Virtual detection method and system for steering column with intermediate shaft assembly

Abstract

The invention provides a virtual detection method and system for a steering column with an intermediate shaft assembly, and relates to the technical field of automobile design, and the method comprises the steps: building a parameterized model of the steering column with the intermediate shaft assembly; sequentially carrying out intermediate shaft torque fluctuation detection, intermediate shaft envelope detection and model motion envelope detection on the built steering column with intermediate shaft assembly parameterized model; wherein the construction of the parameterized model of the steering column with the intermediate shaft assembly comprises the following steps: determining the initial position of each hard point in the steering column with the intermediate shaft assembly, and obtaining the coordinate of each hard point; generating a hard point design table based on parameterized design, building a simplified boundary model of the steering column with the intermediate shaft assembly, and associating the simplified boundary model with the hard point design table; and establishing a moving part operation command, and a movement track and an envelope type of each movement, and completing the establishment of the parameterized model of the steering column with the intermediate shaft assembly. The development and design efficiency of the steering column with the intermediate shaft assembly can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle design, and in particular to a virtual detection method and system for a steering column with an intermediate shaft assembly. Background Art

[0002] The steering column with intermediate shaft assembly is a common structural form of the steering transmission system of current vehicles. During the design process of the steering column with intermediate shaft assembly, it is necessary to check whether its design position and motion trajectory meet the ergonomics and spatial layout. Since the intermediate shaft often adopts a double cross-axis universal joint structure design, this structural universal joint has the inherent characteristic of unequal speed transmission when affected by the spatial angle, resulting in a large torque fluctuation, affecting the steering feel and steering force gradient. Therefore, the main engine manufacturer usually sets the maximum torque fluctuation range. Therefore, during the design process of the steering column with intermediate shaft assembly, it is necessary to take into account ergonomics, spatial layout and intermediate shaft torque fluctuation value at the same time.

[0003] The commonly used design method for steering column with intermediate shaft assembly is to first adjust the hard points and length adjustment range of the steering system according to the requirements of ergonomics and spatial layout; then build a data model based on these parameters; then measure the spatial angle values ​​between the various parts of the intermediate shaft under the design state, and then substitute the angle values ​​into the formula to calculate the torque fluctuation value. If it is unqualified, adjust it again until it meets the requirements; then build a digital sample model on this data model to generate the trajectory and envelope of the moving parts; finally, measure the spatial layout gap value and other measurement items under the vehicle data to see if they meet the requirements. However, the design process is very cumbersome. When any parameter changes or any related peripheral parts change, the above steps need to be repeated and redesigned, which is inefficient and difficult to meet the design requirements of rapid iteration of new models. Summary of the invention

[0004] The embodiment of the present disclosure provides a virtual detection method and system for a steering column with an intermediate shaft assembly to improve the development and design efficiency of the steering column with an intermediate shaft assembly. The technical solution is as follows:

[0005] In a first aspect, a virtual detection method for a steering column with an intermediate shaft assembly is provided, comprising:

[0006] Build a parametric model of the steering column with intermediate shaft assembly;

[0007] For the built parametric model of the steering column with intermediate shaft assembly, the intermediate shaft torque fluctuation test, intermediate shaft and parts envelope test, and model motion envelope test are carried out in sequence;

[0008] Among them, the parametric model of the steering column with intermediate shaft assembly is built, including:

[0009] Determine the initial position of each hard point in the steering column with intermediate shaft assembly, and obtain the coordinates of each hard point;

[0010] Generate a hard point design table based on parametric design, build a simplified boundary model of the steering column with intermediate shaft assembly, and associate the simplified boundary model with the hard point design table;

[0011] Establish the moving parts operation commands, as well as the motion trajectory and envelope type of each motion, and complete the construction of the parametric model of the steering column with intermediate shaft assembly.

[0012] In a second aspect, a virtual detection system for a steering column with an intermediate shaft assembly is provided, comprising:

[0013] A parametric model building module, configured to build a parametric model of a steering column with an intermediate shaft assembly;

[0014] The detection module is configured to perform intermediate shaft torque fluctuation detection, intermediate shaft and parts envelope detection, and model motion envelope detection on the constructed parametric model of the steering column with intermediate shaft assembly;

[0015] Among them, the parametric model building module includes:

[0016] A hard point coordinate acquisition module is configured to determine the initial position of each hard point in the steering column with intermediate shaft assembly and acquire the coordinates of each hard point;

[0017] an association module configured to generate a hard point design table based on the parametric design, build a simplified boundary model of the steering column with the intermediate shaft assembly, and associate the simplified boundary model with the hard point design table;

[0018] The model building module is configured to establish the moving parts operation commands, as well as the motion trajectory and envelope type of each motion, to complete the construction of the parametric model of the steering column with intermediate shaft assembly.

[0019] In a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to complete the steps of the above-mentioned method for virtual detection of a steering column with an intermediate shaft assembly.

[0020] In a fourth aspect, a computer-readable storage medium is provided for storing computer instructions, which, when executed by a processor, complete the steps of the above-mentioned method for virtual detection of a steering column with an intermediate shaft assembly.

[0021] In a fifth aspect, a computer program product is provided, comprising a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned method for virtual detection of a steering column with an intermediate shaft assembly.

[0022] The technical solution provided by the disclosed embodiment has the following beneficial effects: In the disclosed embodiment, the steering column with intermediate shaft assembly model is parameterized, and the model is associated with the parameterized hard points. When a new vehicle model is iteratively designed and the hard points and parameters are changed, the model can be automatically updated synchronously without remodeling, thereby greatly improving the development and design efficiency of the steering column with intermediate shaft assembly. In addition, based on the constructed parametric model of the steering column with intermediate shaft assembly, the disclosed embodiment further proposes a virtual detection step, standardizes the forward development process, and further improves the development and design efficiency.

[0023] Advantages of additional aspects of the present disclosure will be given in part in the following description and in part will become apparent from the following description or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a flow chart of a virtual detection method for a steering column with an intermediate shaft assembly provided by an embodiment of the present disclosure;

[0026] Figure 2 is a specific flow chart of step 1 of a virtual detection method for a steering column with an intermediate shaft assembly provided by an embodiment of the present disclosure;

[0027] Figure 3 is a specific flow chart of step 2 of a virtual detection method for a steering column with an intermediate shaft assembly provided by an embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of generating a hard point design table in an embodiment of the present disclosure;

[0029] Figure 5 is a structural schematic diagram of a parameterized model of a steering column with an intermediate shaft assembly in an embodiment of the present disclosure;

[0030] Figure 6 is a schematic diagram of establishing a model kinematic pair in an embodiment of the present disclosure;

[0031] Figure 7 is a schematic diagram of establishing standardized trajectories and envelopes of various movements in the embodiments of the present disclosure;

[0032] Figure 8 is a schematic diagram of virtual detection of torque fluctuation in an embodiment of the present disclosure;

[0033] Fig. 9It is a structural block diagram of a virtual detection system for a steering column with an intermediate shaft assembly provided by an embodiment of the present disclosure;

[0034] Fig.10 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0036] Figure 1 The flowchart of a virtual detection method of a steering column with an intermediate shaft assembly provided by an embodiment of the present disclosure includes two parts: parameterized model building and virtual detection, specifically including:

[0037] Step 1: Build a parametric model of the steering column with intermediate shaft assembly;

[0038] Step 2: For the constructed parametric model of the steering column with intermediate shaft assembly, perform intermediate shaft torque fluctuation detection, intermediate shaft and parts envelope detection, and model motion envelope detection in sequence.

[0039] Among them, in step 1, if Figure 2 As shown, specifically including:

[0040] Step 101, determining the initial position of each hard point in the steering column with intermediate shaft assembly, and obtaining the coordinates of each hard point;

[0041] Step 102: Generate a hard point design table based on parametric design, build a simplified boundary model of the steering column with intermediate shaft assembly, and associate the simplified boundary model with the hard point design table;

[0042] Step 103: Establish moving part operation commands, as well as motion trajectories and envelope types of various motions, and complete the construction of a parametric model of the steering column with intermediate shaft assembly.

[0043] The disclosed embodiment builds a parametric model of the steering column with intermediate shaft assembly based on CATIA, and uses this to establish a standardized template. According to design requirements, it can cover all column-type steering types such as mechanical steering column, column-type electric power steering, manual adjustment steering column, electric adjustment steering column, and wire-controlled hand-feel simulation steering column, and covers all inspection items at the same time. The model is associated with parametric hard points. When the hard points and parameters of the new model are updated iteratively, the parametric model is automatically updated synchronously, without the need to repeatedly carry the digital prototype model, thereby shortening the R&D cycle, and standardizing the forward development process and virtual inspection steps to achieve standardized management of the R&D process.

[0044] The following is a detailed explanation using a mechanical manually adjustable steering column with an intermediate shaft as an example. At the same time, the differences in implementation details of other column-type steering types in different steps are explained in the specific steps.

[0045] In step 101, hard points are the general term for control points (or coordinates), control lines, control surfaces and control structures determined in the overall layout design process to ensure coordination and assembly between parts and styling requirements, and are usually pre-selected according to the overall vehicle outline size. The hard point coordinates of the steering column with intermediate shaft assembly in the CATIA model are extracted, and the hard points include the steering wheel rotation center point, the steering input shaft rotation center point, the upper column sliding center point, the lower column sliding center point, the upper mounting bracket left and right mounting points, the lower mounting bracket left and right mounting points, the manual adjustment handle left and right rotation points, the upper and lower cross shaft center points, and the steering gear input shaft meshing point.

[0046] In step 102, if Figure 4 As shown, the hard point parameters are associated through CATIA parametric design to generate a hard point design table, so that the subsequently constructed model can be associated with the hard point, and the model coordinate value association design table can be updated synchronously.

[0047] Based on the hard points of each component of the steering column with intermediate shaft assembly, combined with the actual installation reference surface and the maximum boundary of reference ergonomics, a simplified boundary model of each component constructed by lines and surfaces is constructed through CATIA parametric design, such as Figure 5 As shown, the parts include steering wheel, steering input shaft, upper column assembly, manual adjustment handle, upper mounting bracket, lower column assembly, steering output shaft, lower mounting bracket, intermediate shaft assembly (intermediate shaft upper yoke, intermediate shaft upper shaft tube, intermediate shaft lower shaft tube, intermediate shaft lower yoke), steering gear input shaft, in addition, the upper column assembly, manual adjustment handle, upper mounting bracket, lower column assembly, steering output shaft area is also the associated parts assembly area, in the subsequent design is also used for further assembly of associated motion parts. Simplify the boundary model associated hard points, realize the modification of hard point design table, and update the model synchronously.

[0048] In step 103, if Figure 6-Figure 7 As shown, first establish the moving parts operation command. According to the mechanical principle of the steering column with intermediate shaft assembly, set the steering left and right rotation limit movement command, steering axial adjustment limit and safety collision collapse command, steering angle adjustment command, manual adjustment handle opening and closing command, and then set the steering input shaft and steering output shaft rotation speed monitoring sensors respectively, and establish a law curve to define the constant rotation speed, and complete the establishment of the torque fluctuation detection command.

[0049] Secondly, the standardized motion trajectory and envelope type of each motion are established. The steering column with intermediate shaft assembly motion pair includes the rotational motion from the steering input shaft to the output shaft, the axial upper and lower limit position adjustment, the upper and lower limit position adjustment around the lower bracket angle, manual adjustment and the handle opening and closing motion. According to the coordination mode of each motion pair, the motion trajectory detection points in various situations are set for subsequent virtual detection.

[0050] After completing the construction of the parametric model of the steering column with intermediate shaft assembly in step 1, proceed to virtual testing in step 2. Figure 3 As shown, step 2 specifically includes:

[0051] Step 201, optimizing hard point coordinates based on ergonomic boundaries;

[0052] Step 202, performing a steering column with an intermediate shaft torque fluctuation detection, if the steering column with an intermediate shaft torque fluctuation meets the requirements, executing step 203, otherwise, optimizing the hard point coordinates and re-detecting;

[0053] Step 203, assembling the three-dimensional digital models of various components to generate the motion trajectory and envelope of the steering system;

[0054] Step 204, perform envelope detection of the intermediate shaft and parts. If the envelope detection of the intermediate shaft and parts meets the requirements, execute step 205; otherwise, optimize the structure of the parts and perform the detection again;

[0055] Step 205, assembling external associated motion components to generate a motion envelope of the overall model;

[0056] Step 206: perform model motion envelope detection. If the model motion envelope detection meets the requirements, output the design results. Otherwise, optimize the external associated motion components and re-test.

[0057] For a more comprehensive explanation, step 2 is described in detail below using a new design and development scenario as an example.

[0058] In step 201, the steering column is arranged in the passenger compartment. In the early stage of design, the ergonomic boundary is first determined, the hard point coordinates are optimized under the spatial boundary, the corresponding hard point coordinate values ​​in the hard point design table are modified, and the model is updated synchronously in the CATIA software. It is tested under the ergonomic view until it meets the ergonomic boundary requirements, and a version of the hard points that meet the requirements are locked to perform intermediate shaft torque fluctuation detection.

[0059] In step 202, the torque fluctuation of the steering column with the intermediate shaft is detected, and the trajectory settings of the angle adjustment middle position, the angle adjustment upper limit position, and the angle adjustment lower limit position are selected respectively, and then the input and output rotation speed difference values ​​are generated correspondingly using the law curve, and the torque fluctuation value of the steering column with the intermediate shaft is, such as Figure 8 As shown. The steering wheel on the actual vehicle needs to be able to adjust up and down and forward and backward. Based on the mechanical structure mechanism, when the steering wheel angle is adjusted, some parts rotate around the lower bracket, and the hard point of the intermediate shaft will be affected, resulting in changes in the torque fluctuation value. Therefore, it is necessary to detect the torque fluctuation of the steering column at different angle adjustment positions. Since the intermediate shaft is a double cross shaft structure, including two upper and lower cross shafts, when this structure is not in a straightened state, when the upper cross shaft rotates at a specific speed, the lower cross shaft is greater than or less than the specific speed of the upper cross shaft; for steering, from the perspective of the intermediate shaft alone, the torque transmitted to the steering wheel will fluctuate because of the inconsistent upper and lower rotation speeds. The input rotation speed is the rotation speed of the steering wheel, and the output rotation speed is the rotation speed of the steering gear input shaft. The output shaft rotation unequal speed fluctuation presents a sine wave curve. Since the starting position of the rotation is the middle position of the steering wheel, it can be intuitively seen that the speed is at a symmetrical position of the peak / valley at the start. If the wire control steering type is adopted, ignore this step.

[0060] It is determined whether the torque fluctuation of the steering column with the intermediate shaft meets the requirements. If so, the subsequent detection process is continued; if not, step 201 is repeated to optimize the hard point coordinates and re-detect.

[0061] In step 203, when the torque fluctuation test of the steering column with intermediate shaft is passed, according to the design of the steering column with intermediate shaft type, in the CATIA software, the specific three-dimensional digital model of each component included in the steering column with intermediate shaft type is assembled to the corresponding position of the simplified boundary model and fixedly connected with the model to form an associated movement, such as Figure 5 As shown in the figure, the parts include steering wheel, steering input shaft, upper column assembly, manual adjustment handle, upper mounting bracket, lower column assembly, steering output shaft, lower mounting bracket, intermediate shaft assembly (intermediate shaft upper yoke, intermediate shaft upper shaft tube, intermediate shaft lower shaft tube, intermediate shaft lower yoke), steering gear input shaft. If an electric adjustment column is used, the manual adjustment handle is ignored, and other structural differences are the same as Figure 4 The parts shown are installed as a whole and there is no omission.

[0062] Then, the motion trajectory and envelope of the steering system are generated, such as Figure 7 As shown in the figure, according to the standardized trajectory of each movement, the model motion envelope is generated for the synchronous engineering of related departments. If an electric adjustment column is used, the envelope is generated to hide the steering adjustment handle. If a wire-controlled steering type is used, the intermediate shaft assembly is hidden when the envelope is generated. Considering that there are a large number of parts in the vehicle, the development process requires the cooperation of multiple departments, so departmental synchronous engineering is required to synchronize the progress and design maturity of each department.

[0063] In step 204, the assembled model is tested to see if it meets the requirements of the internal and external layout space. If the steering column with intermediate shaft and parts envelope does not meet the requirements of the internal and external layout space, the structure of the parts is optimized, and then the test is performed again until the layout space requirements are met. The steering column with intermediate shaft and parts envelope includes the intermediate shaft envelope and the envelope of each part, including the layout test of the internal parts of the steering column with intermediate shaft and the surrounding parts.

[0064] In step 205, external associated moving parts are identified, and external associated moving parts such as electronic locks (if any), combination switch assemblies, upper and lower interior trim covers, etc. are assembled to the Figure 4 The associated parts assembly area shown in the figure is fixedly connected with the model to form associated motion. Then the overall motion trajectory and envelope of the entire steering system and external associated motion parts are generated, as shown in Figure 7 As shown, click on each standardized motion trajectory to generate the model motion envelope to facilitate space layout detection, safety collision collapse, and ergonomic section analysis.

[0065] In step 206, the model motion envelope detection is performed, and the external associated motion components are checked. If the detection fails, the structural dimensions of the external associated motion components are optimized and then re-tested. If the detection passes, it indicates that all tests meet the design requirements. This is used as the final design data. After the data is frozen, it is archived in the system to complete the design and virtual detection tasks of the steering column with intermediate shaft assembly.

[0066] Fig. 9 is a structural block diagram of a virtual detection system 300 for a steering column with an intermediate shaft assembly provided in an embodiment of the present disclosure, such as Fig. 9 As shown, the system includes: a parameterized model building module 301 and a detection module 302.

[0067] The parameterized model building module 301 is configured to build a parameterized model of a steering column with an intermediate shaft assembly;

[0068] The detection module 302 is configured to perform intermediate shaft torque fluctuation detection, intermediate shaft envelope detection, and model motion envelope detection on the constructed parameterized model of the steering column with intermediate shaft assembly.

[0069] The parameterized model building module 301 specifically includes: a hard point coordinate acquisition module, an association module, and a model building module;

[0070] The hard point coordinate acquisition module is configured to determine the initial position of each hard point in the steering column with intermediate shaft assembly and acquire the coordinates of each hard point;

[0071] an association module configured to generate a hard point design table based on the parametric design, build a simplified boundary model of the steering column with the intermediate shaft assembly, and associate the simplified boundary model with the hard point design table;

[0072] The model building module is configured to establish the moving parts operation commands, as well as the motion trajectory and envelope type of each motion, to complete the construction of the parametric model of the steering column with intermediate shaft assembly.

[0073] It should be noted that: the virtual detection system 300 for a steering column with an intermediate shaft assembly provided in the above embodiment only uses the division of the above functional modules as an example when performing virtual detection of a steering column with an intermediate shaft assembly. In actual applications, the above functional distribution can be completed by different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the virtual detection system 300 for a steering column with an intermediate shaft assembly provided in the above embodiment and the virtual detection method embodiment for a steering column with an intermediate shaft assembly belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0074] Fig.10 is a structural block diagram of an electronic device provided by an embodiment of the present disclosure. Fig.10 As shown, the electronic device 400 may be a vehicle-mounted computer, etc. The electronic device 300 includes: a processor 401 and a memory 402 .

[0075] Processor 401 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. Processor 401 may include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in a standby state. In some embodiments, processor 401 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content that needs to be displayed on the display screen. In some embodiments, processor 401 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0076] The memory 402 may include one or more computer-readable media, which may be non-transitory. The memory 402 may also include a high-speed random access memory and a non-volatile memory, such as one or more disk storage devices and flash memory storage devices. In some embodiments, the non-transitory computer-readable medium in the memory 402 is used to store at least one computer program, which is used to be executed by the processor 401 to implement a virtual detection method for a steering column with an intermediate shaft assembly provided in an embodiment of the present disclosure.

[0077] Those skilled in the art will understand that Fig.10 The structure shown in the figure does not constitute a limitation on the electronic device 400, and may include more or less components than those shown in the figure, or combine some components, or adopt a different component arrangement.

[0078] The embodiment of the present disclosure also provides a computer-readable storage medium for storing computer instructions. When the computer instructions are executed by a processor, the steps of a virtual detection method for a steering column with an intermediate shaft assembly provided in the embodiment of the present disclosure can be completed.

[0079] The embodiment of the present disclosure also provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of a virtual detection method for a steering column with an intermediate shaft assembly provided in the embodiment of the present disclosure.

[0080] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A virtual detection method for a steering column with an intermediate shaft assembly, characterized in that: include: Build a parametric model of the steering column with intermediate shaft assembly; For the built parametric model of the steering column with intermediate shaft assembly, the intermediate shaft torque fluctuation test, intermediate shaft and parts envelope test, and model motion envelope test are carried out in sequence; Among them, the parametric model of the steering column with intermediate shaft assembly is built, including: Determine the initial position of each hard point in the steering column with intermediate shaft assembly, and obtain the coordinates of each hard point; Generate a hard point design table based on parametric design, build a simplified boundary model of the steering column with intermediate shaft assembly, and associate the simplified boundary model with the hard point design table; Establish the moving parts operation commands, as well as the motion trajectory and envelope type of each motion, and complete the construction of the parametric model of the steering column with intermediate shaft assembly.

2. A virtual detection method for a steering column with an intermediate shaft assembly as claimed in claim 1, characterized in that: The simplified boundary model is a simplified boundary model of each component in the steering column with intermediate shaft assembly constructed by lines and surfaces.

3. A virtual detection method for a steering column with an intermediate shaft assembly as claimed in claim 1, characterized in that: The constructed parametric model of the steering column with intermediate shaft assembly sequentially performs intermediate shaft and parts torque fluctuation detection, intermediate shaft envelope detection, and model motion envelope detection, including: Optimize hard point coordinates based on ergonomic boundaries; Perform steering column with intermediate shaft torque fluctuation detection. If the steering column with intermediate shaft torque fluctuation meets the requirements, perform intermediate shaft and parts envelope detection. Otherwise, optimize the hard point coordinates and re-perform steering column with intermediate shaft torque fluctuation detection. Assemble the three-dimensional digital models of each component to generate the motion trajectory and envelope of the steering system; Perform envelope detection of intermediate shafts and parts. If the envelope detection of intermediate shafts and parts meets the requirements, perform model motion envelope detection. Otherwise, optimize the component structure and re-perform envelope detection of the intermediate shaft. Assemble external associated motion components to generate the motion envelope of the overall model; Perform model motion envelope detection. If the model motion envelope detection meets the requirements, output the design results. Otherwise, optimize the external associated motion components and re-perform the model motion envelope detection.

4. A virtual detection method for a steering column with an intermediate shaft assembly as claimed in claim 3, characterized in that: The steering column with intermediate shaft torque fluctuation detection includes respectively detecting the torque fluctuation of the steering column at the middle position of angle adjustment, the upper limit position of angle adjustment, and the lower limit position of angle adjustment.

5. A virtual detection method for a steering column with an intermediate shaft assembly as claimed in claim 3, characterized in that: The three-dimensional digital models of each component include the steering wheel, steering input shaft, upper column assembly, manual adjustment handle, upper mounting bracket, lower column assembly, steering output shaft, lower mounting bracket, intermediate shaft assembly, and steering gear input shaft.

6. A virtual detection method for a steering column with an intermediate shaft assembly as claimed in claim 3, characterized in that: The three-dimensional digital models of the components are assembled, including, according to the type of the steering column with intermediate shaft, assembling the three-dimensional digital models of the components corresponding to the type to the corresponding positions of the simplified boundary model and fixing them with the model to form associated motion.

7. A virtual detection system for a steering column with an intermediate shaft assembly, characterized in that: include: A parametric model building module, configured to build a parametric model of a steering column with an intermediate shaft assembly; The detection module is configured to perform intermediate shaft torque fluctuation detection, intermediate shaft envelope detection, and model motion envelope detection on the constructed parametric model of the steering column with intermediate shaft assembly in sequence; Among them, the parametric model building module includes: A hard point coordinate acquisition module is configured to determine the initial position of each hard point in the steering column with intermediate shaft assembly and acquire the coordinates of each hard point; an association module configured to generate a hard point design table based on the parametric design, build a simplified boundary model of the steering column with the intermediate shaft assembly, and associate the simplified boundary model with the hard point design table; The model building module is configured to establish the moving parts operation commands, as well as the motion trajectory and envelope type of each motion, to complete the construction of the parametric model of the steering column with intermediate shaft assembly.

8. An electronic device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to complete the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: Used to store computer instructions, which, when executed by a processor, complete the steps of the method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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