Steering wheel testing method, device, equipment, storage medium and product

Abstract

The application discloses a steering wheel test method, device, equipment, storage medium and product, and relates to the technical field of vehicle testing. In the process that the vehicle to be tested (namely, a target vehicle) runs at a target yaw rate, test data in a target period is acquired through a data interface of the vehicle, so that the subsequent steering wheel test is directly performed by using the data measured in the vehicle body, and the test accuracy is ensured. In addition, the change relationship between the steering angle of the steering wheel and the time is determined based on the test data, so that the return time corresponding to the steering angle of the steering wheel corresponding to the target yaw rate is accurately calculated, the steering wheel of the vehicle is conveniently tested, and compared with the test scheme of the related art, the additional cost is saved, and the test accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle testing, in particular to a steering wheel testing method, device, equipment, storage medium and product. BACKGROUND

[0002] In the related art, with the continuous updating of vehicle suspension systems and the continuous reform of steering assist methods, the steering rotation time of new vehicle models needs to be measured to ensure the safety of vehicle control.

[0003] Currently, when testing the rotation time of a vehicle, related sensors such as a yaw rate sensor, a steering wheel angle sensor, and a signal converter need to be installed on the vehicle. These additional sensors increase the cost of testing and make the operation more complex.

[0004] Therefore, how to more accurately and conveniently test the steering wheel rotation time of a vehicle is a problem to be solved. SUMMARY

[0005] The main purpose of the present application is to provide a steering wheel testing method, device, equipment, storage medium and product, which aims to solve the technical problem of how to more accurately and conveniently test the steering wheel rotation time of a vehicle.

[0006] To achieve the above-mentioned purpose, the present application provides a steering wheel testing method, which comprises:

[0007] During a target period in which the target vehicle runs at a target yaw rate, continuously acquiring test data through a data interface of the target vehicle, the test data comprising steering wheel steering angles corresponding to different time points in the target period;

[0008] Based on the test data, determining the change relationship between the steering wheel steering angle and the time of the target vehicle at the target yaw rate;

[0009] Based on the change relationship, determining the steering wheel return time of the target vehicle.

[0010] In some embodiments, the continuously acquiring test data through the data interface of the target vehicle comprises:

[0011] Continuously acquiring test data transmitted in real time on the target vehicle bus through the data interface of the target vehicle.

[0012] In some embodiments, the determining the change relationship between the steering wheel steering angle and the time of the target vehicle at the target yaw rate based on the test data comprises:

[0013] fitting, based on the test data, a change curve between the steering wheel steering angle and time of the target vehicle at the target yaw rate;

[0014] determining, based on the change curve, the change relationship between the steering wheel steering angle and time.

[0015] In some embodiments, before the test data is continuously acquired through the data interface of the target vehicle during the target period in which the target vehicle runs at a target yaw rate, the method further comprises:

[0016] acquiring the yaw rate of the vehicle at different steering wheel steering angles during the process in which the target vehicle runs at a set speed and the steering wheel is turned;

[0017] determining the steering wheel steering angle corresponding to the target yaw rate as a target steering angle;

[0018] turning the steering wheel of the target vehicle to the target steering angle and keeping the target vehicle running at the set speed.

[0019] In some embodiments, the change relationship is a linear change relationship, and the determining, based on the change relationship, of the steering wheel return time of the target vehicle comprises:

[0020] taking the target steering angle as a known parameter of the linear change relationship, calculating an unknown parameter through the linear change relationship, and obtaining the steering wheel return time of the target vehicle.

[0021] In some embodiments, after the fitting, based on the test data, of the change curve between the steering wheel steering angle and time of the target vehicle at the target yaw rate, the method further comprises:

[0022] calculating a fitting degree of the change curve;

[0023] in a case where the fitting degree is less than a set threshold, issuing a prompt information representing that an error occurs in data fitting;

[0024] in a case where the fitting degree is greater than or equal to the set threshold, performing the determining, based on the change curve, of the change relationship between the steering wheel steering angle and time.

[0025] In addition, to achieve the above-mentioned purpose, the application further provides a steering wheel testing device, which comprises:

[0026] a data acquisition module, configured to continuously acquire test data through a data interface of a target vehicle during a process in which the target vehicle runs at a target yaw rate, the test data comprising steering wheel steering angles corresponding to different time instants in a target period;

[0027] determine a change relation between the steering wheel steering angle and time of the target vehicle at the target yaw rate based on the test data;

[0028] determine the steering wheel return time of the target vehicle based on the change relation.

[0029] In addition, to achieve the above object, the present application further provides a steering wheel testing device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the steering wheel testing method as described above.

[0030] In addition, to achieve the above object, the present application further provides a storage medium, which is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the steering wheel testing method as described above.

[0031] In addition, to achieve the above object, the present application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the steering wheel testing method as described above.

[0032] The one or more technical solutions provided by the present application have at least the following technical effects:

[0033] In the process that the vehicle to be tested (i.e. the target vehicle) runs at a target yaw rate at a constant speed, the test data in the target period is obtained through the data interface of the vehicle, so that the subsequent steering wheel testing is directly performed by using the data measured inside the vehicle body, thereby ensuring the testing accuracy. In addition, the change relation between the steering wheel steering angle and time is determined based on the test data, so as to accurately calculate the return time corresponding to the steering wheel steering angle corresponding to the target yaw rate, thereby facilitating the testing of the steering wheel of the vehicle. Compared with the testing scheme of the related art, the additional cost is saved, and the testing accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application together with the specification.

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0036] Figure 1A flowchart of a steering wheel testing method provided by an embodiment of the present application is shown.

[0037] Figure 2 A flowchart of a steering wheel testing method provided by another embodiment of the present application is shown.

[0038] Figure 3 A variation curve provided by an exemplary embodiment of the present application is shown.

[0039] Figure 4 A structural diagram of a steering wheel testing device provided by an embodiment of the present application is shown.

[0040] Figure 5 A structural diagram of a steering wheel testing device provided by an embodiment of the present application is shown.

[0041] The purposes, functional features and advantages of the present application will be further explained with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0043] In order to better understand the technical solutions of the present application, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0044] The main solution of the embodiments of the present application is: in a target period in which a target vehicle runs at a target yaw rate, continuously acquiring test data through a data interface of the target vehicle, the test data including steering wheel steering angles corresponding to different time points in the target period; based on the test data, determining a variation relationship between the steering wheel steering angle and the time of the target vehicle at the target yaw rate; and based on the variation relationship, determining a steering wheel return time of the target vehicle.

[0045] In the related art, the steering return time is an important indicator for measuring the ability of a vehicle to respond to a steering instruction of a driver. If the steering return time of the vehicle is too long, it may cause the driver to react slowly when he needs to quickly avoid obstacles or change lanes, which will increase the risk of traffic accidents. Therefore, before the vehicle is shipped, the steering return time of the vehicle generally needs to be measured first.

[0046] However, the measurement methods in related technologies require the additional installation of vehicle yaw rate sensors, steering wheel angle meters, and signal converters on the vehicle. Data is then recorded via a programmable logic controller (PLC) and acquired through a terminal, making the equipment complex and expensive. Furthermore, since the measurements are based on data collected from external sensors, their accuracy is difficult to guarantee.

[0047] In summary, how to more accurately and conveniently test the steering wheel turn time of a vehicle is an urgent problem to be solved.

[0048] Based on this, this application provides a solution that can accurately test the steering wheel turn time of a vehicle using data from inside the vehicle while reducing additional costs.

[0049] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or a steering wheel testing device capable of performing the above functions. The following description uses a steering wheel testing device as an example to illustrate this embodiment and the subsequent embodiments.

[0050] Reference Figure 1 , Figure 1 A schematic flowchart of a steering wheel testing method according to an embodiment of this application is shown. The steering wheel testing method can be applied to a steering wheel testing device and includes the following steps S110 to S130:

[0051] Step S110: During the target time period when the target vehicle is running at a constant speed with the target yaw rate, test data is continuously acquired through the target vehicle's data interface.

[0052] In some implementations, test data transmitted in real time on the target vehicle's bus can be continuously acquired through the target vehicle's data interface.

[0053] The test data includes the steering wheel angles at different times during the target time period.

[0054] Specifically, the target vehicle refers to the vehicle to be tested. The target vehicle can be controlled by staff and driven into an open test area, and perform relevant operating operations according to the staff's instructions.

[0055] Yaw rate refers to the angular velocity of a vehicle's yaw rate around its longitudinal axis. It is an important parameter for measuring oversteer or understeer. Vehicles typically have yaw rate sensors installed inside. These sensors collect real-time data on changes in the vehicle's yaw rate and transmit the data to the vehicle's bus, which then sends it to the relevant domain controller for vehicle control.

[0056] In this embodiment of the application, the target yaw rate can be 25 deg / s according to general standards.

[0057] In some implementations, constant speed operation refers to the target vehicle continuously operating at a fixed test speed. For example, the test speed could be 20 km / h, but this application does not limit the implementation.

[0058] The start time of the target time period is the moment when the steering wheel is released after the target vehicle has been running at a constant speed according to the target yaw rate and test speed for a set period of time. The end time of the target time period can be a set duration after the start time, for example, the set duration can be 1 second. It should be noted that in actual experiments, 1 second is the preferred option for the target time period, because after 1 second, the accuracy of the test results cannot be guaranteed due to changes in the force state of the wheels.

[0059] In some implementations, the target vehicle has a data interface. It is understood that the data interface refers to a diagnostic interface used to establish a connection with the steering wheel testing equipment (e.g., diagnostic equipment) described in this application. Through the diagnostic interface, data from within the target vehicle can be transmitted to the diagnostic equipment for analysis, and the diagnostic equipment can also transmit data to the target vehicle for upgrades.

[0060] In some implementations, the diagnostic interface may be a Diagnostic Link Connector (DLC), a standard interface for diagnostic communication in automobiles, typically located under the dashboard near the driver's seat, for external test equipment (i.e., the steering wheel test equipment / diagnostic equipment in this application) to communicate with the vehicle.

[0061] Understandably, data collected inside a vehicle is typically transmitted via the Controller Area Network (CAN) bus. Sensors send data to the CAN bus, and each domain controller acquires the corresponding data and performs related operations through the CAN bus. In this application, the relevant sensors inside the vehicle can collect test data during the constant-speed operation of the target vehicle. These sensors may include, but are not limited to, steering wheel angle sensors, yaw rate sensors, and speed sensors.

[0062] Test data refers to the driving data of the target vehicle during the test process, which may include the steering wheel angles at different times within the target time period. In this embodiment, the data acquisition interval can be set by the operator according to the measurement accuracy. For example, the acquisition interval can be set to 0.25 seconds, meaning that the target vehicle can acquire test data once every 0.25 seconds, and whenever test data is acquired, the test data and the corresponding timestamp are sent to the CAN bus.

[0063] In summary, as an example, staff can activate functions such as cruise control on the target vehicle and set the speed to a fixed 20 km / h. At the same time, staff can turn the steering wheel at a speed of 45 deg / s in one direction (clockwise or counterclockwise) and continuously acquire and record the vehicle yaw rate values ​​corresponding to different angles during the steering wheel rotation via the vehicle's CAN bus.

[0064] When the vehicle's yaw rate reaches 25 degrees / s, the corresponding steering wheel angle value is recorded. In some implementations, to obtain a more accurate value, the above operation can be performed multiple times (e.g., three times), and the average of the steering wheel angles obtained multiple times can be taken as the steering wheel angle value corresponding to the vehicle's yaw rate reaching 25 degrees / s.

[0065] Step S120: Based on the test data, determine the relationship between the steering wheel angle and time for the target vehicle under the target yaw rate.

[0066] Understandably, to ensure vehicle safety, a vehicle's steering wheel is typically designed to automatically return to center after being left unattended, minimizing changes in the vehicle's direction of movement. Since the steering wheel's return to center is a continuous process after it is no longer under user control, this embodiment focuses on the relationship between the steering angle and time to better detect the steering wheel's return time.

[0067] In some implementations, a curve showing the change of steering wheel angle over time for a target vehicle at a target yaw rate can be fitted based on test data; and the relationship between the steering wheel angle and time can be determined based on the curve.

[0068] In some implementations, while the target vehicle is running at a set speed and the steering wheel is turned, the yaw rate of the vehicle at different steering wheel angles is obtained; the steering wheel angle corresponding to the target yaw rate is determined as the target steering angle; the steering wheel of the target vehicle is turned to the target steering angle, and the vehicle is kept running at the set speed.

[0069] In practice, the operator can control the target vehicle to travel at a speed of 20 km / h using cruise control, while simultaneously turning the steering wheel to the steering wheel angle value corresponding to the target yaw rate (the steering wheel angle value corresponding to 25 degrees / s). After the target vehicle continues to operate at this steering wheel angle value for a preset period of time (e.g., 3 seconds), the steering wheel is released, and test data for the target time period (within 1 second) is continuously recorded.

[0070] As mentioned earlier, the test data can include the steering wheel angles at different times within the target time period. For example, if the test data for the target vehicle is collected every 0.01 seconds, the test data obtained during the target time period (the above collection operation was performed in both clockwise and counterclockwise directions) can be recorded in the form of the table below.

[0071]

[0072] Based on the test data obtained above, the curves of the change between steering angle and time can be fitted for both clockwise and counterclockwise steering wheel movements.

[0073] By observing the test data, it is easy to find that there is a roughly linear relationship between the steering angle and time. Therefore, the test data can be analyzed using a linear model to obtain a linear equation with time as x and steering wheel angle as y, which is the curve of the change between steering angle and time.

[0074] For example, in some implementations, a curve fitted from data within 1 second can be plotted on the coordinate axes as follows: Figure 3 It is represented in the manner shown.

[0075] In some implementations, to ensure the accuracy of curve fitting, step S120 may also include steps S210 to S220.

[0076] Step S210: Calculate the goodness of fit of the change curve.

[0077] In step S220, if the fit is less than a set threshold, a prompt message indicating an error in the fitting of the characterization data is issued; if the fit is greater than or equal to the set threshold, step S130 is executed.

[0078] Specifically, after obtaining the variation curve using a linear model, the goodness of fit (R²) of the linear model can be calculated. R² can be calculated using the following expression:

[0079]

[0080] SSR refers to the sum of squared residuals, which can be calculated using the following expression:

[0081]

[0082] in, This refers to the predicted value at time i. This refers to the actual value at time i.

[0083] SST refers to the total sum of squares, which can be calculated using the following expression:

[0084]

[0085] in, It refers to the average of the actual values.

[0086] After obtaining the goodness of fit, a pre-set threshold can be used to determine whether the linear model meets the required fitting accuracy. For example, the threshold can be 0.85. When R² is greater than or equal to 0.85, the linear model is determined to meet the required fitting accuracy, and step S130 can be executed. When R² is less than 0.85, it indicates that the linear model does not meet the required fitting accuracy. In this case, a prompt message indicating an error in the data fitting can be issued to prompt the user to check the test data. There may be various scenarios, such as errors in the test data itself or errors in the fitting process. This embodiment does not limit these scenarios.

[0087] Step S130: Based on the changing relationship, determine the steering wheel return time of the target vehicle.

[0088] In some implementations, the target steering angle can be used as a known parameter of a linear relationship, and the unknown parameter can be calculated through the linear relationship to obtain the steering wheel return time of the target vehicle.

[0089] Step S120 allows us to calculate the relationship between the steering wheel angle and time in clockwise and counterclockwise directions, expressed as y = ax + b. Here, the target steering angle is a known value obtained in step S110, i.e., the known parameter y. Substituting this into the above formula yields the unknown parameter x, which represents the return time required for the steering wheel to return to its initial position under the target yaw rate.

[0090] This embodiment provides a steering wheel testing method. While the vehicle under test (i.e., the target vehicle) is running at a constant speed with a target yaw rate, test data for the target time period is acquired through the vehicle's data interface. Subsequent steering wheel tests are then performed directly using data measured inside the vehicle body, ensuring test accuracy. Furthermore, the relationship between steering wheel angle and time is determined based on the test data, thereby accurately calculating the return time corresponding to the steering wheel angle at the target yaw rate. This facilitates steering wheel testing and, compared to related technologies, saves additional costs and improves test accuracy.

[0091] This application also provides a steering wheel testing device, please refer to... Figure 4 The steering wheel testing device 100 includes:

[0092] The data acquisition module 110 is used to continuously acquire test data through the data interface of the target vehicle while the target vehicle is running at a constant speed with a target yaw rate. The test data includes the steering wheel angles corresponding to different times during the target time period.

[0093] The relationship determination module 120 is used to determine the relationship between the steering wheel angle and time for the target vehicle under the target yaw rate based on test data.

[0094] The time calculation module 130 is used to determine the steering wheel return time of the target vehicle based on the changing relationship.

[0095] The steering wheel testing device 100 provided in this application, employing the steering wheel testing method described in the above embodiments, can solve the technical problem of how to more accurately and conveniently test the steering wheel turn time of a vehicle. Compared with the prior art, the beneficial effects of the steering wheel testing device 100 provided in this application are the same as those of the steering wheel testing method provided in the above embodiments, and other technical features of the steering wheel testing device 100 are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0096] This application provides a steering wheel testing device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the steering wheel testing method in Embodiment 1 above.

[0097] The following is for reference. Figure 5The diagram illustrates a structural schematic of a steering wheel testing device suitable for implementing embodiments of this application. The steering wheel testing device in this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The steering wheel testing device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0098] like Figure 5 As shown, the steering wheel testing device 200 may include a processing unit 210 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 220 or a program loaded from storage device 230 into random access memory (RAM) 240. The RAM 240 also stores various programs and data required for the operation of the steering wheel testing device. The processing unit 210, ROM 220, and RAM 240 are interconnected via a bus 250. An input / output (I / O) interface 260 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 260: input devices 270 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 280 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 230 including, for example, magnetic tapes, hard disks, etc.; and communication devices 290. Communication device 290 allows the steering wheel testing equipment to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows a steering wheel testing equipment with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0099] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 230, or installed from ROM 220. When the computer program is executed by processing device 210, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0100] The steering wheel testing device provided in this application, employing the steering wheel testing method described in the above embodiments, can solve the technical problem of how to more accurately and conveniently test the steering wheel turn time of a vehicle. Compared with the prior art, the beneficial effects of the steering wheel testing device provided in this application are the same as those of the steering wheel testing method provided in the above embodiments, and other technical features of this steering wheel testing device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0101] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0103] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the steering wheel testing method described in the above embodiments.

[0104] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0105] The aforementioned computer-readable storage medium may be included in the steering wheel testing equipment; or it may exist independently and not be assembled into the steering wheel testing equipment.

[0106] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the steering wheel testing device, enable the steering wheel testing device to write computer program code for performing the operations of this application in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0108] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0109] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described steering wheel testing method, thereby solving the technical problem of how to more accurately and conveniently test the steering wheel return time of a vehicle. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the steering wheel testing method provided in the above embodiments, and will not be repeated here.

[0110] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the steering wheel testing method described above.

[0111] The computer program product provided in this application solves the technical problem of how to more accurately and conveniently test the steering wheel return time of a vehicle. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the steering wheel testing method provided in the above embodiments, and will not be repeated here.

[0112] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A steering wheel testing method characterized by, The steering wheel test method comprises: In a target period in which the target vehicle runs at a target yaw rate, test data is continuously acquired through a data interface of the target vehicle, the test data comprising steering wheel steering angles corresponding to different time points in the target period respectively; Based on the test data, a change relationship between the steering wheel steering angle and time of the target vehicle at the target yaw rate is determined; Based on the change relationship, a steering wheel return time of the target vehicle is determined.

2. The steering wheel testing method of claim 1, wherein, The continuously acquiring test data through the data interface of the target vehicle comprises: The test data transmitted in real time on a bus of the target vehicle is continuously acquired through the data interface of the target vehicle.

3. The steering wheel testing method of claim 1, wherein, The determining, based on the test data, the change relationship between the steering wheel steering angle and time of the target vehicle at the target yaw rate comprises: Based on the test data, a change curve between the steering wheel steering angle and time of the target vehicle at the target yaw rate is fitted; Based on the change curve, the change relationship between the steering wheel steering angle and time is determined.

4. The steering wheel testing method of claim 3, wherein, Before the continuously acquiring test data through the data interface of the target vehicle in the target period in which the target vehicle runs at the target yaw rate, the method further comprises: In a process in which the target vehicle runs at a set speed and the steering wheel is turned, the yaw rate of the vehicle under different steering wheel steering angles is acquired; A steering wheel steering angle corresponding to the target yaw rate is determined as a target steering angle; The steering wheel of the target vehicle is turned to the target steering angle, and the target vehicle runs at the set speed.

5. The steering wheel testing method of claim 4, wherein, The change relationship is a linear change relationship, and the determining, based on the change relationship, the steering wheel return time of the target vehicle comprises: The target steering angle is taken as a known parameter of the linear change relationship, an unknown parameter is calculated through the linear change relationship, and the steering wheel return time of the target vehicle is obtained.

6. The steering wheel testing method of claim 3, wherein, After the fitting, based on the test data, of the change curve between the steering wheel steering angle and time of the target vehicle at the target yaw rate, the method further comprises: The fitting degree of the change curve is calculated; In a case where the fitting degree is less than a set threshold, prompt information representing that data fitting has an error is sent out; In a case where the fitting degree is greater than or equal to the set threshold, the determining, based on the change curve, of the change relationship between the steering wheel steering angle and time is performed.

7. A steering wheel testing device characterized by comprising: The steering wheel test device comprises: A data acquisition module, configured to continuously acquire test data through a data interface of a target vehicle in a process in which the target vehicle runs at a target yaw rate, the test data comprising steering wheel steering angles corresponding to different time points in a target period respectively; A relationship determination module, configured to determine, based on the test data, a change relationship between the steering wheel steering angle and time of the target vehicle at the target yaw rate; A time calculation module, configured to determine, based on the change relationship, a steering wheel return time of the target vehicle.

8. A steering wheel testing apparatus characterized by comprising: The steering wheel testing device comprises a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the steering wheel testing method according to any one of claims 1 to 6.

9. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the steering wheel testing method according to any one of claims 1 to 6.

10. A computer program product, characterised in that, The computer program product comprises a computer program, and the computer program is executed by a processor to implement the steps of the steering wheel testing method according to any one of claims 1 to 6.

Images