Vehicle six-component test method

Abstract

The invention relates to a whole vehicle six-component test method, which comprises the following steps: determining an adaptive six-component sensor configuration unit according to the wheel size of a test vehicle; installing the six-component sensor configuration unit on the test vehicle, and connecting the six-component sensor configuration unit with the test equipment; generating a wheel channel oscillogram based on preset wheel six-component parameters; under the test working condition, generating a wheel fault oscillogram based on the six-component data and the wheel channel oscillogram collected by the test equipment; judging whether the wheel fault oscillogram is normal or not; if yes, ending the test and storing six-component test data; otherwise, checking abnormal reasons. The corresponding six-component sensor configuration unit is determined according to the wheel size requirement of the test vehicle, the wheel fault oscillogram is generated, traditional troubleshooting depending on experience is converted into accurate diagnosis driven by data, data deviation caused by manual operation errors and equipment differences is reduced, and the accuracy of six-component measurement is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle system development, and in particular to a method for testing six components of force in a vehicle. Background Technology

[0002] Whether domestic or foreign, before a new car is launched, during the vehicle development phase, automakers need to conduct detailed road simulation tests using six-component force sensors on the wheels to evaluate key performance indicators such as traction, braking force, and lateral stability. These six-component force tests are conducted on all four wheels of the vehicle. The purpose of the six-component force test is threefold: First, to ensure the effectiveness and safety of the wheels during use: the test detects the wheel's performance under various forces, ensuring its stability and durability under extreme conditions. Second, to provide valuable data: the test results provide automakers with a basis for improving wheel design, helping to improve wheel quality and lifespan. Third, to optimize vehicle performance: the test comprehensively evaluates key performance indicators such as traction, braking force, lateral stability, and rolling resistance, providing a scientific basis for chassis tuning, thereby improving vehicle safety, comfort, and fuel economy. Therefore, improving the accuracy of six-component force measurement is crucial, and how to improve the accuracy of six-component force measurement is an urgent problem that the industry needs to solve. Summary of the Invention

[0003] This application provides a method for testing six components of a vehicle, which can solve the problem of large measurement errors in the six-component force test of a vehicle in related technologies.

[0004] This application provides a method for testing six components of a vehicle, comprising: Based on the wheel size of the test vehicle, determine the appropriate six-component force sensor configuration unit; The six-component force sensor configuration unit is installed on the test vehicle and connected to the test equipment; Based on the preset six-component force parameters of the wheel, a wheel channel waveform diagram is generated; Under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment. Determine if the waveform diagram of a wheel fault is normal; If so, end the experiment and save the six-component force test data; Otherwise, investigate the cause of the abnormality.

[0005] In one embodiment, after installing the six-component force sensor configuration unit on the test vehicle and connecting the six-component force sensor configuration unit to the test equipment, before generating the wheel channel waveform diagram based on preset wheel six-component force parameters, the method further includes: Adjust the configuration unit of the six-component force sensor to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters.

[0006] In one implementation, the six-component force sensor configuration unit is adjusted to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters, specifically including: The lever arm parameters are set based on the wheel size of the test vehicle; Adjust the wheel angle parameters displayed on the test equipment and the actual wheel angle parameters by setting the angle to zero; Rotate the wheel to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters, and complete the debugging of the six-component force sensor configuration unit.

[0007] In one implementation, a suitable six-component force sensor configuration unit is determined based on the wheel size of the test vehicle, specifically including: The offset blocks are configured to meet the wheel assembly requirements of the test vehicle; Based on the wheel size of the test vehicle, determine the tire material to be installed on the wheel hub; Based on the wheel size of the test vehicle, the six-component force sensor adapter disk was determined.

[0008] In one embodiment, the offset block thickness is set to be equal to the difference between the distance from the center of the six-component test wheel hub to the mounting surface and the distance from the center of the original wheel hub to the mounting surface, so that the offset block meets the wheel assembly requirements of the test vehicle.

[0009] In one embodiment, the six-component force sensor configuration unit is installed on the test vehicle and connected to the test equipment, specifically including: The six-component force sensor configuration unit was installed on the test wheel; The test wheels were mounted on the test vehicle located on the lifting equipment; Connect the six-component force sensor body to the test equipment and arrange the six-component force sensor communication line to meet the arrangement requirements.

[0010] In one embodiment, the six-component force sensor communication lines are arranged such that there is a preset clearance distance between the six-component force communication lines and the rotating component, the six-component force communication lines meet the relaxation standard, and the six-component force communication lines do not cross each other, so that the six-component force sensor communication lines meet the arrangement requirements.

[0011] In one implementation, a wheel channel waveform diagram is generated based on preset wheel six-component force parameters, specifically including: Based on the preset wheel six-component force parameters, configure the initial waveform diagram of the test wheel; Map the preset wheel six-component force parameters to the initial wheel waveform diagram; Save the configuration information and generate a waveform diagram of the wheel channel.

[0012] In one implementation, determining whether the wheel fault waveform is normal specifically includes: Determine if there are any missing channel signals in the wheel fault waveform diagram; Determine if the channel signal of the wheel fault waveform is zero; Determine whether the oscillation amplitude of the wheel fault waveform exceeds the set value; If all values ​​are negative, the six-component force data is normal; otherwise, the wheel fault waveform diagram is abnormal.

[0013] In one implementation, under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment, specifically including: Among various test conditions, select one test condition and drive at the corresponding vehicle speed to collect the corresponding six-component force data. Based on the wheel channel waveform diagram and the six component force data corresponding to this working condition, generate the wheel fault waveform diagram corresponding to this working condition. By analogy, obtain the wheel fault waveform diagrams corresponding to all test conditions.

[0014] The beneficial effects of the technical solutions provided in this application include: This application provides a method for testing six-component forces on a vehicle. Based on the wheel size requirements of the test vehicle, a corresponding six-component force sensor configuration unit is determined. Under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment. Through the visualization analysis of the waveform diagram, the traditional experience-based fault diagnosis is transformed into a data-driven accurate diagnosis, reducing data deviations caused by human operation errors and equipment differences, and improving the accuracy of six-component force measurement. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A flowchart of the six-component force test method for a whole vehicle provided in this application embodiment; Figure 2 A detailed flowchart of step 101 provided for an embodiment of this application; Figure 3 A detailed flowchart of step 102 provided in the embodiments of this application. Detailed Implementation

[0017] 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 are within the scope of protection of the present application.

[0018] This application provides a method for testing six components of a vehicle, which can solve the problem of large measurement errors in the six-component force test of a vehicle in related technologies.

[0019] During the development of the entire vehicle system, the requirements for the six components of force on each component are relatively high. The impact of these six components on the entire vehicle body is as follows: Impact on vehicle body fatigue life: The forward, backward, leftward, rightward, upward, and downward forces in the six-component force system can cause fatigue damage to the vehicle body during driving. To determine the fatigue life of the vehicle body, fatigue tests are required, involving repeated application of loads to observe whether fatigue failure occurs. Analysis of the test data can determine the fatigue life of the vehicle body, allowing for design improvements to enhance its safety and durability.

[0020] Impact on vehicle performance: Wheel six-component force sensors are used during the vehicle development phase for detailed road simulation tests. By accurately measuring the torque of the wheel in the vertical, longitudinal, lateral, and around these three axes, key performance indicators such as traction, braking force, lateral stability, and rolling resistance can be comprehensively evaluated. This data provides a scientific basis for vehicle chassis tuning and directly affects vehicle safety, comfort, and fuel economy.

[0021] Impact on materials and structure: During the vehicle body design process, it is necessary to improve the vehicle body structure to enhance its load-bearing capacity. In particular, increasing the material thickness in areas of stress concentration on the body is crucial to prevent fatigue failure. Furthermore, strengthening the joints of the body to ensure robust connections is also an important measure to improve the safety and durability of the vehicle body.

[0022] Weld joint fatigue analysis: A fatigue analysis model was established using MSC.Nastran software, and the stress distribution under unit load was obtained using the inertial release method. The stress distribution results and the experimentally measured six-component load spectrum were imported into FEMFAT software for fatigue damage analysis. The results showed that the fatigue damage of the vehicle body and weld joints were within the target range, indicating that this method is feasible and can provide a reference for the early development and optimization design of new vehicle models.

[0023] The accuracy and consistency of the entire vehicle six-component force measurement standard affect the overall test results. Therefore, improving the accuracy of the six-component force measurement is crucial, and how to improve the accuracy of the six-component force measurement is an urgent problem that the industry needs to solve. This application provides a vehicle six-component force test method that can improve the accuracy of the six-component force measurement and standardize the measurement process. It also proposes a standardized procedure to minimize data errors from measurements taken by the same person at different times for the same vehicle, or from measurements taken by different people at the same time for the same vehicle.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0025] See Figures 1 to 3 This application provides a method for testing six components of a vehicle, comprising: 101: Determine the appropriate six-component force sensor configuration unit based on the wheel size of the test vehicle; 102: Install the six-component force sensor configuration unit on the test vehicle and connect the six-component force sensor configuration unit to the test equipment; 103: Generate a wheel channel waveform diagram based on the preset six-component force parameters of the wheel; 104: Under test conditions, based on the six-component force data and wheel channel waveform diagram collected by the test equipment, a wheel fault waveform diagram is generated; 105: Determine if the waveform diagram of a wheel fault is normal; 106: If so, end the experiment and save the six-component force test data; 107: Otherwise, investigate the cause of the abnormality.

[0026] In this application, a corresponding six-component force sensor configuration unit is determined according to the wheel size requirements of the test vehicle. Under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment. Through the visualization analysis of the waveform diagram, the traditional experience-based fault diagnosis is transformed into data-driven accurate diagnosis, reducing data deviations caused by human operation errors and equipment differences, and improving the accuracy of six-component force measurement.

[0027] Furthermore, this vehicle six-component force testing method also has the following effects: by determining the corresponding six-component force sensor configuration unit, it ensures that the six-component force sensor is aligned with the center point of the wheel hub during installation, avoiding misalignment of the force direction caused by installation position deviation and reducing data distortion; by adjusting the six-component force sensor configuration unit, signal offset is eliminated, ensuring the continuity of data acquisition. These effects will be analyzed in detail below.

[0028] In this embodiment, the six-component force sensor configuration unit includes: a six-component force sensor body, a six-component force sensor adapter plate, a wheel hub mounting tire, and an offset block.

[0029] In the early stages of the experiment, it is necessary to prepare the test samples to ensure that the experiment can be carried out smoothly and achieve the expected results. The specific samples that need to be prepared are as follows: Six-component force sensor body: Prepare six-component force sensor bodies of the corresponding specifications that meet the test requirements. Generally, the number of six-component force sensor bodies prepared is the same as the number of wheels, which is 4 sets. The six-component force sensor bodies may be of four-hole, five-hole, or six-hole type depending on actual needs; Matching data sampling lines: Each set of six-component force sensor body is equipped with a dedicated six-component force sensor communication line, a total of 4 lines. These six-component force sensor communication lines are responsible for transmitting the data collected by the six-component force sensor to the test equipment, and their quality and performance directly affect the accuracy and stability of the data.

[0030] The six-component force testing equipment and data sampling equipment constitute the experimental setup. A set of six-component force testing equipment is prepared to receive and process data transmitted from the six-component force sensor body via the six-component force sensor communication line. It also needs to be equipped with a compatible power cord to ensure normal power supply and operation. The data sampling equipment is used to collect relevant data during the test; similarly, this equipment also needs a corresponding power cord to ensure stable operation.

[0031] High-power lithium battery: In order to meet the power supply needs of various equipment during the test, a high-power lithium battery is prepared. The battery should have sufficient power reserve and stable output performance to ensure that it can provide reliable power support for all equipment at the test site and avoid affecting the test progress and data quality due to power problems.

[0032] Before the test begins, a test task sheet must be received. This task sheet contains relevant vehicle information, which helps in accurately identifying and locating the test vehicle. It also outlines the test items, clearly defining the specific tests to be conducted and the corresponding operating conditions for each item. Through this task sheet, test personnel can clearly understand the test objectives and requirements, ensuring thorough preparation for subsequent test work.

[0033] Upon receiving the test order, the test personnel must proceed to the designated location to receive the test vehicle and conduct a comprehensive inspection of its exterior, checking for scratches, dents, paint peeling, and other defects. During the inspection, the personnel use professional inspection tools and recording forms to meticulously document any cosmetic issues discovered, including the location, size, and shape of the defects, and take photographs as supporting evidence. After completing the cosmetic acceptance, the vehicle undergoes a test run. Following the predetermined test run route and operating procedures, the personnel start the test vehicle and operate it under specified conditions for a period of time. During the test run, they monitor the vehicle's operating status and meticulously record any malfunctions, their occurrence times, and mileage to facilitate subsequent troubleshooting and repair.

[0034] After completing a series of preliminary inspections, such as vehicle appearance acceptance and trial operation, and confirming that the vehicle meets the relevant test conditions, the wheel removal process begins: the vehicle is driven to the vehicle lifting equipment and the four wheels are removed.

[0035] After completing the above operations, proceed to the vehicle six-component force test.

[0036] Based on the above embodiments, in this embodiment, a suitable six-component force sensor configuration unit is determined according to the wheel size of the test vehicle, specifically including steps 1011 to 1013: Before proceeding, prepare four six-point force test rims of the same size as the original vehicle (e.g., 21 inches).

[0037] Step 1011: Configure offset blocks that meet the wheel assembly requirements of the test vehicle.

[0038] Specifically, the offset block thickness is set to be equal to the difference between the distance from the center of the six-component test wheel hub to the mounting surface and the distance from the center of the original wheel hub to the mounting surface, so that the offset block meets the wheel assembly requirements of the test vehicle.

[0039] Remove the tire cover from one of the original wheel tires and use two right-angle steel rulers to measure the relevant dimensions of the rim, such as rim size (16 / 18 / 20 / 21 inches), rim width, and center distance. Calculate the distance from the center of the original wheel rim to the mounting surface. Also calculate the distance from the center of the six-component force test rim to the mounting surface. Based on these distances, and the original wheel rim's center-to-mounting surface distance, determine the thickness of the offset block. If a pre-machined offset block is available, it can be used directly. Otherwise, contact the supplier to create a drawing to meet the requirements.

[0040] By standardizing the design of the offset block, the force direction deviation of the six-component force sensor body caused by the installation offset of the six-component force test wheel hub is avoided, ensuring that the geometric center of the test wheel coincides with the measurement center of the six-component force sensor body, and reducing data distortion in subsequent tests.

[0041] Step 1012: Determine the wheel hub mounting tires based on the wheel size of the test vehicle.

[0042] By matching the tire and wheel hub sizes, the error in the force direction of the six-component force sensor body caused by installation deviation is eliminated. The four six-component force test wheel hubs are then installed with four corresponding wheel hub sizes (such as 21 inches) and tires are installed for later use.

[0043] Step 1013: Determine the six-component force sensor adapter plate based on the wheel size of the test vehicle.

[0044] Specifically, prepare the outer components of the six-component force sensor body, namely the six-component force sensor adapter plate: prepare four six-component force sensor adapter plates with the same hole type as the original vehicle (e.g., six holes). If no adapter is available, you need to disassemble a six-component force sensor body of another type (e.g., five holes) and match it with the adapter plate (e.g., six holes) to form a compatible type.

[0045] The optimized design of the adapter plate can prevent the loss of XYZ axial force or torque components due to improper installation.

[0046] Through the collaborative design of the offset block, wheel hub mounting tire, and six-component force sensor adapter plate, the error is minimized throughout the entire process, from installation position and tire fit to sensor connection. By eliminating installation errors and dynamic interference, the data of the six-component force sensor body (the collected results) is highly consistent with the actual force state.

[0047] Based on the above embodiments, in this embodiment, the six-component force sensor configuration unit is installed on the test vehicle and connected to the test equipment, specifically including steps 1021 to 1023: Step 1021: Install the six-component force sensor configuration unit onto the test wheel.

[0048] Specifically, the six-component force sensor adapter plate (such as a six-hole structure) that meets the adaptation requirements is connected to the six-component force test wheel hub (such as a 21-inch wheel) using 40 special bolts (torque 25Nm) to form four wheels integrating the six-component force sensor body. The six-component force test wheel hub must be a special component with the tire skin already installed to ensure the mechanical coupling between the tire and the wheel hub. Subsequently, based on the calculated offset block thickness parameters, the offset block that meets the requirements is fixed to the wheel structure with a set torque (such as torque 120Nm).

[0049] Step 1022: Install the test wheels onto the test vehicle located on the lifting equipment; Further, the four test wheels were mounted onto the chassis of the lifting equipment using a torque of 120 Nm, achieving a rigid connection between the test wheels and the test platform. Finally, the ID line (sensor identification line), PD line (power distribution line), electronic load unit, slip ring, and slip ring guide rail were integrated and installed at the left front wheel position. Electromagnetic interference was avoided through shielded cable layout, and the concentricity of the slip ring and guide rail was calibrated (error ≤ 0.02 mm) to ensure signal stability under rotational conditions. When connecting the six-component force sensor body to the slip ring, one end of the six-component force communication line was connected to the six-component force interface end on the slip ring. The six-component force communication line was bundled together at the left rear seat position using a combination of nylon cable ties, self-adhesive cable ties, and black electrical tape.

[0050] This process systematically eliminates installation errors and ensures accurate acquisition of six-component force data by using a six-hole matching design between the six-component force sensor adapter plate and the six-component force test hub, optimizing the offset block thickness, and dynamically calibrating the slip ring.

[0051] Step 1023: Connect the six-component force sensor body to the test equipment and arrange the six-component force sensor communication line to meet the arrangement requirements.

[0052] Specifically, in this step, the six-component force sensor body is connected to the six-component force testing equipment.

[0053] Securely fasten the six-component force testing equipment to the center armrest of the vehicle using cable ties, ensuring the equipment remains stable during testing. Then, connect the four six-component force sensor communication cables to holes 1-2-3-4 on the six-component force testing equipment in the order of left front wheel, right front wheel, left rear wheel, and right rear wheel (hole numbers correspond one-to-one with wheel positions). Simultaneously, connect the power cord and network cable to the interface of the six-component force testing equipment, with the other end of the network cable connected to a computer pre-installed with the six-component force testing software to ensure real-time data transmission. Connect the CAN communication port of the six-component force testing equipment to the CAN1 and CAN2 ports of the data sampling equipment via CAN signal cables to achieve multi-channel synchronous sampling. Finally, after confirming that all cable connections are correct, connect the power cord and turn on the power to the testing equipment.

[0054] It should be noted that when arranging the communication lines of the six-component force sensor, the six-component force sensor communication lines should be arranged such that there is a preset clearance distance between the six-component force communication lines and the rotating parts, the six-component force communication lines meet the relaxation standard, and the six-component force communication lines do not cross each other, so as to meet the arrangement requirements of the six-component force sensor communication lines.

[0055] Specifically, the following principles apply to the layout of the six-component force communication lines: First, ensure that the six-component force communication lines do not interfere with rotating parts (such as tires), and avoid the tire's movement trajectory to prevent signal interruption or physical damage due to friction or entanglement; second, when crossing two relatively moving parts (such as wheels and chassis), sufficient slack should be reserved to avoid concentrated tensile stress; third, the principle of proximity should be adopted, and the lines should be routed as close as possible to the required path, prioritizing the shortest path between the six-component force sensor body and the testing equipment to ensure sufficient six-component force communication lines; fourth, the principle of aesthetics should be followed, and multiple six-component force communication lines should be grouped together using cable trays or cable ties to avoid crossing or spanning, thereby improving maintenance efficiency and system stability; finally, all six-component force communication lines should be bundled together and closed to the left rear seat inside the vehicle, using waterproof tape and metal clips for double fixation to ensure that the six-component force communication lines do not loosen in complex vibration environments, and to facilitate later troubleshooting.

[0056] Based on the above embodiments, in this embodiment, after installing the six-component force sensor configuration unit on the test vehicle and connecting the six-component force sensor configuration unit to the test equipment, before generating the wheel channel waveform diagram based on the preset wheel six-component force parameters, the method further includes: adjusting the six-component force sensor configuration unit so that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters.

[0057] Specifically, this includes: first, setting the lever arm parameters based on the wheel size of the test vehicle; then, adjusting the wheel angle parameters displayed on the test equipment and the actual wheel angle parameters by setting the angle to zero; finally, rotating the wheel to make the wheel angle parameters collected by the test equipment consistent with the actual wheel angle parameters, thus completing the debugging of the six-component force sensor configuration unit.

[0058] Specifically, first, open the computer with the software for the six-component force testing device installed, double-click the software to enter the main interface, expand all menus using the "Browse All" function, and ensure that the software has multi-channel data sampling capability; in the "Measurement Display" interface, check the real-time data of the left front wheel (such as angle, lever arm, etc.). In the "Signal Settings - Wheel Settings - Lever Arm" module, enter the corresponding lever arm size, such as 129mm for a 21-inch wheel hub. After entering the value, save the configuration.

[0059] Then, perform signal offset adjustment and angle zeroing adjustment: Rotate the tire so that the valve core notch of the six-component force sensor adapter plate is aligned directly upwards, and ensure that the slip ring rod is vertical; start the "signal offset driver" and rotate the tire clockwise until the signal offset progress is 100% complete; trigger the "set angle offset to zero" function through the software interface to zero the initial angle of the six-component force sensor body, eliminating any mechanical offset that may have occurred during installation, and then enter the "measurement display" menu to monitor whether the angle data is close to zero degrees in real time, ensuring that the baseline zero point of the six-component force sensor body is stable; after zeroing is completed, rotate the tire to the key positions of 90°, 180°, 270°, and 360°, and observe the consistency between the wheel angle parameters and the actual wheel angle parameters; if the data matching degree meets the standard, it indicates that the six-component force sensor configuration unit of the tire has been debugged, and the same process needs to be repeated for the right front wheel, left rear wheel, and right rear wheel to ensure the consistency of the four-wheel angle calibration.

[0060] This process systematically eliminates installation errors of the six-component force sensor body through dual calibration of signal offset adjustment and angle zeroing adjustment.

[0061] Based on the above embodiments, in this embodiment, a wheel channel waveform diagram is generated based on preset wheel six-component force parameters, specifically including steps 1031 to 1033: Step 1031: Based on the preset wheel six-component force parameters, configure the initial waveform diagram of the test wheel.

[0062] Before configuration, install the display screen of the data sampling device in the front passenger seat, fix it to the windshield with the built-in suction cup, connect the display screen and the data sampling device with an HDMI cable and a power cable respectively, turn on the power and open the data sampling device software.

[0063] A new test interface was created, and four initial waveform diagrams for each wheel were added. These four initial waveform diagrams were then bound to the six-component force data channels of the left front wheel, right front wheel, left rear wheel, and right rear wheel, respectively. For example, the initial waveform diagram of the left front wheel needed to be bound to the data channel via “TRION-CAN-4 communication interface—CAN13 / 1—message1—LF_Fz_1”; the initial waveform diagram of the right front wheel needed to be bound via “TRION-CAN-4 communication interface—can13 / 1—message3—RF_Fz_2”; the initial waveform diagram of the left rear wheel needed to be bound via “TRION-CAN-4 communication interface—can13 / 2—message1—LR_Fz_3”; and the initial waveform diagram of the right rear wheel needed to be bound via “TRION-CAN-4 communication interface—can13 / 2—message3—RR_Fz_4”.

[0064] Step 1032: Map the preset wheel six-component force parameters to the wheel initial waveform diagram.

[0065] Step 1033: Save the configuration information and generate the wheel channel waveform diagram.

[0066] Specifically, by selecting a specific wheel initial waveform and activating the corresponding data channel, the real-time collected six-component force data is dynamically mapped to the wheel initial waveform, generating the corresponding wheel channel waveform. The binding relationship and display parameters of the wheel channel waveforms of the four wheels are then stored in the data sampling device.

[0067] Based on the above embodiments, in this embodiment, under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment, specifically including steps 1041 to 1043: Step 1041: Select one of the various test conditions and drive the vehicle at the speed corresponding to that test condition to collect the six-component force data corresponding to that test condition.

[0068] Specifically, the vehicle is driven to the required test condition road surface within the automotive proving ground. These test condition road surfaces include cobblestone roads, long-wave roads, short-wave roads, resonance roads, stone slab roads, twisting roads, noise roads, and Belgian roads. The vehicle is then driven at the specified speed for each test condition, and the data sampling equipment is activated to record six-component force data, collecting the corresponding six-component force data for that condition. This six-component force data includes the six-component force data for the left front wheel, the right front wheel, the left rear wheel, and the right rear wheel. It should also be noted that, in this embodiment, to ensure the accuracy of the test, each test condition is run three times.

[0069] Step 1042: Based on the wheel channel waveform diagram and the six component force data corresponding to this working condition, generate the wheel fault waveform diagram corresponding to this working condition; Specifically, the six-component force data of the left front wheel is mapped to the initial waveform diagram of the left front wheel to generate the corresponding left front wheel fault waveform diagram for this working condition; the six-component force data of the right front wheel is mapped to the initial waveform diagram of the right front wheel to generate the corresponding right front wheel fault waveform diagram for this working condition; the six-component force data of the left rear wheel is mapped to the initial waveform diagram of the left rear wheel to generate the corresponding left rear wheel fault waveform diagram for this working condition; and the six-component force data of the right rear wheel is mapped to the initial waveform diagram of the right rear wheel to generate the corresponding right rear wheel fault waveform diagram for this working condition.

[0070] Step 1043: Continue in this manner to obtain the wheel fault waveform diagrams corresponding to all test conditions.

[0071] Specifically, conduct the remaining test conditions and mark and distinguish the various test conditions until all required conditions are completed, and obtain the wheel fault waveform diagrams corresponding to all test conditions.

[0072] Based on the above embodiments, in this embodiment, determining whether the wheel fault waveform is normal specifically includes: Determine if there are missing channel signals in the wheel fault waveform diagram, determine if the channel signals in the wheel fault waveform diagram are zero, and determine if the oscillation amplitude of the wheel fault waveform diagram is greater than the set value. If all values ​​are negative, the six-component force data is normal; otherwise, the wheel fault waveform diagram is abnormal.

[0073] Specifically, abnormal six-component force data usually manifests as signal loss or signal instability, requiring a systematic investigation combining hardware status and software logic: If the signal channel of a certain wheel (such as the left front wheel) in the wheel fault waveform diagram shows data stagnation or disappearance, it is determined that the channel signal of that wheel fault waveform diagram is missing. If there is a signal missing, it may be due to signal interruption, communication line failure, or the six-component force communication cable connector coming loose. In this case, the connector needs to be reconnected. If the six-component force sensor communication cable is disconnected, the six-component force sensor communication cable line needs to be checked to find the disconnection point and connect the line.

[0074] It is necessary to determine whether the six-component force channel signal is constantly approaching zero and whether the oscillation amplitude of the wheel fault waveform is greater than the set value. If this is the case, it may be a fault in the communication line of the six-component force sensor or a fault in the electronic unit. If this is the case, the line or electronic unit needs to be replaced.

[0075] If any of these conditions exist and the wheel fault waveform is abnormal, investigate and resolve the cause: After the test, confirm each working condition one by one. If a fault is found, find the data corresponding to that working condition, find the cause according to the method for judging whether the wheel fault waveform is normal, and resolve it. Then repeat steps 102 to 105 until the data is completely correct.

[0076] If the wheel fault waveform is normal, it means that the six-component force test data is normal. After the test, after confirming that each working condition is correct, find the data corresponding to each working condition, decompose the data of each working condition, and save it.

[0077] Simultaneously, a test report must be issued: After repeated final confirmation, if the six-component force test data is correct, a test report can be issued. The report includes: 1. Photo confirmation, including an overview of the test vehicle; 2. Confirmation of test vehicle parameter information, including vehicle model, prototype VIN code, tire specifications, and tire pressure; 3. Confirmation of testing time and location; 4. Testing basis: Each test requires a road load acquisition test outline; 5. Confirmation of test load: Depending on the requirements, there will be specific requirements for no-load, half-load, and full-load conditions; 6. Testing conditions: Data is collected according to the required load conditions and the prescribed route, with three sets of valid data collected for each load condition, a sampling frequency of 1000Hz, and the output data file format being rsp; 7. Test channel details: including channel name and unit measurement point information; 8. Measurement point installation details, including the name, channel number, manufacturer / model / number, and polarity of each channel.

[0078] This application provides a detailed, intuitive, and easy-to-understand test method for the six-component forces of a vehicle. Through detailed step-by-step instructions, it offers a one-stop explanation of the entire test lifecycle, from task acceptance to report issuance. This vehicle six-component force test method is applicable to traditional fuel vehicles, pure electric vehicles, hybrid vehicles, natural gas and hydrogen fuel cell vehicles; it is suitable for sedans, SUVs, and commercial vehicles. The method is highly operable, with detailed operating instructions for each step, making it particularly suitable for beginners. Furthermore, the method is highly standardized. By standardizing the measurement of the six components of the vehicle, it minimizes data errors from measurements taken by the same person at different times for the same vehicle, or from measurements taken by different people at the same time for the same vehicle, thus forming a unified and highly operable test method for the six components of the vehicle.

[0079] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0080] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 said element.

[0081] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this 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 this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for testing six components of force on a whole vehicle, characterized in that, It includes: Based on the wheel size of the test vehicle, determine the appropriate six-component force sensor configuration unit; The six-component force sensor configuration unit is installed on the test vehicle and connected to the test equipment; Based on the preset six-component force parameters of the wheel, a wheel channel waveform diagram is generated; Under test conditions, a wheel fault waveform diagram is generated based on the six-component force data and wheel channel waveform diagram collected by the test equipment. Determine if the waveform diagram of a wheel fault is normal; If so, end the experiment and save the six-component force test data; Otherwise, investigate the cause of the abnormality.

2. The vehicle six-component force test method as described in claim 1, characterized in that, After installing the six-component force sensor configuration unit on the test vehicle and connecting the six-component force sensor configuration unit to the test equipment, before generating the wheel channel waveform diagram based on the preset wheel six-component force parameters, the method further includes: Adjust the configuration unit of the six-component force sensor to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters.

3. The vehicle six-component force test method as described in claim 2, characterized in that, Debug the six-component force sensor configuration unit to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters. Specifically, this includes: The lever arm parameters are set based on the wheel size of the test vehicle; Adjust the wheel angle parameters displayed on the test equipment and the actual wheel angle parameters by setting the angle to zero; Rotate the wheel to ensure that the wheel angle parameters collected by the test equipment are consistent with the actual wheel angle parameters, and complete the debugging of the six-component force sensor configuration unit.

4. The vehicle six-component force test method as described in claim 1, characterized in that, Based on the wheel size of the test vehicle, a suitable six-component force sensor configuration unit was determined, specifically including: The offset blocks are configured to meet the wheel assembly requirements of the test vehicle; Based on the wheel size of the test vehicle, determine the tire material to be installed on the wheel hub; Based on the wheel size of the test vehicle, the six-component force sensor adapter disk was determined.

5. The vehicle six-component force test method as described in claim 4, characterized in that: The offset block thickness is set to be equal to the difference between the distance from the center of the six-component test wheel hub to the mounting surface and the distance from the center of the original wheel hub to the mounting surface, so that the offset block meets the wheel assembly requirements of the test vehicle.

6. The vehicle six-component force test method as described in claim 1, characterized in that, The six-component force sensor configuration unit is installed on the test vehicle and connected to the test equipment, specifically including: The six-component force sensor configuration unit was installed on the test wheel; The test wheels were mounted on the test vehicle located on the lifting equipment; Connect the six-component force sensor body to the test equipment and arrange the six-component force sensor communication line to meet the arrangement requirements.

7. The vehicle six-component force test method as described in claim 6, characterized in that: The communication lines of the six-component force sensor are arranged such that there is a preset clearance between the six-component force communication lines and the rotating parts, the six-component force communication lines meet the relaxation standard, and the six-component force communication lines do not cross each other, so that the six-component force sensor communication lines meet the arrangement requirements.

8. The vehicle six-component force test method as described in claim 1, characterized in that, Based on preset wheel force parameters, a wheel channel waveform diagram is generated, specifically including: Based on the preset wheel six-component force parameters, configure the initial waveform diagram of the test wheel; Map the preset wheel six-component force parameters to the initial wheel waveform diagram; Save the configuration information and generate a waveform diagram of the wheel channel.

9. The vehicle six-component force test method as described in claim 1, characterized in that, To determine if the waveform of a wheel fault is normal, the following steps are required: Determine if there are any missing channel signals in the wheel fault waveform diagram; Determine if the channel signal of the wheel fault waveform is zero; Determine whether the oscillation amplitude of the wheel fault waveform exceeds the set value; If all values ​​are negative, the six-component force data is normal; otherwise, the wheel fault waveform diagram is abnormal.

10. The vehicle six-component force test method as described in claim 1, characterized in that, Under test conditions, based on the six-component force data and wheel channel waveform diagram collected by the test equipment, a wheel fault waveform diagram is generated, specifically including: Among various test conditions, select one test condition and drive at the corresponding vehicle speed to collect the corresponding six-component force data. Based on the wheel channel waveform diagram and the six component force data corresponding to this working condition, generate the wheel fault waveform diagram corresponding to this working condition. By analogy, obtain the wheel fault waveform diagrams corresponding to all test conditions.

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