A system for detecting vehicle body attitude control performance

Abstract

The application provides a kind of detection system of vehicle body posture control performance, the system includes: inertia force loading mechanism, for simulating the inertia force that vehicle is subjected to under different working conditions, and corresponding inertia data is collected;Rotary table mechanism, for providing the test environment of different working conditions for the vehicle;Industrial computer, for receiving the inertia data sent by the inertia force loading mechanism, evaluating the vehicle body posture control performance based on the inertia data, and outputting performance evaluation results;In this way, the detection system of vehicle body posture control performance can simulate the inertia force that vehicle is subjected to under different working conditions, and real-time collect the change characteristics of vehicle body inertia data, provide bench test data for active lateral stabilizer bar system, vehicle body posture control system and other new product development, objectively evaluate the control effect of automobile suspension on vehicle body posture, ensure the driving safety of vehicle, and improve the comfort of vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile suspension, in particular to a detection system for vehicle body posture control performance. BACKGROUND

[0002] In order to obtain good vehicle ride comfort, the stiffness of the automobile suspension is usually designed to be small. Due to the effect of the inertial force of the automobile, in the case of emergency braking, the vertical force of the front and rear wheels will change greatly, and at the same time, the vertical deformation of the suspension will change, which will cause the vehicle body pitch angle to move. Similarly, due to the effect of the inertial force of the automobile, in the case of high-speed turning, the vertical force of the left and right wheels will change greatly, and at the same time, the vertical deformation of the suspension will change, which will cause the vehicle body roll angle to move.

[0003] At present, new technologies such as active lateral stabilizer bar system and vehicle body posture control system are used in automobile suspension to reduce the vehicle body pitch angle in the process of emergency braking and reduce the vehicle body roll angle in the process of high-speed turning.

[0004] However, before leaving the factory, the control effect of the automobile suspension on the vehicle body posture needs to be objectively evaluated to guide the development of new technologies and new products such as active lateral stabilizer bar system and vehicle body posture control system, and to ensure the driving safety and comfort of the automobile. SUMMARY

[0005] In view of the problems in the prior art, the embodiments of the present application provide a detection system and method for vehicle body posture control performance to solve or partially solve the technical problem that the control effect of the automobile suspension on the vehicle body posture cannot be objectively evaluated in the prior art, resulting in that the driving safety and comfort of the automobile leaving the factory cannot be ensured.

[0006] The present application provides a detection system for vehicle body posture control performance, which comprises:

[0007] An inertial force loading mechanism for simulating the inertial force received by the vehicle under different working conditions and collecting corresponding inertial data;

[0008] A rotary table mechanism for providing a test environment for the vehicle under different working conditions;

[0009] An industrial computer for receiving the inertial data sent by the inertial force loading mechanism, evaluating the vehicle body posture control performance based on the inertial data, and outputting the performance evaluation result.

[0010] In the above scheme, the inertial force loading mechanism comprises:

[0011] A base fixed to the ground, wherein a linear guide rail is arranged on the base;

[0012] A sliding block located on the linear guide rail;

[0013] A translation table is located on the slider;

[0014] A linear actuator is connected to the base at one end and to the translation table at the other end.

[0015] In the above solution, the inertial force loading mechanism further comprises:

[0016] A displacement sensor is installed on the linear actuator.

[0017] In the above solution, the inertial force loading mechanism further comprises:

[0018] A one-way acceleration sensor is installed on the translation table.

[0019] In the above solution, the rotary table mechanism comprises:

[0020] An angle sensor is installed in the middle of the translation table.

[0021] A rotary table bearing is installed at both ends of the translation table.

[0022] A rotary table is fixed above the translation table through the rotary table bearing.

[0023] In the above solution, the rotary table mechanism further comprises:

[0024] A motor is installed on the translation table and located on one side of the rotary table bearing.

[0025] A gear is installed on the motor output shaft.

[0026] A gear ring is installed on one side of the rotary table, and the gear ring is engaged with the gear.

[0027] In the above solution, the system further comprises a bidirectional inclination sensor installed in the vehicle to be tested; the vehicle to be tested is placed on the rotary table of the rotary table mechanism.

[0028] In the above solution, the industrial computer is specifically used for:

[0029] When the working condition is an emergency braking condition, the linear actuator is controlled to load at a predetermined frequency, and the pitch angle data collected by the bidirectional inclination sensor and the acceleration data of the one-way acceleration sensor are obtained;

[0030] A first data curve is drawn with the acceleration data as the X-axis and the pitch angle data as the Y-axis, and the slope value of the first data curve is determined;

[0031] A target pitch angle corresponding to a target acceleration is obtained from the first data curve.

[0032] If it is determined that the slope value of the first curve is less than a first slope threshold value and the target pitch angle is less than a pitch angle threshold value, it is determined that the vehicle body posture control performance evaluation result is qualified.

[0033] In the above scheme, the industrial computer is specifically used for:

[0034] When the working condition is a turning working condition, the vehicle is controlled to turn 90 degrees on the basis of the emergency braking working condition, the straight-line actuator is controlled to load according to a preset frequency, and the inclination angle data collected by the bidirectional inclination sensor and the acceleration data of the unidirectional acceleration sensor are acquired;

[0035] A second data curve is plotted with the acceleration data as an X-axis and the inclination angle data as a Y-axis, and a slope value of the second data curve is determined;

[0036] A target inclination angle corresponding to a target acceleration is acquired from the second data curve;

[0037] If it is determined that the slope value of the second curve is less than a second slope threshold value and the target inclination angle is less than an inclination angle threshold value, it is determined that the vehicle body posture control performance evaluation result is qualified.

[0038] In the above scheme, the target acceleration is 4-7 m / s 2 .

[0039] The present application provides a kind of detection system of vehicle body posture control performance, the system includes: inertial force loading mechanism, for simulating the inertial force that vehicle is subjected to under different working conditions, and corresponding inertial data are collected;Rotary table mechanism, for providing the test environment of different working conditions for the vehicle;Industrial computer, for receiving the inertial data sent by the inertial force loading mechanism, the vehicle body posture control performance is evaluated based on the inertial data, and performance evaluation result is output;Thus, the detection system of vehicle body posture control performance can simulate the inertial force that vehicle is subjected to under different working conditions, and the variation characteristics of vehicle body inertial data are collected in real time, provide bench test data for active transverse stabilizer bar system, vehicle body posture control system and other new product development, objectively evaluate the control effect of automobile suspension to vehicle body posture, ensure vehicle driving safety, improve the comfort of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limiting of the application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views.

[0041] In the drawings:

[0042] Figure 1 Fig. 1 shows a schematic diagram of a system for detecting vehicle body posture control performance according to an embodiment of the present application;

[0043] Figure 2 Fig. 2 shows a schematic diagram of a system for detecting vehicle body posture control performance under emergency braking condition according to an embodiment of the present application;

[0044] Figure 3 Fig. 3 shows a schematic diagram of a system for detecting vehicle body posture control performance under high-speed cornering condition according to an embodiment of the present application.

[0045] Legend of reference signs:

[0046] 1-Industrial PC; 101-Base; 102-Straight line guide rail; 103-Sliding block; 104-Translation stage; 105-Straight line actuator; 106-One-way acceleration sensor; 201-Angle sensor; 202-Slewing bearing; 203-Slewing table; 204-Motor; 205-Gear; 301-Bidirectional inclination sensor; 302-Vehicle to be tested. DETAILED DESCRIPTION

[0047] Exemplary embodiments of the present disclosure will be described in detail with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0048] An embodiment of the present application provides a system for detecting vehicle body posture control performance, as shown in Figure 1 The system comprises:

[0049] An inertial force loading mechanism for simulating inertial forces acting on the vehicle under different working conditions and collecting corresponding inertial data; a slewing table mechanism for providing a test environment for the vehicle under different working conditions;

[0050] An industrial PC 1 for receiving the inertial data sent by the inertial force loading mechanism, evaluating the vehicle body posture control performance based on the inertial data, and outputting the performance evaluation result.

[0051] Corresponding inertial data under different working conditions are different. When the working condition is emergency braking condition, the inertial data includes vehicle pitch angle and acceleration. When the working condition is high-speed cornering condition, the inertial data includes vehicle inclination angle and acceleration.

[0052] With reference to Figure 1 , the inertial force loading mechanism comprises:

[0053] The base 101 is fixed on the ground, and a linear guide rail 102 is arranged on the base 101;

[0054] The slider 103 is located on the linear guide rail 102;

[0055] The translation table 104 is located on the slider 103;

[0056] The linear actuator 105 is connected to one end of the base 101, and the other end of the linear actuator 105 is connected to the translation table 104 through a joint bearing.

[0057] A displacement sensor is also installed on the linear actuator 105 for monitoring the movement distance of the linear actuator 105.

[0058] The one-way acceleration sensor 106 is installed at one end of the translation table 104, which is used to collect the acceleration of the vehicle during the test.

[0059] With reference to Figure 1 , the rotary table mechanism comprises:

[0060] The angle sensor 201 is installed in the middle of the translation table 104;

[0061] The rotary table bearing 202 is installed at both ends of the translation table 104;

[0062] The rotary table 203 is fixed above the translation table 201 through the rotary table bearing 202, and the rotary table is used to place the vehicle to be tested.

[0063] The motor 204 is installed on the translation table 104 and located on one side of the rotary table bearing 202;

[0064] The gear 205 is installed on the output shaft of the motor 204;

[0065] The gear ring is installed on one side of the rotary table 203, and the gear ring is engaged with the gear 205.

[0066] Because the direction of the vehicle is different under different working conditions. Referring to Figure 2 , in the emergency braking working condition, the vehicle is parallel to the base 101 (the head direction is towards the linear actuator 105); and in the high-speed turning condition, the head direction needs to be adjusted so that the head direction has a certain angle with the base 101 to simulate the turning working condition, and the turning angle is about to the greater the angle of the included angle.

[0067] Therefore, the motor 204 is needed to drive the rotary table 203 to rotate, so as to drive the vehicle to be tested of the rotary table 203 to rotate.

[0068] Further, referring to Figure 2 or Figure 3The new system further comprises a bidirectional tilt sensor 301 installed in a vehicle 302 to be tested, and the vehicle to be tested is placed on a turntable 203 of a turntable mechanism.

[0069] When it is necessary to detect the body posture control performance of the vehicle to be tested, the industrial computer 1 is specifically configured to:

[0070] When the working condition is the emergency braking working condition, the linear actuator 105 is controlled to be loaded at a preset frequency, so that the linear actuator is loaded according to a sinusoidal motion, thereby driving the vehicle to perform a corresponding action, and pitch angle data collected by the bidirectional tilt sensor and acceleration data collected by the unidirectional acceleration sensor are obtained.

[0071] The first data curve is plotted with the acceleration data as the X-axis and the pitch angle data as the Y-axis, and a slope value of the first data curve is determined.

[0072] A target pitch angle corresponding to a target acceleration is obtained from the first data curve.

[0073] If it is determined that the slope value of the first curve is less than a first slope threshold value and the target pitch angle is less than a pitch angle threshold value, it is determined that the body posture control performance evaluation result is qualified.

[0074] When the working condition is the turning working condition, the vehicle is controlled to turn a preset angle on the basis of the emergency braking working condition, the linear actuator 105 is controlled to be loaded at a preset frequency, and the inclination angle data collected by the bidirectional tilt sensor and the acceleration data of the unidirectional acceleration sensor are obtained.

[0075] The second data curve is plotted with the acceleration data as the X-axis and the inclination angle data as the Y-axis, and a slope value of the second data curve is determined.

[0076] A target inclination angle corresponding to a target acceleration is obtained from the second data curve.

[0077] If it is determined that the slope value of the second curve is less than a second slope threshold value and the target inclination angle is less than an inclination angle threshold value, it is determined that the body posture control performance evaluation result is qualified.

[0078] The target acceleration can be 4-7 m / s 2 , and is preferably m / s 2 .

[0079] It can be seen that the body posture control performance detection system of the embodiment can simulate the inertial force to which the vehicle is subjected under different working conditions, and can collect the change characteristics of the body inertia data in real time, thereby providing bench test data for the development of new products such as the active roll bar system and the body posture control system, objectively evaluating the control effect of the automobile suspension on the body posture, ensuring the driving safety of the vehicle, and improving the comfort of the vehicle.

[0080] Through one or more embodiments of the present application, the present application has the following beneficial effects or advantages:

[0081] The present application provides a vehicle body posture control performance detection system, the system comprises: an inertial force loading mechanism for simulating the inertial force received by the vehicle under different working conditions and collecting corresponding inertial data; a turntable mechanism for providing a test environment for the vehicle under different working conditions; an industrial computer for receiving the inertial data sent by the inertial force loading mechanism, evaluating the vehicle body posture control performance based on the inertial data, and outputting the performance evaluation result; in this way, the vehicle body posture control performance detection system can simulate the inertial force received by the vehicle under different working conditions, and collect the change characteristics of the vehicle body inertial data in real time, providing bench test data for the development of new products such as active roll bar systems and vehicle body posture control systems, objectively evaluating the control effect of the automobile suspension on the vehicle body posture, ensuring the driving safety of the vehicle, and improving the comfort of the vehicle.

[0082] The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems can be used with programs in accordance with the teachings herein, or it can prove convenient to construct more specialized apparatus to perform the required method steps. The required structure for a variety of these systems will be apparent from the description above. In addition, the present application is not intended to be limited to any particular programming language. It will be appreciated that there are many programming languages that can be used to implement the teachings herein, and any such programming language can be used in connection with the various aspects of the present application. The descriptions above are intended to cover any and all methods of implementing the present application, where the language "for" takes its plain and ordinary meaning.

[0083] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been described in detail in order to not obscure the understanding of this description.

[0084] Similarly, it is to be understood that the embodiments of the present application can be used in the exact form disclosed herein, or with minor modifications, and the present application is not limited to the exact form disclosed herein. It is also to be understood that the following claims are intended to cover all such modifications that are within the true spirit and scope of the present application. Accordingly, it is not intended that the present application be limited, except as by the appended claims.

[0085] Those skilled in the art will appreciate that the modules in the apparatuses in the embodiments can be adapted and placed in one or more apparatuses other than the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and further can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, all combinations of all features disclosed in this specification (including accompanying claims, abstract and drawings) and all processes or units of any methods or apparatuses so disclosed are enabled regardless of whether the same, equivalent or similar features are used. Each feature disclosed in this specification (including the accompanying claims, abstract and drawings) can be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

[0086] Further, those skilled in the art will appreciate that a combination of features of different embodiments means that such combination is within the scope of the application and forms a different embodiment. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0087] The various component embodiments of the application can be implemented in hardware, or as software modules running in one or more processors, or in combinations thereof. Those skilled in the art will appreciate that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components in the gateway, the proxy server, the system according to the embodiments of the application. The application can also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for performing part or all of the methods described herein. Such program implementing the application can be stored on a computer readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or in any other form.

[0088] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of both hardware and software, and any combination thereof. In a unitary claim, several devices or sub-claims can be joined by means of the word 'or'. The word 'first','second', 'third', etc. do not imply any order. The terms 'comprise', 'comprising', 'include', 'including', and 'includes' are used herein to indicate the presence of stated features, integers, steps, or components but not to the exclusion of others.

[0089] Although preferred embodiments of the application have been described herein, additional alternatives, modifications, and variations can be apparent to those skilled in the art once given the benefit of the foregoing description. Accordingly, the application includes all such alternatives, modifications, and variations as come within the scope of the appended claims.

[0090] The above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the application should, therefore, be determined not with reference to the above description, but instead with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A system for detecting vehicle body attitude control performance, characterized by comprising: a vehicle body attitude control system; a vehicle body attitude control performance detection device; and a vehicle body attitude control performance detection program. The system comprises: An inertial force loading mechanism for simulating inertial forces on the vehicle in different working conditions and collecting corresponding inertial data; A rotary table mechanism for providing a test environment for the vehicle in different working conditions; An industrial computer for receiving the inertial data sent by the inertial force loading mechanism, evaluating the vehicle body posture control performance based on the inertial data, and outputting the performance evaluation result; The inertial force loading mechanism comprises: A base fixed to the ground, wherein a linear guide rail is arranged on the base; A sliding block located on the linear guide rail; A translation table located on the sliding block; A linear actuator, one end of which is connected to the base, and the other end of which is connected to the translation table; The inertial force loading mechanism further comprises: A one-way acceleration sensor installed on the translation table; The system further comprises a two-way inclination sensor installed in the vehicle to be tested, and the vehicle to be tested is placed on the rotary table of the rotary table mechanism; The rotary table mechanism comprises: An angle sensor installed in the middle of the translation table; A rotary table bearing installed at both ends of the translation table; A rotary table fixed above the translation table through the rotary table bearing; The industrial computer is specifically used for: When the working condition is an emergency braking condition, controlling the linear actuator to load at a preset frequency, and obtaining the pitch angle data collected by the two-way inclination sensor and the acceleration data of the one-way acceleration sensor; Drawing a first data curve with the acceleration data as the X-axis and the pitch angle data as the Y-axis, and determining the slope value of the first data curve; Obtaining the target pitch angle corresponding to the target acceleration from the first data curve; If it is determined that the slope value of the first data curve is less than a first slope threshold and the target pitch angle is less than a pitch angle threshold, then the vehicle body posture control performance evaluation result is determined to be qualified; When the working condition is a turning condition, controlling the vehicle to turn 90 degrees on the basis of the emergency braking condition, controlling the linear actuator to load at a preset frequency, and obtaining the inclination angle data collected by the two-way inclination sensor and the acceleration data of the one-way acceleration sensor; Drawing a second data curve with the acceleration data as the X-axis and the inclination angle data as the Y-axis, and determining the slope value of the second data curve; Obtaining the target inclination angle corresponding to the target acceleration from the second data curve; If it is determined that the slope value of the second data curve is less than a second slope threshold and the target inclination angle is less than an inclination angle threshold, then the vehicle body posture control performance evaluation result is determined to be qualified.

2. The system of claim 1, wherein, The inertial force loading mechanism further comprises: A displacement sensor installed on the linear actuator.

3. The system of claim 1, wherein, The rotary table mechanism further comprises: A motor installed on the translation table and located on one side of the rotary table bearing; A gear installed on the motor output shaft; A gear ring installed on one side of the rotary table, wherein the gear ring is engaged with the gear.

4. The system of claim 1, wherein, The target acceleration is 4-7 m / s 2 .

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