on the slider 2. When the end face vibration displacement of the steering wheel 8 needs to be measured, the displacement sensor is installed on the slider 2 for measurement; when the end face acceleration of the steering wheel 8 needs to be measured, the acceleration sensor is installed on the slider 2 for measurement.

[0048] In combination with the first aspect, in one embodiment, Figure 2 As shown, the slider 2 can be roughly set in a "T" shape, with its top end being flat and the bottom end being arc-shaped, fitting the outer surface of the rod body 1; the bottom end is embedded in the slide groove 11 in the rod body 1, and after sliding in, it can slide in the scale direction of the scale 4 on the rod body 1.

[0049] In a second aspect, embodiments of the present application provide a steering wheel buffet evaluation method using the steering wheel evaluation device described in some of the above embodiments, comprising the following steps:

[0050] S100: Figure 3 As shown, the first rod body 1 is fixed to the left column of the steering wheel 8 by using the first clamping assembly 3, and the second rod body 1 is fixed to the right column of the steering wheel 8 by using the second clamping assembly 3;

[0051] S200: Control the steering wheel 8 to rotate clockwise to the limit position, then counterclockwise to the limit position, and finally return to the center position;

[0052] S300: Calculating the end face runout rate of the steering wheel 8 based on the end face runout displacement data collected by the two tri-axial vibration sensors.

[0053] In this embodiment, the steering wheel end face runout is measured: the sensor can be a three-axis vibration sensor with wireless transmission, and only the vertical runout displacement relative to the rotating end face of the steering wheel is collected. The steering wheel is rotated clockwise from the center position (when driving in a straight line) to the extreme position, then counterclockwise to the extreme position on the other side, and finally returned to the center position. This completes the acquisition. Based on the starting point calibration as the benchmark, after removing the burr signal in one cycle, the steering wheel end face runout rate η is calculated. The formula for the steering wheel end face runout rate η is as follows:

[0054]

[0055] Where S1 is the maximum peak value of the fluctuation period in the two triaxial vibration sensors, S2 is the minimum peak value of the fluctuation period in the two triaxial vibration sensors, and S AV is the average displacement fluctuation of the two triaxial vibration sensors within a full cycle.

[0056] In conjunction with the second aspect, in one embodiment, the clamping assembly 3 includes: a first clamping seat 31 and a second clamping seat 32, the first clamping seat 31 being fixed to the rod body 1, and an arc-shaped groove 34 being formed on the sides of the first clamping seat 31 and the second clamping seat 32 facing each other; a fixing bolt 33 being threadedly connected between the first clamping seat 31 and the second clamping seat 32; and a gasket being provided between the first clamping seat 31 and the second clamping seat 32;

[0057] Before the steering wheel 8 is controlled to rotate clockwise to the extreme position, then rotated counterclockwise to the extreme position, and finally returned to the center position, the following steps are further included before S200:

[0058] Turn on the laser emitter 6 on the left side of the steering wheel 8. If a laser spot is found on the mirror body 5 on the right side of the steering wheel 8, increase or decrease the number of spacers between the first clamping seat 31 and the second clamping seat 32 until the laser spot is located at the center of the mirror body 5.

[0059] In this embodiment, when the tube columns on the left and right sides of the steering wheel 8 clamp the rod body 1, the rod bodies 1 on both sides will be at different heights, affecting the subsequent two three-axial vibration sensors to measure not in the same reference plane, affecting the steering wheel vibration evaluation accuracy. At this time, turn on the laser emitter 6 on the right mirror body 5, observe the laser point in the right mirror body 5, and increase or decrease the number of gaskets between the first clamping seat 31 and the second clamping seat 32 until the laser point in the right mirror body 5 is in the center, indicating that the three-axial vibration sensors on both sides are in the same plane, and the plane is parallel to the plane where the steering wheel 8 is located, ensuring that the measurements of the two three-axial vibration sensors are at the same reference point.

[0060] In conjunction with the second aspect, in one embodiment, when the laser emitter 6 on the left side of the steering wheel 8 is turned on, if a laser point is found on the mirror body 5 on the right side of the steering wheel 8, the number of spacers is increased or decreased between the first clamping seat 31 and the second clamping seat 32 until the laser point is located before the center of the mirror body 5 appears, and the following steps are also included:

[0061] Pre-tighten the two first clamping seats 31 on the column of the steering wheel 8, so that the rod body 1 is pre-tightened on the column of the steering wheel 8;

[0062] The first clamping seat 31 is rotated along the width direction of the vehicle body until the air bubble in the level adjustment air chamber 7 is in the middle.

[0063] In this embodiment, when the bubble in the horizontal adjustment chamber 7 is centered, it indicates that the measuring axis of the three-axial vibration sensor is perpendicular to the plane where the steering wheel 8 is located. If the bubble in the horizontal adjustment chamber 7 is biased to the left or right, it indicates that there is an inclination angle between the measuring axis of the three-axial vibration sensor and the plane where the steering wheel 8 is located, thereby affecting the measurement accuracy of the three-axial vibration sensor.

[0064] In conjunction with the second aspect, in one embodiment, after rotating the first clamping seat 31 along the width direction of the vehicle body until the bubble in the horizontal adjustment air chamber 7 is in the middle, the following steps are further included:

[0065] Move the two sliders 2 so that the line connecting the two triaxial vibration sensors along the vehicle body direction passes through the center point of the steering wheel 8 .

[0066] In this embodiment, a sensor that passes through the center point of steering wheel 8 and is located in the opposite direction of steering wheel 8 can determine that if the end face runout of steering wheel 8 is large at a certain angle, the opposite side should also be the largest, ensuring error-free left and right measurements. This serves as a calibration and verification, making subsequent parameter measurements more accurate, reducing errors, and improving precision. If the sensor does not pass through the center point, it is impossible to determine whether the end face runout at a certain angle of steering wheel 8 is a signal glitch or the runout value under normal excitation. If the data are too close, the test accuracy cannot be verified.

[0067] In conjunction with the second aspect, in one embodiment, after calculating the end face runout rate of the steering wheel 8 based on the end face runout displacement data collected by the two tri-axial vibration sensors, the following steps are further included:

[0068] Slide the corresponding sliders 2 on the two rods 1 away from each other, and make the connecting line of the two triaxial vibration sensors pass through the center point of the steering wheel 8;

[0069] Control the steering wheel 8 to rotate clockwise to the limit position, then rotate it counterclockwise to the limit position, and finally return to the center position;

[0070] The end face vibration amount of the steering wheel 8 is calculated based on the end face runout acceleration data collected by the two tri-axial vibration sensors.

[0071] In this embodiment, the steering wheel vibration amount is measured: when the steering wheel 8 is a half-width or rectangular steering wheel 8, the two three-axial vibration sensors are not located on the rotating circumference of the outer contour of the half-width or rectangular steering wheel 8. By sliding the three-axial vibration sensor on the first slider 2 to the three o'clock direction and the three-axial vibration sensor on the second slider 2 to the nine o'clock direction, the distance between the two three-axial vibration sensors and the center of the half-width or rectangular steering wheel 8 can be made as close as possible to the distance from the outer contour of the half-width or rectangular steering wheel 8 to the center of the half-width or rectangular steering wheel 8, and the acceleration value of the outer contour of the end face of the steering wheel 8 can be more accurately collected. The same uniaxial wireless transmission is used to collect the acceleration value perpendicular to the end face of the steering wheel. The vibration amount A formula is as follows:

[0072]

[0073] Where a L is the acceleration value collected by the three-axis vibration sensor on the left, a R The acceleration value collected by the three-axis vibration sensor on the right side is used to calculate the vibration amount using the phase difference method.

[0074] In conjunction with the second aspect, in one embodiment, controlling the steering wheel 8 to rotate clockwise to an extreme position, then counterclockwise to an extreme position, and finally returning to the center position comprises the following steps:

[0075] Manually rotate at a constant speed or use the steering robot to rotate the steering wheel 8 clockwise to the extreme position, then rotate it counterclockwise to the extreme position, and finally return to the center position.

[0076] In the third aspect, the embodiment of the present application provides a steering wheel vibration evaluation method. When in use, the device is pressed Figure 3 Installed on the left side of the steering wheel 8, the horizontal position is preliminarily adjusted according to the horizontal adjustment chamber 7 to ensure that the measuring axis of the three-axial vibration sensor is perpendicular to the cylinder of the steering wheel 8. The same is true for the right side of the steering wheel 8. At this time, turn on the laser emitter 6 on one side. If no laser point appears at the center point of the opposite mirror body 5, it means that the three-axial vibration sensors on both sides are not installed in the same plane. It is necessary to adjust the fastening height of the mounting bolts 33 and use the gasket compensation strategy to finally achieve that the laser emission points on both sides can accurately fall on the center of the opposite mirror body 5, indicating that the symmetrical installation of the device is completed. The connection line of the two three-axial vibration sensors needs to pass through the center point of the steering wheel 8, which can be confirmed by pulling the line. Finally, check again whether the laser point has offset in the process and adjust again. After the calibration is met, carry out data testing and other uses.

[0077] Steering wheel end face runout measurement: The sensor can be a unidirectional displacement sensor with wireless transmission. It only collects vertical runout displacement relative to the rotating end face of the steering wheel 8. From the center position (when driving straight), the steering wheel is rotated clockwise to the extreme position, then counterclockwise to the other extreme position, and finally back to the center position. This completes the acquisition. The acquisition is calibrated using the starting point as the benchmark. After removing burrs in one cycle, the steering wheel end face runout rate η is calculated.

[0078] Steering wheel end face acceleration measurement: The sensor can be an accelerometer. Slider 2 is moved so that two accelerometers, one at three o'clock and the other at nine o'clock, are positioned on the steering wheel 8. Uniaxial wireless transmission is also used to collect acceleration values ​​perpendicular to the end face of the steering wheel 8. The steering wheel 8 is rotated at a constant speed, either manually or using a steering robot, and the steering wheel end face vibration A is calculated.

[0079] Before turning the steering wheel 8 , a clamp can be used to fix both sides of the slider 2 to prevent the slider 2 from moving along the slide track during use, thereby affecting the subsequent measurement accuracy.

[0080] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0081] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0082] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A steering wheel evaluation device, characterized in that: It includes: A rod body (1), wherein the rod body (1) is provided with a slide groove (11) along its length direction, the slide groove (11) is slidably connected to a slider (2), the slider (2) is installed with a triaxial vibration sensor, and a clamping assembly (3) is provided at one end of the rod body (1), the clamping assembly (3) is used to clamp the column of the steering wheel (8); A scale (4), the scale (4) being arranged on the rod body (1), the starting end of the scale (4) being aligned with one end of the slide groove (11), and the ending end of the scale (4) being aligned with the other end of the slide groove (11); A mirror body (5), the mirror body (5) is arranged on the rod body (1), and a laser emitter (6) is provided in the middle area of ​​the mirror body (5); The clamping assembly (3) comprises: a first clamping seat (31) and a second clamping seat (32); the first clamping seat (31) is fixed to the rod body (1); and arc-shaped grooves (34) are provided on the sides of the first clamping seat (31) and the second clamping seat (32) facing each other. A fixing bolt (33) is threadedly connected between the first clamping seat (31) and the second clamping seat (32); A gasket is provided between the first clamping seat (31) and the second clamping seat (32); The rod body (1) is equipped with a level adjustment air chamber (7); When the clamping assembly (3) is clamped on the steering wheel (8) and the bubble of the horizontal adjustment air chamber (7) is centered, the three-axial vibration sensor can monitor the vibration displacement and acceleration of the end face of the steering wheel (8).

2. A steering wheel vibration evaluation method using the steering wheel evaluation device according to claim 1, characterized in that: It includes the following steps: Using a first clamping assembly (3) to fix the first rod body (1) on the left column of the steering wheel (8), and using a second clamping assembly (3) to fix the second rod body (1) on the right column of the steering wheel (8); Control the steering wheel (8) to rotate clockwise to the limit position, then rotate counterclockwise to the limit position, and finally return to the center position; The end face runout rate of the steering wheel (8) is calculated based on the end face runout displacement data collected by two triaxial vibration sensors.

3. The steering wheel vibration evaluation method of the steering wheel evaluation device according to claim 2, characterized in that: Before the control steering wheel (8) is rotated clockwise to the extreme position, then rotated counterclockwise to the extreme position, and finally returned to the center position, it also includes: Turn on the laser transmitter (6) on the left side of the steering wheel (8). If a laser spot is found on the mirror body (5) on the right side of the steering wheel (8), increase or decrease the number of spacers between the first clamping seat (31) and the second clamping seat (32) until the laser spot is located at the center of the mirror body (5).

4. The steering wheel vibration evaluation method of the steering wheel evaluation device according to claim 3, characterized in that: When the laser emitter (6) on the left side of the steering wheel (8) is turned on, if a laser point is found on the mirror body (5) on the right side of the steering wheel (8), the number of gaskets is increased or decreased between the first clamping seat (31) and the second clamping seat (32) until the laser point is located before the center of the mirror body (5) appears, and further includes: Pre-tightening the two first clamping seats (31) on the tubular column of the steering wheel (8) so that the rod body (1) is pre-tightened on the tubular column of the steering wheel (8); The first clamping seat (31) is rotated along the width direction of the vehicle body until the air bubble in the horizontal adjustment air chamber (7) is located in the middle.

5. The steering wheel vibration evaluation method of the steering wheel evaluation device according to claim 4, characterized in that: After rotating the first clamping seat (31) along the width direction of the vehicle body until the air bubble in the horizontal adjustment air chamber (7) is in the middle, the method further includes: Move the two sliders (2) so that the line connecting the two triaxial vibration sensors along the vehicle body direction passes through the center point of the steering wheel (8).

6. The steering wheel vibration evaluation method of the steering wheel evaluation device according to claim 2, characterized in that: After calculating the end face runout rate of the steering wheel (8) based on the end face runout displacement data collected by the two triaxial vibration sensors, the method further includes: Slide the corresponding sliders (2) on the two rod bodies (1) away from each other so that the direction of the connecting line of the two three-axis vibration sensors passes through the center point of the steering wheel (8); Control the steering wheel (8) to rotate clockwise to the limit position, then rotate counterclockwise to the limit position, and finally return to the center position; Based on the end face vibration acceleration data collected by two triaxial vibration sensors, the end face vibration amount of the steering wheel (8) is calculated.

7. The steering wheel vibration evaluation method of the steering wheel evaluation device according to claim 2, characterized in that: The control steering wheel (8) is rotated clockwise to the extreme position, then rotated counterclockwise to the extreme position, and finally returned to the center position, including: Manually rotate at a constant speed or use the steering robot to rotate the steering wheel (8) clockwise to the limit position, then rotate it counterclockwise to the limit position, and finally return to the center position.

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