Vehicle parameter calculation method and system, electronic device and storage medium

Abstract

This invention proposes a vehicle parameter calculation method, system, electronic device, and storage medium. The vehicle parameter calculation method first obtains a vehicle bill of materials (BOM) containing attribute parameters of multiple vehicle components and configuration parameters. Then, based on the BOM, it calculates vehicle performance parameters, including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius. By obtaining parameters directly from the BOM, it avoids the tedious manual searching and verification required for calculating performance parameters for each new vehicle model or configuration, thus improving calculation efficiency. Furthermore, the BOM can be automatically updated based on changes in specific parameters, facilitating synchronized automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple vehicle performance parameters based on the BOM.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a method, system, electronic device, and storage medium for calculating vehicle parameters. Background Technology

[0002] In the process of vehicle research and development, configuration management, and sales support, it is crucial to accurately and efficiently calculate key performance parameters (such as maximum speed, maximum gradeability, minimum turning radius, and front and rear turning radii). These parameters are the foundation for evaluating the rationality of vehicle design, meeting regulatory requirements, and providing customers with accurate performance data. Currently, the traditional method commonly used in the industry involves engineers or technicians manually searching and compiling the necessary parameters (such as engine torque, transmission ratio, tire size, wheelbase, etc.) from technical documents, drawings, or scattered data sources based on specific vehicle configurations, and then substituting them into the corresponding physical formulas for individual calculations. This calculation method is not only inefficient and prone to errors, but also fails to automatically update performance parameter calculations when component parameters change, leading to calculation errors. Therefore, current calculations of vehicle performance parameters suffer from low efficiency and difficulty in guaranteeing accuracy. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the related art. Therefore, the object of the present invention is to provide a vehicle parameter calculation method, system, electronic device, and storage medium.

[0004] The present invention proposes a vehicle parameter calculation method, comprising the following steps: obtaining a bill of materials for the vehicle, wherein the bill of materials includes attribute parameters of multiple components of the vehicle and configuration parameters of the vehicle; calculating performance parameters of the vehicle based on the bill of materials, wherein the performance parameters include at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

[0005] According to the vehicle parameter calculation method of this invention, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is first obtained. Then, based on the BOM, vehicle performance parameters, including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Furthermore, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple vehicle performance parameters based on the BOM.

[0006] In addition, the vehicle parameter calculation method according to embodiments of the present invention may also have the following additional technical features: Furthermore, the configuration parameters include at least: total vehicle weight, front overhang, rear overhang, and rear width; the plurality of components include at least an engine, transmission, rear axle, tires, driveshaft, steering axle, frame, and body; the engine's attribute parameters include at least: maximum engine speed and maximum engine torque; the transmission's attribute parameters include at least: highest gear ratio, first gear ratio, and transmission efficiency; the rear axle's attribute parameters include at least: rear axle ratio and rear axle transmission efficiency; the tire's attribute parameters include at least: tire outer diameter; the driveshaft's attribute parameters include at least: driveshaft transmission efficiency; the steering axle's attribute parameters include at least: track width, kingpin distance, maximum inner wheel steering angle, and maximum outer wheel steering angle; the frame's attribute parameters include at least: wheelbase and center distance; and the body's attribute parameters include at least: body length and body width. This allows for the calculation of specific vehicle performance parameters based on the specific attribute parameters and configuration parameters in the bill of materials, helping to ensure the accuracy and reliability of the calculations.

[0007] Furthermore, calculating the maximum speed of the vehicle based on the bill of materials includes: determining the drive wheel load radius based on the tire outer diameter; determining the overall reduction ratio based on the gearbox's highest gear ratio and the rear axle ratio; and determining the maximum speed based on the engine's maximum speed, the drive wheel load radius, and the overall reduction ratio. This allows the maximum speed of the vehicle to be calculated based on the bill of materials, helping to ensure the accuracy and reliability of the maximum speed calculation.

[0008] Furthermore, calculating the maximum gradeability of the vehicle based on the bill of materials includes: determining the overall transmission efficiency based on the transmission efficiency of the gearbox, the transmission efficiency of the rear axle, and the transmission efficiency of the driveshaft; determining the maximum driving force based on the maximum engine torque, the first gear ratio of the gearbox, the rear axle ratio, and the overall transmission efficiency; determining the vehicle weight based on the total vehicle and cargo weight; determining the maximum slope angle based on the vehicle weight, rolling resistance, air resistance, and the maximum driving force; and determining the maximum gradeability based on the maximum slope angle. This allows the maximum gradeability of the vehicle to be calculated based on the bill of materials, helping to ensure the accuracy and reliability of the maximum gradeability calculation.

[0009] Furthermore, calculating the minimum turning radius of the vehicle based on the bill of materials includes: determining a first distance from the tire center plane to the kingpin center based on the wheelbase and the kingpin distance; determining the minimum inner wheel turning radius based on the wheelbase, the maximum inner wheel steering angle, the kingpin distance, and the first distance; determining the minimum outer wheel turning radius based on the wheelbase and the maximum outer wheel steering angle; and determining the minimum turning radius based on the minimum inner wheel turning radius and the minimum outer wheel turning radius. This allows the minimum turning radius to be calculated based on the bill of materials, helping to ensure the accuracy and reliability of the minimum turning radius calculation.

[0010] Furthermore, the calculation of the vehicle's front turning radius based on the bill of materials includes: determining a second distance from the rear end of the vehicle body to the center line of the first axle based on the vehicle body length and the front overhang; and determining the front turning radius based on the wheelbase, the front distance of the saddle, the vehicle body width, and the second distance. This allows the calculation of the front turning radius based on the bill of materials, which helps ensure the accuracy and reliability of the front turning radius calculation.

[0011] Furthermore, the rear turning radius of the vehicle is calculated based on the bill of materials, including: determining the rear turning radius based on the rear overhang of the vehicle, the front distance of the saddle, and the rear width of the vehicle; this allows the rear turning radius to be calculated based on the bill of materials, which helps to ensure the accuracy and reliability of the rear turning radius calculation.

[0012] To address the aforementioned problems, this invention also proposes a vehicle parameter calculation system, comprising: an acquisition module for acquiring a bill of materials for the vehicle, wherein the bill of materials includes attribute parameters of multiple components of the vehicle and configuration parameters of the vehicle; and a calculation module for calculating performance parameters of the vehicle based on the bill of materials, wherein the performance parameters include at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

[0013] The vehicle parameter calculation system according to an embodiment of the present invention is used to implement the vehicle parameter calculation method of the above embodiments of the present invention. First, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is obtained. Then, based on the BOM, performance parameters of the vehicle, including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Simultaneously, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0014] To address the aforementioned problems, the present invention also proposes an electronic device, comprising: a vehicle parameter calculation system as described in the above embodiments of the present invention, or a processor, a memory, and a vehicle parameter calculation program stored in the memory and executable on the processor, wherein the vehicle parameter calculation program, when executed by the processor, implements the vehicle parameter calculation method as described in the above embodiments of the present invention.

[0015] An electronic device according to an embodiment of the present invention is used to implement the vehicle parameter calculation method of the above embodiments of the present invention. First, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is obtained. Then, based on the BOM, performance parameters of the vehicle, including at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Simultaneously, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0016] To address the aforementioned problems, the present invention also proposes a computer-readable storage medium storing a vehicle parameter calculation program, which, when executed by a processor, implements the vehicle parameter calculation method as described in the above embodiments of the present invention.

[0017] According to an embodiment of the present invention, a computer-readable storage medium storing a vehicle parameter calculation program thereon, when executed by a processor, is used to implement the vehicle parameter calculation method of the above-described embodiment of the present invention. First, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is obtained. Then, based on the BOM, performance parameters of the vehicle, including at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Simultaneously, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations, thereby comprehensively ensuring high accuracy and efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a flowchart of a vehicle parameter calculation method according to an embodiment of the present invention; Figure 2 This is a structural block diagram of a vehicle parameter calculation system according to a specific embodiment of the present invention; Figure 3 This is a structural block diagram of a vehicle parameter calculation system according to an embodiment of the present invention.

[0020] Figure label: 100 - Vehicle parameter calculation system; 110 - Acquisition module; 120 - Calculation module. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0022] This invention provides a vehicle parameter calculation method, system, electronic device, and storage medium, as described below. Figures 1-3 A method, system, electronic device, and storage medium for calculating vehicle parameters according to embodiments of the present invention are described.

[0023] Figure 1 This is a flowchart of a vehicle parameter calculation method according to an embodiment of the present invention. Figure 1As shown, a vehicle parameter calculation method according to an embodiment of the present invention includes the following steps: Step S1: Obtain the bill of materials for the vehicle, which includes attribute parameters of multiple parts of the vehicle and configuration parameters of the vehicle.

[0024] In a specific embodiment, the vehicle's bill of materials (BOM) is first obtained. Specifically, the BOM includes attribute parameters of multiple vehicle components and vehicle configuration parameters. For example, it can be obtained through a parameterized and expanded vehicle BOM (Bill of Materials) data model, or one already associated with a performance parameter database. This BOM not only contains the structural relationships of the components, but more importantly, its component attribute fields are predefined and populated with the key physical parameters required for calculation. These parameters can be associated with the BOM in the following ways: 1. Attribute Expansion: Dedicated performance parameter fields are created for key components (such as engines, transmissions, axles, and tires) in the BOM system and are mandatory during data creation or review processes; 2. Data Mapping: A relationship is established between the BOM material code and the enterprise's internal "component performance parameter database" or "simulation specification database," automatically mapping parameters through the code; 3. Configurator Generation: In configurator-based order design, based on the user-selected configuration, the system automatically generates a virtual "super BOM" or "simulation BOM" containing all specific parameter instances.

[0025] Specifically, according to the vehicle parameter calculation method of the present invention, a bill of materials for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is first obtained. This facilitates subsequent calculations based directly on the parameters in the bill of materials, avoiding the tedious manual searching and parameter verification work required for calculating the performance parameters of each new vehicle model or configuration. This helps improve calculation efficiency, and the bill of materials can be automatically updated according to changes in specific parameters, which helps to achieve synchronous automatic updates of performance parameter calculations, thereby ensuring the accuracy of the calculations.

[0026] Step S2: Calculate the vehicle's performance parameters based on the bill of materials. The performance parameters include at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

[0027] In a specific embodiment, the vehicle's performance parameters are then calculated based on the bill of materials. Specifically, the performance parameters include at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius. For example, a pre-written calculation program can be used to automatically extract the parameters from the bill of materials required for calculating the performance parameters and perform the calculations automatically, thereby improving calculation efficiency and ensuring calculation reliability.

[0028] Specifically, according to the vehicle parameter calculation method of the present invention, the vehicle performance parameters including at least one of the following, such as maximum speed, maximum gradeability, minimum turning radius, front turning radius and rear turning radius, are calculated based on the bill of materials. This allows for the automatic calculation of various vehicle performance parameters based on the bill of materials, which helps to ensure the reliability and efficiency of the calculation.

[0029] Therefore, the vehicle parameter calculation method according to embodiments of the present invention first obtains a vehicle bill of materials (BOM) including attribute parameters of multiple vehicle components and vehicle configuration parameters. Then, based on the BOM, it calculates vehicle performance parameters including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Furthermore, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple vehicle performance parameters based on the BOM.

[0030] In one embodiment of the present invention, the configuration parameters include at least: total vehicle weight, front overhang, rear overhang, and rear width; the multiple components include at least an engine, transmission, rear axle, tires, driveshaft, steering axle, frame, and body; the engine's attribute parameters include at least: maximum engine speed and maximum engine torque; the transmission's attribute parameters include at least: the highest gear ratio, first gear ratio, and transmission efficiency; the rear axle's attribute parameters include at least: rear axle ratio and rear axle transmission efficiency; the tire's attribute parameters include at least: tire outer diameter; the driveshaft's attribute parameters include at least: driveshaft transmission efficiency; the steering axle's attribute parameters include at least: track width, kingpin distance, maximum inner wheel steering angle, and maximum outer wheel steering angle; the frame's attribute parameters include at least: wheelbase and center distance; and the body's attribute parameters include at least: body length and body width.

[0031] In a specific embodiment, the configuration parameters include at least: gross vehicle weight, front overhang, rear overhang, and rear width. Specifically, the gross vehicle weight is denoted as W, and the front overhang as L. front The rear suspension of the entire vehicle is denoted as L, for example. rear The width of the rear of the vehicle is denoted as W. rear .

[0032] In a specific embodiment, the multiple components include at least an engine, a transmission, a rear axle, tires, a driveshaft, a steering axle, a frame, and a body. That is, the attribute parameters of the multiple components include at least the attribute parameters of the engine, the transmission, the rear axle, the tires, the driveshaft, the steering axle, the frame, and the body.

[0033] In a specific embodiment, the engine's attribute parameters include at least: the engine's maximum speed and the engine's maximum torque. Specifically, the engine's maximum speed is denoted as n, and the engine's maximum torque is denoted as M. e .

[0034] In a specific embodiment, the attribute parameters of the transmission include at least: the highest gear ratio, the first gear ratio, and the transmission efficiency. Specifically, the highest gear ratio is denoted as i1, and the first gear ratio is denoted as i... g The transmission efficiency of a gearbox is denoted as η. g .

[0035] In a specific embodiment, the attribute parameters of the rear axle include at least: the rear axle speed ratio and the rear axle transmission efficiency. Specifically, the rear axle speed ratio is denoted as i0, and the rear axle transmission efficiency is denoted as η0.

[0036] In a specific embodiment, the tire's attribute parameters include at least the tire's outer diameter. Specifically, the tire's outer diameter is denoted as d, for example.

[0037] In a specific embodiment, the attribute parameters of the drive shaft include at least the drive shaft transmission efficiency. Specifically, the drive shaft transmission efficiency is denoted as η1, for example.

[0038] In a specific embodiment, the attribute parameters of the steering axle include at least: wheelbase, kingpin distance, maximum steering angle of the inner wheel, and maximum steering angle of the outer wheel. Specifically, the wheelbase is denoted as l1, the kingpin distance as K, and the maximum steering angle of the inner wheel as α. max The maximum steering angle of the outer wheel is denoted as β. max .

[0039] In a specific embodiment, the frame's attribute parameters include at least: wheelbase and saddle distance. Specifically, the wheelbase is denoted as L, and the saddle distance is denoted as L1.

[0040] In a specific embodiment, the vehicle body's attribute parameters include at least: vehicle body length and vehicle body width. Specifically, the vehicle body length is denoted as L, for example. B The width of the vehicle body is denoted as W. B .

[0041] It should be noted that, in the following embodiments, when the vehicle parameters are calculated using formulas, in order to avoid redundancy, the configuration parameters and attribute parameters are all referred to by the symbols in the above specific embodiments, and will not be repeated below.

[0042] Specifically, according to the vehicle parameter calculation method of the present invention, the configuration parameters include at least: total vehicle weight, front overhang, rear overhang, and rear width; multiple components include at least: engine, transmission, rear axle, tires, driveshaft, steering axle, frame, and body; engine attribute parameters include at least: maximum engine speed and maximum engine torque; transmission attribute parameters include at least: highest gear ratio, first gear ratio, and transmission efficiency; rear axle attribute parameters include at least: rear axle ratio and rear axle transmission efficiency; tire attribute parameters include at least: tire outer diameter; driveshaft attribute parameters include at least: driveshaft transmission efficiency; steering axle attribute parameters include at least: track width, kingpin distance, maximum inner wheel steering angle, and maximum outer wheel steering angle; frame attribute parameters include at least: wheelbase and front seat distance; and body attribute parameters include at least: body length and body width. This allows for the calculation of specific vehicle performance parameters based on the specific attribute parameters and configuration parameters in the bill of materials, helping to ensure the accuracy and reliability of the calculations.

[0043] In one embodiment of the present invention, step S2 calculates the maximum vehicle speed according to the bill of materials, including: determining the drive wheel load radius based on the tire outer diameter; determining the total reduction ratio based on the gearbox's highest gear ratio and the rear axle ratio; and determining the maximum vehicle speed based on the engine's maximum speed, the drive wheel load radius, and the total reduction ratio.

[0044] In a specific embodiment, the drive wheel load radius is first determined based on the tire outer diameter. Then, the overall reduction ratio is determined based on the gearbox's highest gear ratio and the rear axle ratio. Finally, the maximum vehicle speed is determined based on the engine's maximum speed, the drive wheel load radius, and the overall reduction ratio. Specifically, the maximum vehicle speed can be denoted as V, and can be calculated using V = (2πR × 60 × n) / (1000 / I), where the drive wheel load radius R = 2.99 × d / (2π), and I = i1 × i0.

[0045] Specifically, according to the vehicle parameter calculation method of the present invention, the drive wheel load radius is first determined based on the tire outer diameter, then the total reduction ratio is determined based on the gearbox's highest gear ratio and the rear axle ratio, and finally the maximum vehicle speed is determined based on the engine's maximum speed, the drive wheel load radius, and the total reduction ratio. In this way, the maximum vehicle speed can be calculated based on the bill of materials, which helps to ensure the accuracy and reliability of the maximum vehicle speed calculation.

[0046] In one embodiment of the present invention, step S2 calculates the maximum gradeability of the vehicle based on the bill of materials, including: determining the total transmission efficiency based on the transmission efficiency of the gearbox, the transmission efficiency of the rear axle, and the transmission efficiency of the drive shaft; determining the maximum driving force based on the maximum engine torque, the first gear ratio of the gearbox, the rear axle ratio, and the total transmission efficiency; determining the vehicle weight based on the total weight of the vehicle and cargo; determining the maximum slope angle based on the vehicle weight, rolling resistance, air resistance, and the maximum driving force; and determining the maximum gradeability based on the maximum slope angle.

[0047] In a specific embodiment, the overall transmission efficiency is first determined based on the transmission efficiency of the gearbox, the rear axle, and the driveshaft. Then, the maximum driving force is determined based on the engine's maximum torque, the gearbox's first gear ratio, the rear axle ratio, and the overall transmission efficiency. Next, the vehicle weight is determined based on the total weight of the vehicle and cargo. Then, the maximum gradient angle is determined based on the vehicle weight, rolling resistance, air resistance, and the maximum driving force. Finally, the maximum gradeability is determined based on the maximum gradient angle. Specifically, the maximum gradeability is denoted as arctanα, where α is the gradient angle, which can be calculated using α = arcsin[F]. t -(F f +F w The calculation is performed using ] / G, where the maximum driving force F for each gear is... t =M e ×i g ×i0×η / R, transmission system efficiency η=η g ×η0×η1, rolling resistance F f Ignore the value of 0, air resistance F w Ignoring the value as 0, the total weight of the vehicle is G = W × g, where g is the acceleration due to gravity.

[0048] Specifically, according to the vehicle parameter calculation method of the present invention, the total transmission efficiency is first determined based on the transmission efficiency of the gearbox, the transmission efficiency of the rear axle, and the transmission efficiency of the drive shaft. Then, the maximum driving force is determined based on the maximum engine torque, the first gear ratio of the gearbox, the rear axle ratio, and the total transmission efficiency. Next, the vehicle weight is determined based on the total weight of the vehicle and cargo. Then, the maximum gradient angle is determined based on the vehicle weight, rolling resistance, air resistance, and the maximum driving force. Finally, the maximum gradeability is determined based on the maximum gradient angle. In this way, the maximum gradeability of the vehicle can be calculated based on the bill of materials, which helps to ensure the accuracy and reliability of the maximum gradeability calculation.

[0049] In one embodiment of the present invention, step S2 calculates the minimum turning radius of the vehicle according to the bill of materials, including: determining a first distance from the center plane of the tire to the center of the kingpin based on the wheelbase and the kingpin distance; determining the minimum inner wheel turning radius based on the wheelbase, the maximum steering angle of the inner wheel, the kingpin distance and the first distance; determining the minimum outer wheel turning radius based on the wheelbase and the maximum steering angle of the outer wheel; and determining the minimum turning radius based on the minimum inner wheel turning radius and the minimum outer wheel turning radius.

[0050] In a specific embodiment, the first distance from the tire center plane to the kingpin center is first determined based on the wheelbase and kingpin distance. Then, the minimum inner wheel turning radius is determined based on the wheelbase, the maximum inner wheel steering angle, the kingpin distance, and the first distance. Next, the minimum outer wheel turning radius is determined based on the wheelbase and the maximum outer wheel steering angle. Finally, the minimum turning radius is determined based on the minimum inner wheel turning radius and the minimum outer wheel turning radius. Specifically, the minimum turning radius is denoted as R, for example. min That is, V=R min =(R in +R out The calculation is performed using ) / 2, where the minimum inner wheel turning radius R is... in =sqrt ((L / sinα max ) 2 +K 2 +2KL / tanα max )+l, the distance from the tire center plane to the kingpin center l=(l1-K) / 2, the minimum outer wheel turning radius R out =L / sinβ max +l.

[0051] Specifically, according to the vehicle parameter calculation method of the present invention, the first distance from the tire center plane to the kingpin center is first determined based on the wheelbase and kingpin distance. Then, the minimum inner wheel turning radius is determined based on the wheelbase, the maximum inner wheel steering angle, the kingpin distance, and the first distance. Next, the minimum outer wheel turning radius is determined based on the wheelbase and the maximum outer wheel steering angle. Finally, the minimum turning radius is determined based on the minimum inner wheel turning radius and the minimum outer wheel turning radius. In this way, the minimum turning radius can be calculated based on the bill of materials, which helps to ensure the accuracy and reliability of the minimum turning radius calculation.

[0052] In one embodiment of the present invention, step S2 calculates the front turning radius of the vehicle according to the bill of materials, including: determining the second distance from the rear end of the vehicle body to the center line of the first axle based on the vehicle body length and the front overhang of the vehicle; and determining the front turning radius based on the wheelbase, the front distance of the saddle, the vehicle body width, and the second distance.

[0053] In a specific embodiment, the second distance from the rearmost end of the vehicle body to the centerline of the first axle is first determined based on the vehicle body length and the front overhang. Then, the front turning radius is determined based on the wheelbase, the front seat distance, the vehicle width, and the second distance. Specifically, the front turning radius is denoted as R1, and can be calculated using R1=sqrt((L-L1-L2)). 2 +(W B / 2) 2 The calculation is performed, where the distance L2 from the rearmost end of the vehicle body to the center line of the first axle is L. B -L front .

[0054] Specifically, according to the vehicle parameter calculation method of the present invention, the second distance from the rear end of the vehicle body to the center line of the first axle is first determined based on the vehicle body length and the front overhang of the vehicle. Then, the front turning radius is determined based on the wheelbase, the front distance of the saddle, the vehicle body width, and the second distance. In this way, the front turning radius can be calculated according to the bill of materials, which helps to ensure the accuracy and reliability of the front turning radius calculation.

[0055] In one embodiment of the present invention, step S2 calculates the rear turning radius of the vehicle according to the bill of materials, including: determining the rear turning radius based on the rear overhang, the front distance of the saddle, and the rear width of the vehicle.

[0056] In a specific embodiment, the rear turning radius is determined based on the vehicle's rear overhang, the distance between the front and rear seats, and the width of the rear of the vehicle. Specifically, the rear turning radius is denoted as R2, and can be calculated using R2 = sqrt((L...). rear +L1) 2 +(W rear / 2) 2 ) to perform calculations.

[0057] Specifically, according to the vehicle parameter calculation method of the present invention, the rear turning radius is determined based on the rear overhang, the front distance of the saddle, and the rear width of the vehicle; thus, the rear turning radius can be calculated based on the bill of materials, which helps to ensure the accuracy and reliability of the rear turning radius calculation.

[0058] The vehicle parameter calculation method of the above embodiments of the present invention will be further described below with reference to a specific embodiment. In this specific embodiment, a vehicle parameter calculation system is provided, which is used to implement the vehicle parameter calculation method of the above embodiments of the present invention.

[0059] Figure 2 This is a schematic diagram of the system architecture of a vehicle parameter calculation system according to a specific embodiment of the present invention. Figure 2 As shown in this specific embodiment, the vehicle parameter calculation system includes a pickup module, multiple calculation modules, and an output module.

[0060] In this specific embodiment, the pickup module can automatically pick up the vehicle's BOM component parameters and configuration parameters. Specifically, the component parameters include at least the engine's attribute parameters, the transmission's attribute parameters, the rear axle's attribute parameters, the tire's attribute parameters, the driveshaft's attribute parameters, the steering axle's attribute parameters, the chassis's attribute parameters, and the body's attribute parameters. The configuration parameters include at least the vehicle's gross weight, front overhang, rear overhang, and rear width. The engine's attribute parameters include at least the engine's maximum speed and maximum torque. The transmission's attribute parameters include at least the transmission's highest gear ratio, first gear ratio, and transmission efficiency. The rear axle's attribute parameters include at least the rear axle ratio and rear axle transmission efficiency. The tire's attribute parameters include at least the tire's outer diameter. The driveshaft's attribute parameters include at least the driveshaft's transmission efficiency. The steering axle's attribute parameters include at least the wheelbase, kingpin distance, maximum inner wheel steering angle, and maximum outer wheel steering angle. The chassis's attribute parameters include at least the wheelbase and front seat distance. The body's attribute parameters include at least the body length and body width.

[0061] In this specific embodiment, multiple calculation modules are connected to the pickup module, and these modules can calculate different performance parameters of the vehicle. Specifically, the different performance parameters include at least the maximum vehicle speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, and the multiple calculation modules include at least a maximum vehicle speed calculation module, a maximum gradeability calculation module, a minimum turning radius calculation module, a front turning radius calculation module, and a rear turning radius calculation module.

[0062] In this specific embodiment, the output module is connected to multiple calculation modules, and the output module can output the calculation results of different performance parameters.

[0063] In this specific embodiment, the calculation of the maximum vehicle speed calculation module includes: maximum vehicle speed V = (2πR × 60 × n) / (1000 / I), where the load radius of the drive wheel R = 2.99 × d / (2π), d is the outer diameter of the tire, n is the maximum speed of the engine, and the total reduction ratio I = the highest gear ratio of the gearbox i1 × the rear axle ratio i0.

[0064] In this specific embodiment, the calculation of the maximum gradient calculation module includes: the maximum gradient is arctanα, where α is the slope angle, α=arcsin[F t -(F f +F w )] / G, F t For maximum driving force in each gear, F t =M e ×i g ×i0×η / R,M e i is the engine's maximum torque. gi is the first gear ratio of the transmission, i0 is the rear axle ratio, and the transmission efficiency η = transmission efficiency η g × Rear axle transmission efficiency η0 × Drive shaft transmission efficiency η1, Rolling resistance F f Ignore the value of 0, air resistance F w Ignoring the value as 0, the total vehicle weight G = total vehicle and cargo weight W × gravitational acceleration g.

[0065] In this specific embodiment, the calculation of the minimum turning radius by the minimum turning radius calculation module includes: minimum turning radius R min =(R in +R out ) / 2, where R in R is the minimum inner wheel turning radius. out R is the minimum turning radius of the outer wheel. in =sqrt ((L / sinα max ) 2 +K 2 +2KL / tanα max )+l, where L is the wheelbase and α max The maximum steering angle of the inner wheel is given by K, the kingpin distance is given by l = (track width l1 - kingpin distance K) / 2, and R is given by R. out =L / sinβ max +l, β max This is the maximum steering angle of the outer wheel.

[0066] In this specific embodiment, the calculation of the forward turning radius calculation module includes: forward turning radius R1 = sqrt((L - L1 - L2)) 2 +(W B / 2) 2 Where L is the wheelbase, L1 is the front distance of the saddle, and L2 is the distance from the rear end of the vehicle body to the center line of the first axle, which is equal to the vehicle length L. B - Front overhang of the whole vehicle L front W B This refers to the width of the vehicle body.

[0067] In this specific embodiment, the calculation of the back turning radius calculation module includes: Back turning radius R2 = sqrt((L rear +L1) 2 +(W rear / 2) 2 ), where L rear For the rear suspension of the entire vehicle, W rear This refers to the width of the rear of the vehicle.

[0068] As can be seen in this specific embodiment, the vehicle parameter calculation system automatically picks up the parameters of the whole vehicle BOM components based on the picking module, avoiding the trouble of repeatedly and tediously finding and calculating parameters individually. Based on multiple calculation modules, it automatically and efficiently calculates various performance parameters of the whole vehicle, which greatly improves the calculation efficiency and provides a basis for the evaluation of the whole vehicle performance.

[0069] In summary, the vehicle parameter calculation method according to embodiments of the present invention first obtains a vehicle bill of materials (BOM) including attribute parameters of multiple vehicle components and vehicle configuration parameters. Then, based on the BOM, it calculates vehicle performance parameters including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Furthermore, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple vehicle performance parameters based on the BOM.

[0070] A further embodiment of the present invention discloses a vehicle parameter calculation system. Figure 3 This is a structural block diagram of a vehicle parameter calculation system according to an embodiment of the present invention, such as... Figure 3 As shown, the vehicle parameter calculation system 100 includes an acquisition module 110 and a calculation module 120.

[0071] Specifically, the acquisition module 110 is used to acquire the bill of materials for the vehicle, wherein the bill of materials includes attribute parameters of multiple parts of the vehicle and configuration parameters of the vehicle; the calculation module 120 is used to calculate the performance parameters of the vehicle based on the bill of materials, wherein the performance parameters include at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

[0072] In one embodiment of the present invention, the configuration parameters include at least: total vehicle weight, front overhang, rear overhang, and rear width; the multiple components include at least an engine, transmission, rear axle, tires, driveshaft, steering axle, frame, and body; the engine's attribute parameters include at least: maximum engine speed and maximum engine torque; the transmission's attribute parameters include at least: the highest gear ratio, first gear ratio, and transmission efficiency; the rear axle's attribute parameters include at least: rear axle ratio and rear axle transmission efficiency; the tire's attribute parameters include at least: tire outer diameter; the driveshaft's attribute parameters include at least: driveshaft transmission efficiency; the steering axle's attribute parameters include at least: track width, kingpin distance, maximum inner wheel steering angle, and maximum outer wheel steering angle; the frame's attribute parameters include at least: wheelbase and center distance; and the body's attribute parameters include at least: body length and body width.

[0073] In one embodiment of the present invention, the calculation module 120 calculates the maximum speed of the vehicle according to the bill of materials, including: determining the load radius of the drive wheels according to the outer diameter of the tires; determining the total reduction ratio according to the gearbox's highest gear ratio and the rear axle ratio; and determining the maximum speed according to the engine's maximum speed, the drive wheel load radius, and the total reduction ratio.

[0074] In one embodiment of the present invention, the calculation module 120 calculates the maximum gradeability of the vehicle according to the bill of materials, including: determining the total transmission efficiency based on the transmission efficiency of the gearbox, the transmission efficiency of the rear axle, and the transmission efficiency of the drive shaft; determining the maximum driving force based on the maximum engine torque, the first gear ratio of the gearbox, the rear axle ratio, and the total transmission efficiency; determining the vehicle weight based on the total weight of the vehicle and cargo; determining the maximum slope angle based on the vehicle weight, rolling resistance, air resistance, and the maximum driving force; and determining the maximum gradeability based on the maximum slope angle.

[0075] In one embodiment of the present invention, the calculation module 120 calculates the minimum turning radius of the vehicle according to the bill of materials, including: determining a first distance from the center plane of the tire to the center of the kingpin based on the wheelbase and the kingpin center distance; determining the minimum inner wheel turning radius based on the wheelbase, the maximum steering angle of the inner wheel, the kingpin center distance and the first distance; determining the minimum outer wheel turning radius based on the wheelbase and the maximum steering angle of the outer wheel; and determining the minimum turning radius based on the minimum inner wheel turning radius and the minimum outer wheel turning radius.

[0076] In one embodiment of the present invention, the calculation module 120 calculates the front turning radius of the vehicle according to the bill of materials, including: determining the second distance from the rear end of the vehicle body to the center line of the first axle based on the vehicle body length and the front overhang of the vehicle; and determining the front turning radius based on the wheelbase, the front distance of the saddle, the vehicle body width and the second distance.

[0077] In one embodiment of the present invention, the calculation module 120 calculates the rear turning radius of the vehicle according to the bill of materials, including: determining the rear turning radius based on the rear overhang, the front distance of the saddle, and the rear width of the vehicle.

[0078] It should be noted that the specific implementation of the vehicle parameter calculation system 100 in this embodiment of the invention is similar to the specific implementation of the vehicle parameter calculation method described in the above embodiment of the invention. For details, please refer to the description of the vehicle parameter calculation method section. To reduce redundancy, it will not be repeated here.

[0079] The vehicle parameter calculation system 100 according to an embodiment of the present invention is used to implement the vehicle parameter calculation method of the above embodiment of the present invention. First, it obtains a bill of materials (BOM) of the vehicle, which includes attribute parameters of multiple vehicle components and configuration parameters of the vehicle. Then, it calculates the vehicle's performance parameters, including at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, based on the BOM. By obtaining parameters through the BOM, it avoids the problem of repeatedly performing tedious manual searching and parameter verification for each new vehicle model or configuration, thus improving calculation efficiency. At the same time, the BOM can be automatically updated according to changes in specific parameters, which helps to achieve synchronous automatic updates of performance parameter calculations, thereby comprehensively ensuring high accuracy and high efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0080] Further embodiments of the present invention also disclose an electronic device.

[0081] In some embodiments, the electronic device includes a vehicle parameter calculation system 100 as described in the above embodiments of the present invention.

[0082] In other embodiments, the electronic device includes a processor, a memory, and a vehicle parameter calculation program stored in the memory and executable on the processor, wherein the vehicle parameter calculation program, when executed by the processor, implements the vehicle parameter calculation method as described in the above embodiments of the present invention.

[0083] In specific embodiments, the electronic device may be, for example, a computing device or a vehicle.

[0084] It should be noted that the specific implementation of the electronic device in the embodiments of the present invention is similar to the specific implementation of the vehicle parameter calculation method described in the above embodiments of the present invention. For details, please refer to the description in the vehicle parameter calculation method section. In order to reduce redundancy, it will not be repeated here.

[0085] An electronic device according to an embodiment of the present invention is used to implement the vehicle parameter calculation method of the above embodiments of the present invention. First, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is obtained. Then, based on the BOM, performance parameters of the vehicle, including at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Simultaneously, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations. This comprehensively ensures high accuracy and efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0086] A further embodiment of the present invention discloses a computer-readable storage medium storing a vehicle parameter calculation program, which, when executed by a processor, implements the vehicle parameter calculation method as described in the above embodiments of the present invention.

[0087] It should be noted that the specific implementation of the computer-readable storage medium in the embodiments of the present invention is similar to the specific implementation described in the vehicle parameter calculation method of the above embodiments of the present invention. For details, please refer to the description in the vehicle parameter calculation method section. In order to reduce redundancy, it will not be repeated here.

[0088] According to an embodiment of the present invention, a computer-readable storage medium storing a vehicle parameter calculation program thereon, when executed by a processor, is used to implement the vehicle parameter calculation method of the above-described embodiment of the present invention. First, a bill of materials (BOM) for the vehicle, including attribute parameters of multiple vehicle components and configuration parameters of the vehicle, is obtained. Then, based on the BOM, performance parameters of the vehicle, including at least one of maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius, are calculated. By obtaining parameters through the BOM, the tedious manual searching and parameter verification work required for calculating performance parameters of each new vehicle model or configuration is avoided, thus improving calculation efficiency. Simultaneously, the BOM can be automatically updated according to changes in specific parameters, facilitating synchronous automatic updates of performance parameter calculations, thereby comprehensively ensuring high accuracy and efficiency when automatically calculating multiple performance parameters of the vehicle based on the BOM.

[0089] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0090] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for calculating vehicle parameters, characterized in that, Includes the following steps: Obtain the bill of materials for the vehicle, wherein the bill of materials includes attribute parameters of multiple components of the vehicle and configuration parameters of the vehicle; Based on the bill of materials, calculate the performance parameters of the vehicle, wherein the performance parameters include at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

2. The vehicle parameter calculation method according to claim 1, characterized in that, The configuration parameters include at least: total vehicle and cargo weight, front overhang of the vehicle, rear overhang of the vehicle, and rear width of the vehicle; The plurality of said components include at least an engine, a transmission, a rear axle, tires, a driveshaft, a steering axle, a frame, and a body; The engine's attribute parameters include at least: the engine's maximum speed and the engine's maximum torque; The attribute parameters of the transmission include at least: the highest gear ratio of the transmission, the first gear ratio of the transmission, and the transmission efficiency. The attribute parameters of the rear axle include at least: rear axle speed ratio and rear axle transmission efficiency; The attribute parameters of the tire include at least: tire outer diameter; The attribute parameters of the drive shaft include at least: drive shaft transmission efficiency; The attribute parameters of the steering axle include at least: wheel track, kingpin distance, maximum steering angle of the inner wheel, and maximum steering angle of the outer wheel; The attribute parameters of the frame include at least: wheelbase and saddle front distance; The attribute parameters of the vehicle body include at least: vehicle body length and vehicle body width.

3. The vehicle parameter calculation method according to claim 2, characterized in that, Calculating the maximum speed of the vehicle based on the bill of materials includes: Determine the drive wheel load radius based on the tire's outer diameter; The total reduction ratio is determined based on the highest gear ratio of the transmission and the rear axle ratio. The maximum vehicle speed is determined based on the engine's maximum speed, the drive wheel load radius, and the overall reduction ratio.

4. The vehicle parameter calculation method according to claim 2, characterized in that, Based on the bill of materials, the maximum gradeability of the vehicle is calculated, including: The overall transmission efficiency is determined based on the transmission efficiency of the gearbox, the transmission efficiency of the rear axle, and the transmission efficiency of the drive shaft. The maximum driving force is determined based on the engine's maximum torque, the gearbox's first gear ratio, the rear axle ratio, and the overall transmission efficiency. Determine the vehicle weight based on the total weight of the vehicle and cargo; The maximum slope angle is determined based on the vehicle's weight, rolling resistance, air resistance, and maximum driving force. The maximum gradient is determined based on the maximum slope angle.

5. The vehicle parameter calculation method according to claim 2, characterized in that, Based on the bill of materials, the minimum turning radius of the vehicle is calculated, including: Based on the wheel track and the kingpin distance, determine the first distance from the tire center plane to the kingpin center; The minimum inner wheel turning radius is determined based on the wheelbase, the maximum steering angle of the inner wheel, the kingpin distance, and the first distance. The minimum turning radius of the outer wheel is determined based on the wheelbase and the maximum steering angle of the outer wheel; The minimum turning radius is determined based on the minimum inner wheel turning radius and the minimum outer wheel turning radius.

6. The vehicle parameter calculation method according to claim 2, characterized in that, Based on the bill of materials, the front turning radius of the vehicle is calculated, including: Based on the vehicle body length and the front overhang of the vehicle, determine the second distance from the rear end of the vehicle body to the center line of the first axle; The front turning radius is determined based on the wheelbase, the front distance of the saddle, the vehicle width, and the second distance.

7. The vehicle parameter calculation method according to claim 2, characterized in that, Based on the bill of materials, the rear turning radius of the vehicle is calculated, including: The rear turning radius is determined based on the rear overhang of the vehicle, the front distance of the saddle, and the rear width of the vehicle.

8. A vehicle parameter calculation system, characterized in that, include: The acquisition module is used to acquire the bill of materials of the vehicle, wherein the bill of materials includes attribute parameters of multiple components of the vehicle and configuration parameters of the vehicle; The calculation module is used to calculate the performance parameters of the vehicle based on the bill of materials, wherein the performance parameters include at least one of the following: maximum speed, maximum gradeability, minimum turning radius, front turning radius, and rear turning radius.

9. An electronic device, characterized in that, include: The vehicle parameter calculation system as described in claim 8; or, A processor, a memory, and a vehicle parameter calculation program stored in the memory and executable on the processor, wherein the vehicle parameter calculation program, when executed by the processor, implements the vehicle parameter calculation method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a vehicle parameter calculation program, which, when executed by a processor, implements the vehicle parameter calculation method as described in any one of claims 1-7.

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