Method, device and equipment for determining suspension vibration isolation rate of commercial vehicle and medium

Abstract

The invention discloses a method, device and equipment for determining the suspension vibration isolation rate of a commercial vehicle and a medium. The method comprises the steps of determining power assembly suspension information corresponding to a target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle; engine testing is carried out on the target commercial vehicle based on the target test bench and the target engine rigid body model, and engine load data corresponding to the target commercial vehicle are determined; and performing vibration simulation on the power assembly suspension information and the engine load data based on the target whole vehicle simulation model to generate a vibration acceleration simulation result, and determining a target suspension vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result. According to the technical scheme, the power assembly suspension vibration isolation rate of the commercial vehicle can be quickly simulated, and the design optimization efficiency of the commercial vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle engineering, and particularly to a method, device, equipment and medium for determining the vibration isolation rate of a commercial vehicle mount. Background Art

[0002] With the rapid development of vehicle engineering technology, the vibration isolation of the powertrain mount plays a key role in the field of vehicle Noise Vibration Harshness (NVH) control, and is of great importance to improving the NVH performance of the whole vehicle.

[0003] In the prior art, the vibration isolation rate of the powertrain mount of an unproduced commercial vehicle is usually determined by means of on-vehicle tests or historical real data, so as to optimize the mount of the commercial vehicle. However, if the method of the prior art is used to determine the vibration isolation rate of the powertrain mount of a commercial vehicle, it is necessary to rely on the real data of other commercial vehicles and it is impossible to directly verify the unproduced commercial vehicle. This reduces the design optimization efficiency and accuracy of commercial vehicles. Therefore, how to quickly and accurately determine the vibration isolation rate of the powertrain mount of a commercial vehicle is an urgent problem to be solved at present. Summary of the Invention

[0004] The present invention provides a method, device, equipment and medium for determining the vibration isolation rate of a commercial vehicle mount, which can solve the problem of low generation efficiency and accuracy of the vibration isolation rate of the powertrain mount of a commercial vehicle.

[0005] According to one aspect of the present invention, there is provided a method for determining the vibration isolation rate of a commercial vehicle mount, including:

[0006] Determining the powertrain mount information corresponding to the target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle;

[0007] Performing an engine test on the target commercial vehicle based on a target test bench and a target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle;

[0008] Performing a vibration simulation on the powertrain mount information and the engine load data based on a target vehicle simulation model to generate a vibration acceleration simulation result, and determining a target vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

[0009] According to another aspect of the present invention, there is provided a device for determining the vibration isolation rate of a commercial vehicle mount, including:

[0010] A first determination module, configured to determine the powertrain mount information corresponding to the target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle;

[0011] A second determination module, configured to perform engine tests on the target commercial vehicle based on the target test bench and the target engine rigid body model, and determine the engine load data corresponding to the target commercial vehicle;

[0012] An isolation rate generation module, configured to perform vibration simulation on the powertrain mount information and the engine load data based on the target vehicle simulation model, generate a vibration acceleration simulation result, and determine the target mount isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

[0013] According to another aspect of the present invention, there is provided an electronic device, including:

[0014] At least one processor; and

[0015] A memory communicatively connected to the at least one processor; wherein,

[0016] The memory stores a computer program executable by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor is enabled to execute the method for determining the mount isolation rate of a commercial vehicle according to any embodiment of the present invention.

[0017] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the method for determining the mount isolation rate of a commercial vehicle according to any embodiment of the present invention when executed.

[0018] According to another aspect of the present invention, there is provided a computer program product including a computer program, which when executed by a processor implements the method for determining the mount isolation rate of a commercial vehicle according to any embodiment of the present invention.

[0019] The technical solution of the embodiment of the present invention determines the powertrain mount information corresponding to the target commercial vehicle through the target vehicle simulation model corresponding to the target commercial vehicle. Furthermore, engine tests are performed on the target commercial vehicle through the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle. Finally, vibration simulation is performed on the powertrain mount information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result, and the target mount isolation rate corresponding to the target commercial vehicle is determined based on the vibration acceleration simulation result. Since the isolation rate of the mount is determined using the simulation model, the problems of low generation efficiency and low accuracy of the powertrain mount isolation rate of commercial vehicles are solved, and rapid simulation of the powertrain mount isolation rate of commercial vehicles can be achieved, improving the design and optimization efficiency of commercial vehicles.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 is a flowchart of a method for determining the vibration isolation rate of a commercial vehicle mount according to Embodiment 1 of the present invention;

[0023] Figure 2 is a flowchart of a method for determining the vibration isolation rate of a commercial vehicle mount according to Embodiment 2 of the present invention;

[0024] Figure 3 is a schematic structural diagram of a device for determining the vibration isolation rate of a commercial vehicle mount according to Embodiment 3 of the present invention;

[0025] Figure 4 is a schematic structural diagram of an electronic device for implementing the method for determining the vibration isolation rate of a commercial vehicle mount in the embodiments of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first", "second", "target", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0028] Embodiment 1

[0029] Figure 1 The figure is a flowchart of a method for determining the vibration isolation rate of a commercial vehicle mount according to Embodiment 1 of the present invention. This embodiment is applicable to the situation of determining the vibration isolation rate of the powertrain mount for a commercial vehicle that has not been produced yet. This method can be executed by a device for determining the vibration isolation rate of a commercial vehicle mount. The device for determining the vibration isolation rate of a commercial vehicle mount can be implemented in the form of hardware and / or software, and the device for determining the vibration isolation rate of a commercial vehicle mount can be configured in an electronic device. As Figure 1 shown, the method includes:

[0030] S110. Determine the powertrain mount information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle.

[0031] Among them, a commercial vehicle can refer to an automobile used for transporting people and goods in terms of design and technical features. Exemplarily, commercial vehicles can be all trucks and buses with more than 9 seats, and are divided into five categories: buses, trucks, semi-trailer tractors, incomplete bus vehicles and incomplete truck vehicles. The target commercial vehicle can refer to a commercial vehicle for which the vibration isolation rate of the powertrain mount needs to be determined. Generally, the target commercial vehicle can be determined according to actual needs. The target vehicle simulation model can refer to a three-dimensional vehicle simulation model corresponding to the target commercial vehicle. Generally, the target vehicle simulation model can include various design parameters corresponding to the target commercial vehicle. The powertrain mount information can refer to the attribute information corresponding to the powertrain mount. Exemplarily, the powertrain mount information can include the stiffness of the front left, front right, rear left and rear right mounts of the powertrain in the X, Y and Z directions respectively and the spatial position of the powertrain.

[0032] In an alternative embodiment, before determining the powertrain mount information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle, it may further include: obtaining the basic three-dimensional model and basic attribute information corresponding to the target commercial vehicle; filling and processing the basic three-dimensional model based on the basic attribute information to obtain the target vehicle simulation model corresponding to the target commercial vehicle. Among them, the basic three-dimensional model may refer to the original three-dimensional (3D) model without attribute parameter assignment. Exemplarily, the basic three-dimensional model may include a body system, a frame system, a powertrain system, a transmission system, a suspension system, a braking system, etc. Generally, the basic three-dimensional models corresponding to the same type of commercial vehicle are the same. The basic attribute information may refer to the material attributes of each assembly or component in the basic three-dimensional model. Exemplarily, the basic attribute information may include the elastic modulus, Poisson's ratio, or density of the material, etc. Generally, each commercial vehicle corresponds to a set of basic attribute information.

[0033] Specifically, before the process of determining the vibration isolation rate of the commercial vehicle mount, a basic three-dimensional model database containing various commercial vehicle models can be constructed in advance according to actual application requirements. Furthermore, after determining the target commercial vehicle, the corresponding basic three-dimensional model can be matched and determined in the basic three-dimensional model database using the model of the target commercial vehicle. At the same time, the basic attribute information of the target commercial vehicle is obtained at the design terminal. Further, the basic attribute information is filled into the basic three-dimensional model, and the filled three-dimensional model is geometrically cleaned to delete redundant and small modeling defects, and unnecessary components in the model that are not related to the process of determining the vibration isolation rate of the mount are deleted. Finally, meshing is performed according to the requirements of the mesh model. Exemplarily, the requirements of the mesh model can be: for volume-type components, 3D tetrahedral or 3D hexahedral meshes are used and need to be converted to second order; the mesh element size can be defined according to the total size of the component and shall not be less than 10 mm; it is necessary to ensure that there are no deformed elements such as those with too small a volume or too sharp an angle. For the transmission housing, drive axle housing, meshing gears, etc., 3D hexahedral meshes are used; the mesh element size is defined according to the total size of the component. Considering the calculation efficiency, the size should be as large as possible, for example, the size shall not be less than 15 - 20 mm; it is necessary to ensure that there are no deformed elements such as those with too small a volume or too sharp an angle. 1D elements are used to establish the bearings, splines, mount rubbers, air springs, etc. inside the assemblies. Contact pairs are established in the connection areas between or inside the assemblies, or rigid elements / spring-damper elements are used for connection, and the bearing positions are constrained. Thus, the target vehicle simulation model corresponding to the target commercial vehicle is generated, providing an effective basis for subsequent operations.

[0034] S120. Conduct an engine test on the target commercial vehicle based on the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle.

[0035] Among them, the target test bench can refer to a bench pre-built for functional testing of the engine. Generally, the target test bench may include the engine to be tested and the bench for fixing the generator. The engine rigid body model can refer to a simplified model used for engineering simulation and dynamic analysis. Through the engine rigid body model, the complex structure of the engine can be abstracted into a system composed of multiple rigid components. Exemplarily, the engine rigid body model can be a parametric model established according to the physical parameters inside the engine such as the cylinder pitch, cylinder diameter, stroke, and connecting rod length of the engine. Generally, one engine corresponds to one engine rigid body model. The target engine rigid body model can refer to the engine rigid body model corresponding to the target commercial vehicle. The engine load data can refer to the force and moment loads acting on the engine body during engine combustion.

[0036] S130. Perform vibration simulation on the powertrain mount information and the engine load data based on the target vehicle simulation model, generate a vibration acceleration simulation result, and determine the target mount isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

[0037] Among them, the target vehicle simulation model can refer to a pre-selected model for simulating the vibration state of the whole vehicle. Through the target vehicle simulation model, the corresponding vibration data result can be determined using the powertrain mount information and the engine load data. The vibration acceleration simulation result can refer to the vibration acceleration data obtained by simulation. In an optional implementation manner, the vibration acceleration simulation result includes: the vibration acceleration value on the active side of the powertrain mount and the vibration acceleration value on the passive side of the powertrain mount. The vibration acceleration value on the active side of the powertrain mount can refer to the vibration acceleration at the connection between the powertrain and the mount. Generally, the vibration acceleration value on the active side of the powertrain mount can reflect the vibration intensity generated by the powertrain itself. The vibration acceleration value on the passive side of the powertrain mount can refer to the vibration acceleration at the connection between the mount and the frame or body. Through the vibration acceleration value on the passive side of the powertrain mount, the vibration intensity transmitted to the body after attenuation by the mount system can be reflected. The target mount isolation rate can refer to the powertrain mount isolation rate converted based on the vibration acceleration simulation result.

[0038] It should be noted that in the embodiments of the present invention, the vibration acceleration values on the active side of the powertrain mount and the vibration acceleration values on the passive side of the powertrain mount both include the vibration accelerations in the X, Y, and Z directions.

[0039] In an alternative embodiment, after determining the target suspension isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result, the following steps are further included: numerically comparing the target suspension isolation rate with a preset suspension isolation rate threshold to generate a numerical comparison result; and determining an optimization scheme corresponding to the target commercial vehicle based on a preset optimization rule and the numerical comparison result. Herein, the preset suspension isolation rate threshold may refer to a numerically value preset for evaluating the target suspension isolation rate. Exemplarily, the preset suspension isolation rate threshold may be 85% or 90%. The numerical comparison result may refer to the result obtained by numerically comparing the target suspension isolation rate with the preset suspension isolation rate threshold. Exemplarily, the numerical comparison result may be that it meets the preset suspension isolation rate threshold or does not meet the preset suspension isolation rate threshold. The preset optimization rule may refer to a pre-set vehicle optimization adjustment strategy. Generally, the preset optimization rule may include the adjustment correlation relationships between various components. The optimization scheme may refer to the specific optimization direction corresponding to the target commercial vehicle generated based on the preset optimization rule and the numerical comparison result. Specifically, after generating the target suspension isolation rate corresponding to the target commercial vehicle, the target suspension isolation rate can be numerically compared with the preset suspension isolation rate threshold to determine the suspension isolation level of the power train of the target commercial vehicle. If the numerical comparison result is that it meets the preset suspension isolation rate threshold, it indicates that the suspension isolation level of the power train of the target commercial vehicle is good and no optimization is required. On the contrary, if the numerical comparison result is that it does not meet the preset suspension isolation rate threshold, it indicates that the suspension isolation level of the power train of the target commercial vehicle is poor, and an optimization scheme corresponding to the target commercial vehicle needs to be determined based on the preset optimization rule and the deviation result from the preset suspension isolation rate threshold, providing an effective basis for subsequent suspension optimization.

[0040] The technical solution of the embodiment of the present invention determines the power train suspension information corresponding to the target commercial vehicle through the target vehicle simulation model corresponding to the target commercial vehicle. Furthermore, the target commercial vehicle is subjected to engine testing through the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle. Finally, vibration simulation is performed on the power train suspension information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result, and the target suspension isolation rate corresponding to the target commercial vehicle is determined based on the vibration acceleration simulation result. Since the simulation model is used to determine the suspension isolation rate, the problems of low generation efficiency and low accuracy of the power train suspension isolation rate of commercial vehicles are solved, and rapid simulation of the power train suspension isolation rate of commercial vehicles can be achieved, improving the design optimization efficiency of commercial vehicles.

[0041] Embodiment 2

[0042] Figure 2The flowchart of a method for determining the vibration isolation rate of a commercial vehicle mount provided in the second embodiment of the present invention is based on the above embodiment for refinement. In this embodiment, the operation of determining the powertrain mount information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle is specifically refined, which may specifically include: determining the set of hard point coordinates corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle, and merging and processing each hard point coordinate in the set of hard point coordinates to generate the spatial position of the powertrain corresponding to the target commercial vehicle; determining the mount stiffness information corresponding to the target commercial vehicle based on the preset design standard corresponding to the target commercial vehicle; combining and processing the spatial position of the powertrain and the mount stiffness information to obtain the powertrain mount information corresponding to the target commercial vehicle. As Figure 2 shown, the method includes:

[0043] S210. Determine the set of hard point coordinates corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle, and merge and process each hard point coordinate in the set of hard point coordinates to generate the spatial position of the powertrain corresponding to the target commercial vehicle.

[0044] Among them, the hard point coordinate may refer to the coordinate of a key position point with specific functions or constraints in the vehicle simulation model. Exemplarily, the hard point coordinate may be the coordinate of each connection position point in the vehicle simulation model. The set of hard point coordinates may refer to the set composed of each hard point coordinate corresponding to the same commercial vehicle. The spatial position of the powertrain may refer to the geometric layout and installation coordinates of the powertrain including components such as the engine, transmission, and drive shaft in the three-dimensional coordinate system of the whole vehicle.

[0045] Specifically, after obtaining the target vehicle simulation model corresponding to the target commercial vehicle, the hard point coordinates of each connection position point can be obtained in the target vehicle simulation model, and the set of hard point coordinates is generated by combination. Furthermore, the hard point coordinates related to the powertrain in the set of hard point coordinates are screened and spliced to obtain the spatial position of the powertrain corresponding to the target commercial vehicle.

[0046] S220. Determine the mount stiffness information corresponding to the target commercial vehicle based on the preset design standard corresponding to the target commercial vehicle.

[0047] Among them, the preset design standard may refer to the preset stiffness design rule. Usually, the preset design standard can be obtained at the design terminal. The mount stiffness information may refer to the stiffness information of the powertrain mount. Exemplarily, the mount stiffness information may include the stiffness of the four mounts of the front left, front right, rear left, and rear right of the powertrain in the X, Y, and Z directions.

[0048] Specifically, after determining the target commercial vehicle, the preset design criteria corresponding to the target commercial vehicle can be obtained. Furthermore, the mounting stiffness information corresponding to the target commercial vehicle can be determined according to the preset design criteria.

[0049] It should be noted that in the embodiments of the present invention, the spatial position of the powertrain and the mounting stiffness information can be determined in parallel or sequentially, and the embodiments of the present invention do not make specific limitations in this regard.

[0050] S230. Combine and process the spatial position of the powertrain and the mounting stiffness information to obtain the powertrain mounting information corresponding to the target commercial vehicle.

[0051] Specifically, after generating the spatial position of the powertrain and the mounting stiffness information, the spatial position of the powertrain and the mounting stiffness information corresponding to the same target commercial vehicle can be combined. Thus, the powertrain mounting information corresponding to the target commercial vehicle is obtained, providing a basis for subsequent operations.

[0052] S240. Perform an engine excitation test on the target engine corresponding to the target commercial vehicle based on the target test bench to obtain a set of cylinder pressure information corresponding to the target engine.

[0053] Among them, the target engine can refer to a physical engine with the same engine model as the target commercial vehicle. The engine excitation test can refer to a test method that stimulates the engine to generate a dynamic response by applying specific external excitations, such as mechanical forces, electrical signals, or load changes, and then analyzes its structure, performance, and reliability. Usually, the operating state of the engine under full throttle, half throttle, or idle conditions can be tested through the engine excitation test. The cylinder pressure information can refer to the state information generated by each cylinder of the engine during the engine excitation test. Exemplarily, the cylinder pressure information can include cylinder pressure, phase, and crank angle. Usually, one cylinder corresponds to a set of cylinder pressure information. The set of cylinder pressure information can refer to a set composed of the cylinder pressure information corresponding to each cylinder in the target engine.

[0054] S250. Perform parameter matching on the set of cylinder pressure information based on the rigid body model of the target engine to determine the engine load data corresponding to the set of cylinder pressure information as the engine load data corresponding to the target commercial vehicle.

[0055] Specifically, after obtaining the set of cylinder pressure information corresponding to the target engine, the set of cylinder pressure information corresponding to the target engine can be input into the rigid body model of the target engine, so that the rigid body model of the target engine can match the engine load data corresponding to the set of cylinder pressure information according to the set of cylinder pressure information as the engine load data corresponding to the target commercial vehicle. Thus, an effective basis can be provided for subsequent operations.

[0056] S260. Perform vibration simulation on the powertrain mount information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result.

[0057] S270. Perform numerical calculation on the vibration acceleration simulation result based on a preset mount vibration isolation rate conversion rule to obtain the target mount vibration isolation rate corresponding to the target commercial vehicle.

[0058] Among them, the preset mount vibration isolation rate conversion rule can refer to a rule preset for defining the calculation process of the mount vibration isolation rate. Exemplarily, the preset mount vibration isolation rate conversion rule can be:

[0059]

[0060] Specifically, after generating a vibration acceleration simulation result including the vibration acceleration value on the active side of the powertrain mount and the vibration acceleration value on the passive side of the powertrain mount, the preset mount vibration isolation rate conversion rule can be used to perform numerical calculation on the vibration acceleration simulation result, thereby obtaining the target mount vibration isolation rate corresponding to the target commercial vehicle.

[0061] The technical solution of the embodiment of the present invention determines the set of hard point coordinates corresponding to the target commercial vehicle through the target vehicle simulation model corresponding to the target commercial vehicle, combines and processes each hard point coordinate in the set of hard point coordinates to generate the spatial position of the powertrain corresponding to the target commercial vehicle. Determine the mount stiffness information corresponding to the target commercial vehicle based on the preset design standard corresponding to the target commercial vehicle, and combine and process the spatial position of the powertrain and the mount stiffness information to obtain the powertrain mount information corresponding to the target commercial vehicle. Furthermore, perform an engine excitation test on the target engine corresponding to the target commercial vehicle based on the target test bench to obtain a set of cylinder pressure information corresponding to the target engine. And, perform parameter matching on the set of cylinder pressure information based on the target engine rigid body model to determine the engine load data corresponding to the set of cylinder pressure information as the engine load data corresponding to the target commercial vehicle. Finally, perform vibration simulation on the powertrain mount information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result, and perform numerical calculation on the vibration acceleration simulation result based on the preset mount vibration isolation rate conversion rule to obtain the target mount vibration isolation rate corresponding to the target commercial vehicle. Since the simulation model is used to determine the mount vibration isolation rate, the problems of low generation efficiency and low accuracy of the powertrain mount vibration isolation rate of commercial vehicles are solved, and rapid simulation of the powertrain mount vibration isolation rate of commercial vehicles can be realized, improving the design and optimization efficiency of commercial vehicles.

[0062] Embodiment III

[0063] Figure 3The structural schematic diagram of a device for determining the vibration isolation rate of a commercial vehicle suspension provided in Embodiment 3 of the present invention. As Figure 3 shown, the device includes: a first determination module 310, a second determination module 320, and a vibration isolation rate generation module 330;

[0064] Among them, the first determination module 310 is used to determine the powertrain suspension information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle;

[0065] The second determination module 320 is used to perform an engine test on the target commercial vehicle based on the target test bench and the target engine rigid body model, and determine the engine load data corresponding to the target commercial vehicle;

[0066] The vibration isolation rate generation module 330 is used to perform a vibration simulation on the powertrain suspension information and the engine load data based on the target vehicle simulation model, generate a vibration acceleration simulation result, and determine the target suspension vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

[0067] The technical solution of the embodiment of the present invention determines the powertrain suspension information corresponding to the target commercial vehicle through the target vehicle simulation model corresponding to the target commercial vehicle. Furthermore, an engine test is performed on the target commercial vehicle through the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle. Finally, a vibration simulation is performed on the powertrain suspension information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result, and the target suspension vibration isolation rate corresponding to the target commercial vehicle is determined based on the vibration acceleration simulation result. Since the simulation model is used to determine the vibration isolation rate of the suspension, the problems of low generation efficiency and low accuracy of the vibration isolation rate of the commercial vehicle powertrain suspension are solved, and the rapid simulation of the vibration isolation rate of the commercial vehicle powertrain can be realized, improving the design and optimization efficiency of the commercial vehicle.

[0068] Optionally, the device for determining the vibration isolation rate of a commercial vehicle suspension may further include: a simulation model generation module, configured to obtain the basic three-dimensional model and basic attribute information corresponding to the target commercial vehicle before determining the powertrain suspension information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle; fill and process the basic three-dimensional model based on the basic attribute information to obtain the target vehicle simulation model corresponding to the target commercial vehicle.

[0069] Optionally, the first determination module 310 may specifically be used for:

[0070] Determine the set of hard point coordinates corresponding to the target commercial vehicle based on the target vehicle simulation model of the target commercial vehicle, and merge and process each hard point coordinate in the set of hard point coordinates to generate the spatial position of the powertrain corresponding to the target commercial vehicle;

[0071] Determine the mount stiffness information corresponding to the target commercial vehicle based on the preset design standard corresponding to the target commercial vehicle;

[0072] Combined process the spatial position of the powertrain and the mount stiffness information to obtain the powertrain mount information corresponding to the target commercial vehicle.

[0073] Optionally, the second determination module 320 may specifically be used for:

[0074] Perform an engine excitation test on the target engine corresponding to the target commercial vehicle based on the target test bench to obtain a set of cylinder pressure information corresponding to the target engine;

[0075] Perform parameter matching on the set of cylinder pressure information based on the target engine rigid body model to determine the engine load data corresponding to the set of cylinder pressure information as the engine load data corresponding to the target commercial vehicle.

[0076] Optionally, the vibration acceleration simulation result includes: the vibration acceleration value on the active side of the powertrain mount and the vibration acceleration value on the passive side of the powertrain mount.

[0077] Optionally, the vibration isolation rate generation module 330 may specifically be used for:

[0078] Perform numerical calculation on the vibration acceleration simulation result based on the preset mount vibration isolation rate conversion rule to obtain the target mount vibration isolation rate corresponding to the target commercial vehicle.

[0079] Optionally, the device for determining the vibration isolation rate of a commercial vehicle mount may further include: an optimization scheme generation module, which is used to, after determining the target mount vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result, perform a numerical comparison on the target mount vibration isolation rate based on a preset mount vibration isolation rate threshold to generate a numerical comparison result; determine the optimization scheme corresponding to the target commercial vehicle based on a preset optimization rule and the numerical comparison result.

[0080] The device for determining the vibration isolation rate of a commercial vehicle mount provided by the embodiments of the present invention can execute the method for determining the vibration isolation rate of a commercial vehicle mount provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method.

[0081] Embodiment Four

[0082] Figure 4FIG. 0 shows a schematic structural diagram of an electronic device 410 that can be used to implement embodiments of the present invention. The electronic device is intended to represent various forms of digital computers, such as, for example, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, for example, personal digital assistants, cellular telephones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely exemplary and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0083] As Figure 4 shown, the electronic device 410 includes at least one processor 420, and a memory communicatively connected to the at least one processor 420, such as read-only memory (ROM) 430, random access memory (RAM) 440, etc., wherein the memory stores a computer program executable by the at least one processor. The processor 420 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 430 or the computer program loaded from the storage unit 490 into the random access memory (RAM) 440. In the RAM 440, various programs and data required for the operation of the electronic device 410 can also be stored. The processor 420, the ROM 430, and the RAM 440 are connected to each other via a bus 450. The input / output (I / O) interface 460 is also connected to the bus 450.

[0084] Multiple components in the electronic device 410 are connected to the I / O interface 460, including: an input unit 470, such as a keyboard, a mouse, etc.; an output unit 480, such as various types of displays, speakers, etc.; a storage unit 490, such as a magnetic disk, an optical disk, etc.; and a communication unit 4100, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 4100 allows the electronic device 410 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0085] The processor 420 can be various general-purpose and / or special-purpose processing components having processing and computing capabilities. Some examples of the processor 420 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 420 executes the various methods and processes described above, such as the method for determining the vibration isolation rate of a commercial vehicle suspension.

[0086] The method includes:

[0087] Determine the powertrain mount information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle;

[0088] Conduct engine tests on the target commercial vehicle based on the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle;

[0089] Conduct vibration simulation on the powertrain mount information and the engine load data based on the target vehicle simulation model to generate a vibration acceleration simulation result, and determine the target mount isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

[0090] In some embodiments, the method for determining the commercial vehicle mount isolation rate can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as storage unit 490. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 410 via the ROM 430 and / or the communication unit 4100. When the computer program is loaded into the RAM 440 and executed by the processor 420, one or more steps of the method for determining the commercial vehicle mount isolation rate described above can be executed. Alternatively, in other embodiments, the processor 420 can be configured to execute the method for determining the commercial vehicle mount isolation rate by any other suitable means (e.g., by means of firmware).

[0091] The various embodiments of the systems and techniques described above in this article can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a dedicated or general-purpose programmable processor, and can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0092] A computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, a special purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer programs can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine, or entirely on the remote machine or server.

[0093] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0094] In order to provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0095] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0096] A computing system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The client-server relationship is created by computer programs that run on respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0097] An embodiment of the present application also discloses a computer program product, which includes a computer program that, when executed by a processor, implements the method for determining the vibration isolation rate of a commercial vehicle suspension provided in any embodiment of the present application. This program product and the method for determining the vibration isolation rate of a commercial vehicle suspension disclosed in each embodiment of the present application belong to the same inventive concept, and thus will not be elaborated herein.

[0098] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0099] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for determining the vibration isolation rate of a commercial vehicle suspension, characterized in that: include: Determining powertrain suspension information corresponding to the target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle; Performing an engine test on the target commercial vehicle based on a target test bench and a target engine rigid body model to determine engine load data corresponding to the target commercial vehicle; Vibration simulation is performed on the powertrain suspension information and the engine load data based on a target vehicle simulation model to generate a vibration acceleration simulation result, and a target suspension vibration isolation rate corresponding to the target commercial vehicle is determined based on the vibration acceleration simulation result.

2. The method according to claim 1, characterized in that Before determining the powertrain suspension information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle, the method further includes: Obtain the basic three-dimensional model and basic attribute information corresponding to the target commercial vehicle; The basic three-dimensional model is filled and processed based on the basic attribute information to obtain a target vehicle simulation model corresponding to the target commercial vehicle.

3. The method according to claim 1, characterized in that The determining the powertrain suspension information corresponding to the target commercial vehicle based on the target vehicle simulation model corresponding to the target commercial vehicle includes: Determine a hard point coordinate set corresponding to the target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle, merge and process each hard point coordinate in the hard point coordinate set, and generate a powertrain spatial position corresponding to the target commercial vehicle; Determining suspension stiffness information corresponding to the target commercial vehicle based on a preset design standard corresponding to the target commercial vehicle; The powertrain spatial position and the suspension stiffness information are combined and processed to obtain powertrain suspension information corresponding to the target commercial vehicle.

4. The method according to claim 1, characterized in that: The performing an engine test on the target commercial vehicle based on the target test bench and the target engine rigid body model to determine the engine load data corresponding to the target commercial vehicle includes: Performing an engine excitation test on a target engine corresponding to the target commercial vehicle based on a target test bench to obtain a cylinder pressure information set corresponding to the target engine; Parameter matching is performed on the cylinder pressure information set based on a rigid body model of the target engine to determine engine load data corresponding to the cylinder pressure information set as the engine load data corresponding to the target commercial vehicle.

5. The method according to claim 1, characterized in that The vibration acceleration simulation result includes: the vibration acceleration value of the active side of the powertrain mount and the vibration acceleration value of the passive side of the powertrain mount.

6. The method according to claim 1, characterized in that The determining a target suspension vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result includes: The vibration acceleration simulation result is numerically calculated based on a preset suspension vibration isolation rate conversion rule to obtain a target suspension vibration isolation rate corresponding to the target commercial vehicle.

7. The method according to claim 1, characterized in that After determining the target suspension vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result, the method further includes: Performing numerical comparison on the target suspension vibration isolation rate based on a preset suspension vibration isolation rate threshold to generate a numerical comparison result; An optimization scheme corresponding to the target commercial vehicle is determined based on preset optimization rules and the numerical comparison result.

8. A device for determining the vibration isolation rate of a commercial vehicle suspension, characterized in that: include: A first determination module, configured to determine powertrain suspension information corresponding to a target commercial vehicle based on a target vehicle simulation model corresponding to the target commercial vehicle; A second determination module is used to perform an engine test on the target commercial vehicle based on a target test bench and a target engine rigid body model to determine engine load data corresponding to the target commercial vehicle; The vibration isolation rate generating module is used to perform vibration simulation on the powertrain suspension information and the engine load data based on a target vehicle simulation model, generate a vibration acceleration simulation result, and determine a target suspension vibration isolation rate corresponding to the target commercial vehicle based on the vibration acceleration simulation result.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for determining the commercial vehicle suspension vibration isolation rate according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for determining the commercial vehicle suspension vibration isolation rate according to any one of claims 1 to 7 when executed.

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