Dynamic pressure distribution device for tire to pass through curb at low speed and control method of dynamic pressure distribution device

Abstract

The invention relates to the technical field of tire performance testing, in particular to a tire low-speed curb dynamic pressure distribution device and a control method thereof. Comprising the following steps: fixing a to-be-tested tire to an adjusting unit, and setting working parameters of the adjusting unit according to a detection plan; obtaining performance test data of a to-be-tested tire and operation parameters of an adjusting unit; setting a correction parameter of the performance test data according to the operation parameter of the adjusting unit, and generating a performance evaluation value according to a correction result; according to the dynamic pressure distribution device for the tire to pass through the curb at the low speed, a square obstacle structure is used for simulating a curb structure, a sensing module is additionally arranged on the square obstacle structure to collect dynamic pressure distribution test data of the tire, and meanwhile, an adjusting unit is additionally arranged to provide a load in the vertical direction for the tire to be tested; and the to-be-tested tire is provided with the heeling and lateral deviation functions, so that the performance test of the low-speed curb of the tire is realized, and the test efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tire performance testing, and in particular to a dynamic pressure distribution device for a tire passing a curb at a low speed and a control method thereof. Background Art

[0002] The dynamic pressure distribution of a tire can accurately reflect the actual situation of the tire during driving. Its shape and pressure distribution not only affect the tire's wear, durability, grip, slipperiness and safety, but also directly affect the vehicle's load-bearing, traction and handling performance.

[0003] The existing indoor tire dynamic pressure distribution test conditions are mostly tested on flat roads, and there are no relevant tests on curb conditions, especially the pressure distribution measurement of the contact surface when the tire passes the side and top of the curb. Therefore, it is impossible to conduct a comprehensive and accurate evaluation of the tire's performance. Summary of the invention

[0004] The purpose of this application is: to solve the above-mentioned technical problems, this application provides a dynamic pressure distribution device for a tire passing a curb at low speed and a control method thereof, aiming to simulate the working conditions of a vehicle tire passing a curb and improve the evaluation accuracy of tire performance.

[0005] In some embodiments of the present application, the dynamic pressure distribution device for a tire passing a curb at a low speed utilizes a square obstacle structure to simulate a curb structure, and a sensor module is added to the square obstacle structure to collect dynamic pressure distribution test data of the tire. At the same time, by adding an adjustment unit, a vertical load is provided to the tire to be tested, and the tire to be tested is provided with roll and lateral deviation functions, thereby achieving performance testing of the tire passing the curb at a low speed and improving test efficiency.

[0006] In some embodiments of the present application, a test unit is added to simulate the working condition of a vehicle tire passing over a curb, and the dynamic three-dimensional force parameters and tire contact parameters of the tire to be tested are collected in real time. The collected data is processed by a central control unit, thereby improving the evaluation accuracy of tire performance.

[0007] In some embodiments of the present application, a method for controlling a dynamic pressure distribution device for a tire passing a curb at low speed is provided, comprising:

[0008] Fix the tire to be tested to the conditioning unit and set the working parameters of the conditioning unit according to the test plan;

[0009] Obtaining performance test data of the tire to be tested and operating parameters of the adjustment unit;

[0010] Setting correction parameters of the performance test data according to the operating parameters of the adjustment unit, and generating a performance evaluation value according to the correction results;

[0011] The performance test data include: dynamic three-axis force parameters and tire contact parameters.

[0012] In some embodiments of the present application, setting correction parameters of performance test data includes:

[0013] Generate a standard load curve based on the working parameters of the regulating unit;

[0014] Generate actual load curve according to the operating parameters of the regulating unit;

[0015] Establish multiple time intervals according to the test duration, and generate the operating difference series A between the standard load curve and the actual load curve in each time interval, A = (a1, a2...an), where n is the time interval series and ai is the operating difference of the i-th time interval;

[0016] Generate a modified evaluation value b based on the running difference series A;

[0017]

[0018] Wherein, e1 is the preset first weight coefficient; e2 is the preset second weight coefficient; Q1 is the preset first fixed coefficient; Q2 is the preset second fixed coefficient; a' is the standard operating difference; αi is the selection coefficient; when ai-a'>0, αi=1; when ai-a'<0, αi=1;

[0019] The operation difference threshold value A1 is set according to the corrected evaluation value.

[0020] In some embodiments of the present application, when setting the correction parameters of the performance test data, the method further includes:

[0021] If ai>A1, eliminate the i-th time interval;

[0022] If ai≤A1, set the i-th time interval as the first-level time interval;

[0023] According to the elimination results, a corrected first-level time interval sequence C is established, C = (c1, c2...cm), where m is the number of first-level time intervals; ci is the i-th first-level time interval;

[0024] Get the performance test data for each first-level time interval.

[0025] In some embodiments of the present application, when generating a performance evaluation value according to the correction result, it includes:

[0026] Generate initial evaluation values ​​for each first-level time interval according to a preset performance evaluation model;

[0027] Establish an initial evaluation value sequence D = (d1, d2...dm), where di is the initial evaluation value of the i-th first-level time interval;

[0028] Generate a performance evaluation value k according to the initial evaluation value sequence D;

[0029]

[0030] Among them, e3 is the preset third weight coefficient, e4 is the preset fourth weight coefficient; Q3 is the preset third fixed coefficient; Q4 is the preset fourth fixed coefficient; βi is the compensation coefficient set based on the operating difference of the i-th primary time interval; Δd is the average value of all data of the initial evaluation value series D.

[0031] In some embodiments of the present application, when generating the initial evaluation value of each primary time interval, it includes:

[0032] Select the target first-level time interval according to the first-level time interval sequence C;

[0033] Obtaining dynamic three-axis force parameters and tire contact parameters of the tire to be tested within a target first-level time interval;

[0034] Generate a first reference value H1 according to the dynamic three-axis force parameters;

[0035] generating a second reference value H2 according to the tire contact pad parameter;

[0036] Generate an initial evaluation value d of the target primary time interval according to the first reference value H1 and the second reference value H2;

[0037] d=e5*H1+e6*H2;

[0038] Among them, e5 is the preset fifth weight coefficient; e6 is the preset sixth weight coefficient.

[0039] In some embodiments of the present application, a dynamic pressure distribution device for a tire passing a curb at low speed is provided, comprising:

[0040] Base;

[0041] The moving unit comprises a first power member and a guide rail, wherein the first power member is used to control the moving speed of the base, and the guide rail is used to control the moving direction of the base;

[0042] A test unit is arranged at a fixed point, and when the tire to be tested passes through the test unit at a low speed, the test unit collects performance test data of the tire to be tested;

[0043] An adjusting unit connected to the base, the adjusting unit being used to fix the position of the tire to be tested and to adjust the state parameters of the tire to be tested according to preset parameters;

[0044] The central control unit is connected to the test unit via a wireless signal, and is used to obtain performance test data and generate a tire performance evaluation value.

[0045] In some embodiments of the present application, the testing unit includes:

[0046] A square obstacle structure to simulate a curb structure;

[0047] A first sensor is disposed on the surface of the square obstacle. When the tire to be tested passes through the square obstacle at a low speed, the first sensor is used to collect dynamic three-axis force parameters of the tire to be tested;

[0048] A test platform connected to the square obstacle via a first support rod;

[0049] The second sensor is arranged on the surface of the test platform. When the tire to be tested passes through a square obstacle at a low speed, the second sensor is used to collect tire contact parameters of the tire to be tested.

[0050] In some embodiments of the present application, the adjusting unit includes:

[0051] case;

[0052] A tilting structure, wherein the housing is connected to the base through the tilting structure, and the tilting structure is used to control the tilting angle of the adjusting unit;

[0053] A side-slip structure, used to control the side-slip angle of the tire to be tested; the side-slip structure includes a second power member and a first rotating shaft;

[0054] The second power member is disposed on the housing, and the first rotating shaft is disposed in the housing;

[0055] The second power member is connected to the first rotating shaft through a first pull rod; an angle sensor is provided at one end of the first rotating shaft;

[0056] A loading structure connected to the first rotating shaft and used to control the load of the tire to be tested;

[0057] The loading structure comprises:

[0058] A screw rod connected to the first rotating shaft;

[0059] A third power member is provided at one end of the screw rod and is used to control the displacement direction of the screw rod;

[0060] A main shaft is connected to the screw rod, and the main shaft is used to fix the tire to be tested.

[0061] In some embodiments of the present application, the central control unit includes:

[0062] A first control module, used to set working parameters of the adjustment unit according to the detection plan;

[0063] A first processing module, used for obtaining performance test data of the tire to be tested and operating parameters of the adjustment unit;

[0064] A second processing module, used for setting correction parameters of the performance test data according to the operating parameters of the adjustment unit;

[0065] The third processing module is used to generate a performance evaluation value according to the correction result.

[0066] Compared with the prior art, the dynamic pressure distribution device and control method of a tire passing a curb at a low speed in the embodiment of the present application have the following beneficial effects:

[0067] The dynamic pressure distribution device for tires passing curbs at low speeds uses a square obstacle structure to simulate a curb structure, and adds a sensor module to the square obstacle structure to collect the dynamic pressure distribution test data of the tire. At the same time, by adding an adjustment unit, a vertical load is provided for the tire to be tested, and the tire to be tested is provided with roll and sideslip functions, thereby realizing the performance test of the tire passing curbs at low speeds and improving the test efficiency.

[0068] By adding a test unit to simulate the working condition of a vehicle tire passing over a curb, the dynamic three-dimensional force parameters and tire contact parameters of the tire to be tested are collected in real time, and the collected data is processed by the central control unit, thereby improving the accuracy of tire performance evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 It is a flow chart of a method for controlling a dynamic pressure distribution device for a tire passing a curb at a low speed in a preferred embodiment of the present application.

[0070] Figure 2 It is a structural schematic diagram of a dynamic pressure distribution device for a tire passing a curb at a low speed in a preferred embodiment of the present application.

[0071] Figure 3 It is another structural schematic diagram of a dynamic pressure distribution device for a tire passing a curb at a low speed in the preferred embodiment of the embodiment of the present application.

[0072] Base 100; test unit 200; roll structure 310; housing 320; second power member 331; first rotating shaft 332; first pull rod 333; angle sensor 334; screw rod 341; third power member 342; main shaft 343; tire to be tested 400. DETAILED DESCRIPTION

[0073] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0074] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation on the present application.

[0075] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0076] In the description of this application, it should be noted that, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] like Figure 1 As shown, a control method for a dynamic pressure distribution device of a tire passing a curb at a low speed in a preferred embodiment of the present application includes:

[0078] S101: Fixing the tire to be tested to the adjustment unit, and setting the working parameters of the adjustment unit according to the test plan;

[0079] S102: Acquire performance test data of the tire to be tested and operating parameters of the adjustment unit;

[0080] S103: setting correction parameters of the performance test data according to the operating parameters of the adjustment unit, and generating a performance evaluation value according to the correction result;

[0081] Performance test data include: dynamic three-axis force parameters and tire contact parameters.

[0082] Specifically, the correction parameters of the performance test data are set, including:

[0083] Generate a standard load curve based on the working parameters of the regulating unit;

[0084] Generate actual load curve according to the operating parameters of the regulating unit;

[0085] Establish multiple time intervals according to the test duration, and generate the operating difference series A between the standard load curve and the actual load curve in each time interval, A = (a1, a2...an), where n is the time interval series and ai is the operating difference of the i-th time interval;

[0086] Generate a modified evaluation value b based on the running difference series A;

[0087]

[0088] Wherein, e1 is the preset first weight coefficient; e2 is the preset second weight coefficient; Q1 is the preset first fixed coefficient; Q2 is the preset second fixed coefficient; a' is the standard operating difference; αi is the selection coefficient; when ai-a'>0, αi=1; when ai-a'<0, αi=1;

[0089] The operation difference threshold value A1 is set according to the corrected evaluation value.

[0090] Specifically, when setting the correction parameters of the performance test data, it also includes:

[0091] If ai>A1, eliminate the i-th time interval;

[0092] If ai≤A1, set the i-th time interval as the first-level time interval;

[0093] According to the elimination results, a corrected first-level time interval sequence C is established, C = (c1, c2...cm), where m is the number of first-level time intervals; ci is the i-th first-level time interval;

[0094] Get the performance test data for each first-level time interval.

[0095] Specifically, the higher the correction evaluation value is, the more unstable the current equipment is during operation, and the corresponding operation difference threshold should be lower, so as to screen the test data.

[0096] It can be understood that in the above embodiment, multiple time intervals are established according to the test duration, and based on the operating parameters of the debugging unit in each time interval, it is judged whether the test operation process meets the standards, and some test data are eliminated based on the judgment results, thereby eliminating the interference of the test equipment itself on the test data and improving the evaluation accuracy of tire performance.

[0097] In a preferred embodiment of the present application, when generating a performance evaluation value according to the correction result, it includes:

[0098] Generate initial evaluation values ​​for each first-level time interval according to a preset performance evaluation model;

[0099] Establish an initial evaluation value sequence D = (d1, d2...dm), where di is the initial evaluation value of the i-th first-level time interval;

[0100] Generate a performance evaluation value k according to the initial evaluation value sequence D;

[0101]

[0102] Among them, e3 is the preset third weight coefficient, e4 is the preset fourth weight coefficient; Q3 is the preset third fixed coefficient; Q4 is the preset fourth fixed coefficient; βi is the compensation coefficient set based on the operating difference of the i-th primary time interval; Δd is the average value of all data of the initial evaluation value series D.

[0103] Specifically, the model is normalized by presetting the third fixed coefficient and the fourth fixed coefficient so that each parameter in the model is in the same value range.

[0104] Specifically, when generating the initial evaluation value of each first-level time interval, it includes:

[0105] Select the target first-level time interval according to the first-level time interval sequence C;

[0106] Obtaining dynamic three-axis force parameters and tire contact parameters of the tire to be tested within a target first-level time interval;

[0107] Generate a first reference value H1 according to the dynamic three-axis force parameters;

[0108] generating a second reference value H2 according to the tire contact pad parameter;

[0109] Generate an initial evaluation value d of the target primary time interval according to the first reference value H1 and the second reference value H2;

[0110] d=e5*H1+e6*H2;

[0111] Among them, e5 is the preset fifth weight coefficient; e6 is the preset sixth weight coefficient.

[0112] Specifically, tire contact parameters include contact shape, effective contact area, total contact area, contact length, contact width, shoulder contact length, contact pressure and other parameters.

[0113] Specifically, standard reference values ​​for various performance measurement data are set to evaluate the tire to be tested. The larger the first reference value, the more the dynamic three-axis force parameters of the tire to be tested in the current first-level time interval are in line with the standard; the larger the second reference evaluation value, the more the tire contact parameters of the tire to be tested in the current first-level time interval are in line with the standard.

[0114] Specifically, the larger the running difference, the smaller the corresponding compensation coefficient and the larger the initial evaluation value, which means that the performance of the tested tire in the corresponding first-level time interval is higher.

[0115] Specifically, in the above embodiment, an evaluation model is established to comprehensively evaluate the performance data in each primary time interval, and at the same time, the performance stability of the tire to be tested during the test is evaluated, thereby achieving comprehensive detection of the tire to be tested.

[0116] like Figure 2 - Figure 3 As shown, based on another preferred embodiment of a control method of a dynamic pressure distribution device for a tire passing a curb at a low speed in any of the above preferred embodiments, this preferred embodiment provides a dynamic pressure distribution device for a tire passing a curb at a low speed, comprising:

[0117] Base 100;

[0118] The moving unit includes a first power member and a guide rail, wherein the first power member is used to control the moving speed of the base 100, and the guide rail is used to control the moving direction of the base 100;

[0119] The test unit 200 is set at a fixed point. When the tire 400 to be tested passes through the test unit 200 at a low speed, the test unit 200 collects performance test data of the tire 400 to be tested;

[0120] An adjustment unit connected to the base 100, the adjustment unit is used to fix the position of the tire 400 to be tested and adjust the state parameters of the tire 400 to be tested according to preset parameters;

[0121] The central control unit is connected to the test unit 200 via a wireless signal, and is used to obtain performance test data and generate a tire performance evaluation value.

[0122] Specifically, the test unit 200 includes:

[0123] A square obstacle structure to simulate a curb structure;

[0124] The first sensor is disposed on the surface of the square obstacle. When the tire 400 to be tested passes through the square obstacle at a low speed, the first sensor is used to collect dynamic three-axis force parameters of the tire 400 to be tested;

[0125] A test platform is connected to the square obstacle via a first support rod;

[0126] The second sensor is disposed on the surface of the test platform. When the tire 400 to be tested passes through a square obstacle at a low speed, the second sensor is used to collect tire contact parameters of the tire 400 to be tested.

[0127] Specifically, the first sensor is preferably a piezoelectric three-component force sensor. Installed on a square obstacle structure, the multi-directional sensor can simultaneously measure three mutually perpendicular forces, namely, traction (longitudinal force) Fx, lateral force (transverse force) Fy and vertical force (normal force) Fz, (x is the driving direction, y is the wheel axis, and z is the normal to the ground contact surface).

[0128] Specifically, the second sensor is preferably a contact pressure sensor, which is mainly a piezoresistive sheet sensor that can record tire pressure distribution in real time. The electrical three-component force sensor is a multi-directional force sensor (such as the Swiss Kistler piezoelectric three-component force sensor). The contact pressure sensor is embedded in the test platform, and a protective film needs to be laid on its surface. The protective film needs to have properties such as compression resistance, tensile strength, impact resistance, and wear resistance.

[0129] Specifically, the second sensor can be used to obtain test parameters such as the contact shape, effective contact area, total contact area, contact length, contact width, shoulder contact length, and contact pressure under dynamic changes of the tire when the tire passes over a curb at a low speed.

[0130] In a preferred embodiment of the present application, the adjustment unit includes:

[0131] Housing 320;

[0132] A tilting structure 310, wherein the housing 320 is connected to the base 100 via the tilting structure, and the tilting structure 310 is used to control the tilting angle of the adjustment unit;

[0133] A side-slip structure, used to control the side-slip angle of the tire 400 to be tested; the side-slip structure includes a second power member 331 and a first rotating shaft 332;

[0134] The second power member 331 is disposed on the housing 320 , and the first rotating shaft 332 is disposed in the housing 320 ;

[0135] The second power member 331 is connected to the first rotating shaft 332 through a first pull rod 333; an angle sensor 334 is provided at one end of the first rotating shaft 332;

[0136] A loading structure connected to the first rotating shaft 332 and used to control the load of the tire to be tested;

[0137] The loading structure includes:

[0138] The screw rod 341 is connected to the first rotating shaft 332;

[0139] The third power member 342 is provided at one end of the screw rod 341 and is used to control the displacement direction of the screw rod 341;

[0140] The main shaft 343 is connected to the screw rod 341 and is used to fix the tire to be tested.

[0141] Specifically, the loading structure utilizes the main shaft 343 to move up and down to provide the required load for the tire 400 to be tested and to feedback the displacement and load data required for the test through the displacement and load sensors.

[0142] Specifically, the side-biasing structure utilizes the second power member 331 to twist the first pull rod 333 and thereby drives the first rotating shaft 332 to rotate. The angle sensor senses the rotation angle, and the tire 400 to be tested will side-bias accordingly.

[0143] Specifically, the central control unit includes:

[0144] A first control module, used to set working parameters of the adjustment unit according to the detection plan;

[0145] A first processing module, used for acquiring performance test data of the tire 400 to be tested and operating parameters of the adjustment unit;

[0146] A second processing module, used for setting correction parameters of the performance test data according to the operating parameters of the adjustment unit;

[0147] The third processing module is used to generate a performance evaluation value according to the correction result.

[0148] According to the first concept of the present application, the dynamic pressure distribution device for a tire passing a curb at a low speed utilizes a square obstacle structure to simulate a curb structure, and a sensor module is added to the square obstacle structure to collect dynamic pressure distribution test data of the tire. At the same time, by adding an adjustment unit, a vertical load is provided to the tire to be tested, and the tire to be tested is provided with roll and lateral deviation functions, thereby realizing a performance test of the tire passing a curb at a low speed and improving the test efficiency.

[0149] According to the second concept of the present application, by adding a test unit to simulate the working condition of a vehicle tire passing over a curb, the dynamic three-dimensional force parameters and tire contact parameters of the tire to be tested are collected in real time, and the collected data is processed by the central control unit, thereby improving the evaluation accuracy of tire performance.

[0150] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A method for controlling a dynamic pressure distribution device for a tire passing a curb at low speed, characterized in that: include: Fix the tire to be tested to the conditioning unit and set the working parameters of the conditioning unit according to the test plan; Obtaining performance test data of the tire to be tested and operating parameters of the adjustment unit; Setting correction parameters of the performance test data according to the operating parameters of the adjustment unit, and generating a performance evaluation value according to the correction results; The performance test data include: dynamic three-axis force parameters and tire contact parameters.

2. The control method of the dynamic pressure distribution device for a tire passing a curb at low speed according to claim 1, characterized in that: Set correction parameters for performance test data, including: Generate a standard load curve based on the working parameters of the regulating unit; Generate actual load curve according to the operating parameters of the regulating unit; Establish multiple time intervals according to the test duration, and generate the operating difference series A between the standard load curve and the actual load curve in each time interval, A = (a1, a2...an), where n is the time interval series and ai is the operating difference of the i-th time interval; Generate a modified evaluation value b based on the running difference series A; Wherein, e1 is the preset first weight coefficient; e2 is the preset second weight coefficient; Q1 is the preset first fixed coefficient; Q2 is the preset second fixed coefficient; a' is the standard operating difference; αi is the selection coefficient; when ai-a'>0, αi=1; when ai-a'<0, αi=1; The operation difference threshold value A1 is set according to the corrected evaluation value.

3. The control method of the dynamic pressure distribution device for a tire passing a curb at low speed according to claim 2, characterized in that: The setting of the correction parameters of the performance test data also includes: If ai>A1, eliminate the i-th time interval; If ai≤A1, set the i-th time interval as the first-level time interval; According to the elimination results, a corrected first-level time interval sequence C is established, C = (c1, c2...cm), where m is the number of first-level time intervals; ci is the i-th first-level time interval; Get the performance test data for each first-level time interval.

4. The control method of the dynamic pressure distribution device for a tire passing a curb at low speed according to claim 3, characterized in that: When generating a performance evaluation value based on the correction result, it includes: Generate initial evaluation values ​​for each first-level time interval according to a preset performance evaluation model; Establish an initial evaluation value sequence D = (d1, d2...dm), where di is the initial evaluation value of the i-th first-level time interval; Generate a performance evaluation value k according to the initial evaluation value sequence D; Among them, e3 is the preset third weight coefficient, e4 is the preset fourth weight coefficient; Q3 is the preset third fixed coefficient; Q4 is the preset fourth fixed coefficient; βi is the compensation coefficient set based on the operating difference of the i-th primary time interval; Δd is the average value of all data of the initial evaluation value series D.

5. The control method of the dynamic pressure distribution device for a tire passing a curb at low speed according to claim 3, characterized in that: When generating the initial evaluation value of each first-level time interval, it includes: Select the target first-level time interval according to the first-level time interval sequence C; Obtaining dynamic three-axis force parameters and tire contact parameters of the tire to be tested within a target first-level time interval; Generate a first reference value H1 according to the dynamic three-axis force parameters; generating a second reference value H2 according to the tire contact pad parameter; Generate an initial evaluation value d of the target primary time interval according to the first reference value H1 and the second reference value H2; d=e5*H1+e6*H2; Among them, e5 is the preset fifth weight coefficient; e6 is the preset sixth weight coefficient.

6. A device for distributing dynamic pressure of a tire passing a curb at low speed, using the control method for distributing dynamic pressure of a tire passing a curb at low speed according to any one of claims 1 to 5, characterized in that: include: Base; The moving unit comprises a first power member and a guide rail, wherein the first power member is used to control the moving speed of the base, and the guide rail is used to control the moving direction of the base; A test unit is arranged at a fixed point, and when the tire to be tested passes through the test unit at a low speed, the test unit collects performance test data of the tire to be tested; An adjusting unit connected to the base, the adjusting unit being used to fix the position of the tire to be tested and to adjust the state parameters of the tire to be tested according to preset parameters; The central control unit is connected to the test unit via a wireless signal, and is used to obtain performance test data and generate a tire performance evaluation value.

7. The dynamic pressure distribution device for a tire passing a curb at low speed according to claim 6, characterized in that: The test unit comprises: A square obstacle structure to simulate a curb structure; A first sensor is disposed on the surface of the square obstacle. When the tire to be tested passes through the square obstacle at a low speed, the first sensor is used to collect dynamic three-axis force parameters of the tire to be tested; A test platform connected to the square obstacle via a first support rod; The second sensor is arranged on the surface of the test platform. When the tire to be tested passes through a square obstacle at a low speed, the second sensor is used to collect tire contact parameters of the tire to be tested.

8. The dynamic pressure distribution device for a tire passing a curb at low speed according to claim 7, characterized in that: The adjustment unit comprises: case; A tilting structure, wherein the housing is connected to the base through the tilting structure, and the tilting structure is used to control the tilting angle of the adjusting unit; A side-slip structure, used to control the side-slip angle of the tire to be tested; the side-slip structure includes a second power member and a first rotating shaft; The second power member is disposed on the housing, and the first rotating shaft is disposed in the housing; The second power member is connected to the first rotating shaft through a first pull rod; an angle sensor is provided at one end of the first rotating shaft; A loading structure connected to the first rotating shaft and used to control the load of the tire to be tested; The loading structure comprises: A screw rod connected to the first rotating shaft; A third power member is provided at one end of the screw rod and is used to control the displacement direction of the screw rod; A main shaft is connected to the screw rod, and the main shaft is used to fix the tire to be tested.

9. The dynamic pressure distribution device for a tire passing a curb at low speed according to claim 8, characterized in that: The central control unit comprises: A first control module, used to set working parameters of the adjustment unit according to the detection plan; A first processing module, used for obtaining performance test data of the tire to be tested and operating parameters of the adjustment unit; A second processing module, used for setting correction parameters of the performance test data according to the operating parameters of the adjustment unit; The third processing module is used to generate a performance evaluation value according to the correction result.

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