New energy trolley design method based on cam structure and new energy trolley

Abstract

The invention is suitable for the technical field of vehicle design, and provides a new energy trolley design method based on a cam structure and a new energy trolley, and the method comprises the steps: firstly obtaining a reference environment parameter and a reference vehicle parameter set, and then accurately generating a target cam parameter according to the reference environment parameter and the reference vehicle parameter set, and finally, according to the target cam parameters and the vehicle structure parameter set information, effectively generating vehicle design parameter set information. According to the method, all core parameters of the new energy trolley can be designed with high reliability, the design reliability of the new energy trolley is remarkably improved, the solar electric vehicle which is stable in structure and accurate in operation can be manufactured, and the stability and performance of the solar electric vehicle in actual use can be enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle design, and in particular to a design method for a new energy vehicle based on a cam structure and a new energy vehicle. Background Art

[0002] As a new model of environmentally friendly transportation, new energy vehicles have received widespread attention and research.

[0003] At present, the design methods and structures of new energy vehicles on the market are not yet perfect, lacking logical support from underlying data and having low reliability, which needs further improvement. Summary of the invention

[0004] Based on this, the embodiment of the present application provides a new energy vehicle design method and a new energy vehicle based on a cam structure to solve the problem of low reliability in the prior art.

[0005] In a first aspect, an embodiment of the present application provides a design method for a new energy vehicle based on a cam structure, the method comprising:

[0006] Obtaining a baseline environmental parameter and a baseline vehicle parameter set;

[0007] generating target cam parameters according to the reference environmental parameters and the reference vehicle parameter set;

[0008] The vehicle design parameter set information is generated according to the target cam parameters and preset vehicle structure parameter set information.

[0009] Compared with the prior art, the beneficial effects are as follows: in the new energy vehicle design method based on the cam structure provided in the embodiment of the present application, the terminal device can first obtain the baseline environmental parameters and the baseline vehicle parameter set, and then accurately generate the target cam parameters according to the baseline environmental parameters and the baseline vehicle parameter set, and finally effectively generate the vehicle design parameter set information according to the target cam parameters and the vehicle structure parameter set information, thereby realizing high-reliability design of various core parameters of the new energy vehicle, improving the reliability of the new energy vehicle design, and to a certain extent solving the current low reliability problem.

[0010] In a second aspect, an embodiment of the present application provides a new energy vehicle, the new energy vehicle comprising:

[0011] Baseline environment parameter acquisition module: used to obtain baseline environment parameters and baseline vehicle parameter sets;

[0012] A target cam parameter generating module is used to generate target cam parameters according to the reference environmental parameters and the reference vehicle parameter set;

[0013] Vehicle design parameter set information generation module: used to generate vehicle design parameter set information according to the target cam parameters and preset vehicle structure parameter set information.

[0014] In a third aspect, an embodiment of the present application provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method of the first aspect described above when executing the computer program.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method of the first aspect described above are implemented.

[0016] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0018] Figure 1 It is a flow chart of a new energy vehicle design method provided in one embodiment of the present application;

[0019] Figure 2 It is a flow chart of step S200 in the new energy vehicle design method provided in one embodiment of the present application;

[0020] Figure 3 This is a module block diagram of a new energy vehicle provided in one embodiment of the present application;

[0021] Figure 4 It is a schematic diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0022] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0023] In the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0024] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0025] In order to illustrate the technical solution described in this application, a specific embodiment is provided below for illustration.

[0026] See also Figure 1 , Figure 1 It is a flow chart of the design method of a new energy vehicle based on a cam structure provided in the embodiment of the present application. In the present embodiment, the execution subject of the design method of a new energy vehicle is a terminal device. It is understandable that the types of terminal devices include but are not limited to mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (Ultra-Mobile Personal Computer, UMPC), netbooks, personal digital assistants (Personal Digital Assistant, PDA), etc. The embodiment of the present application does not impose any restrictions on the specific types of terminal devices.

[0027] See also Figure 1 The new energy vehicle design method provided in the embodiment of the present application includes but is not limited to the following steps:

[0028] In S100 , a reference environmental parameter and a reference vehicle parameter set are acquired.

[0029] Specifically, the terminal device can first obtain the benchmark environment parameters and the benchmark vehicle parameter set, wherein the benchmark environment parameters include the site area information, and the site area information is used to describe the total area of ​​the site; the benchmark vehicle parameter set includes the first relative distance information, the second relative distance information, the third relative distance information, the initial starting vector information, the fixed-axis transmission ratio information, the first spacing information, the cam thickness information, the cam reference diameter information, the curve radius information and the second spacing information, the first relative distance information is used to describe the distance of the driving wheel relative to the front wheel coordinates, the second relative distance information is used to describe the distance of the driven wheel relative to the front wheel coordinates, the third relative distance information is used to describe the distance of the sensor relative to the front wheel coordinates, the initial starting vector information includes the starting speed information and the starting direction information, the first spacing information is used to describe the spacing between the front wheel midplane and the moving plane of the steering propulsion structure, the curve radius information is used to describe the curve radius of the front wheel in contact with the cam when the front wheel is moving straight, and the second spacing information is used to describe the distance between the cam axis and the contact curve axis.

[0030] Without loss of generality, after the terminal device obtains the baseline environmental parameters and the baseline vehicle parameter set, the terminal device can use MATLAB software to set the CAM code, which can then automatically shoot and optimize the route trajectory of the new energy vehicle based on machine learning methods.

[0031] In S200 , target cam parameters are generated according to reference environmental parameters and a reference vehicle parameter set.

[0032] Specifically, after the terminal device acquires the reference environmental parameters and the reference vehicle parameter set, the terminal device can effectively generate target cam parameters according to the reference environmental parameters and the reference vehicle parameter set, thereby determining optimal parameters of the target cam.

[0033] In some possible implementations, to achieve the generation of target cam parameters, see Figure 2 Step S200 includes but is not limited to the following steps:

[0034] In S210 , based on MATLAB simulation software, a plurality of candidate cam parameter information is generated according to the reference environmental parameters and the reference vehicle parameter set.

[0035] Specifically, the terminal device can quickly generate a plurality of candidate cam parameter information based on the MATLAB simulation software according to the reference environmental parameters and the reference vehicle parameter set, wherein the candidate cam parameter information includes cam profile information and cam size information.

[0036] In S220 , candidate cam parameter information with the smallest steering error is determined as the target cam parameter.

[0037] Specifically, after the terminal device generates a plurality of candidate cam parameter information, the terminal device may determine the candidate cam parameter information with the smallest steering error as the target cam parameter, thereby determining the optimal parameter of the target cam.

[0038] In some possible implementations, the terminal device can also simulate and optimize the trajectory curve through Matlab software, and after multiple simulations and optimizations, the shape of the cam can be inferred. At the same time, the terminal device can add several additional punch points to the original trajectory to make the trajectory curve smoother and reduce the error caused by the cam. Furthermore, the terminal device can use Matlab software to perform multiple cam simulations to reduce the error caused by the computer's own calculations.

[0039] In S300 , vehicle design parameter set information is generated according to the target cam parameters and preset vehicle structure parameter set information.

[0040] Specifically, after the terminal device generates the target cam parameters, the terminal device can effectively generate the vehicle design parameter set information based on the target cam parameters and the preset vehicle structure parameter set information, thereby realizing high reliability in determining the various parameters of the new energy vehicle, wherein the vehicle structure parameter set information includes the vehicle transmission ratio information and the vehicle tooth number information, the vehicle transmission ratio information is used to describe the transmission ratio of the new energy vehicle, and the vehicle tooth number information is used to describe the vehicle tooth number of the new energy vehicle.

[0041] In some possible implementations, in order to generate vehicle design parameter set information, step S300 includes but is not limited to the following steps:

[0042] In S310 , vehicle design parameter set information is generated according to target cam parameters, vehicle transmission ratio information, and vehicle gear number information.

[0043] Specifically, after the terminal device generates the target cam parameters, the terminal device may comprehensively generate the vehicle design parameter set information according to the target cam parameters, the vehicle transmission ratio information, and the vehicle gear number information.

[0044] The implementation principle of the new energy vehicle design method based on the cam structure in the embodiment of the present application is: the terminal device can first obtain the baseline environmental parameters and the baseline vehicle parameter set, and then accurately generate the target cam parameters according to the baseline environmental parameters and the baseline vehicle parameter set, and finally effectively generate the vehicle design parameter set information according to the target cam parameters and the vehicle structure parameter set information, thereby realizing high-reliability design of various core parameters of the new energy vehicle and improving the reliability of the new energy vehicle design.

[0045] It should be noted that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0046] The embodiment of the present application also provides a new energy vehicle. For ease of description, only the parts related to the present application are shown, such as Figure 3 As shown, the new energy vehicle 30 includes:

[0047] A reference environment parameter acquisition module 31 is used to acquire reference environment parameters and reference vehicle parameter sets;

[0048] The target cam parameter generating module 32 is used to generate the target cam parameters according to the reference environment parameters and the reference vehicle parameter set;

[0049] The vehicle design parameter set information generating module 33 is used to generate the vehicle design parameter set information according to the target cam parameters and the preset vehicle structure parameter set information.

[0050] Optionally, the benchmark environment parameters include site area information, and the benchmark vehicle parameter set includes first relative distance information, second relative distance information, third relative distance information, initial starting vector information, fixed-axis transmission ratio information, first spacing information, cam thickness information, cam reference diameter information, curve radius information and second spacing information, wherein the first relative distance information is used to describe the distance of the driving wheel relative to the front wheel coordinates, the second relative distance information is used to describe the distance of the driven wheel relative to the front wheel coordinates, the third relative distance information is used to describe the distance of the sensor relative to the front wheel coordinates, the initial starting vector information includes starting speed information and starting direction information, the first spacing information is used to describe the spacing between the front wheel midplane and the moving plane of the steering propulsion structure, the curve radius information is used to describe the curve radius of the front wheel in contact with the cam when the front wheel is moving straight, and the second spacing information is used to describe the distance between the cam axis and the contact curve axis.

[0051] Optionally, the target cam parameter generating module 32 includes:

[0052] The alternative cam parameter information generation submodule is used to generate multiple alternative cam parameter information based on the MATLAB simulation software according to the reference environmental parameters and the reference vehicle parameter set, wherein the alternative cam parameter information includes cam profile information and cam size information;

[0053] Target cam parameter determination submodule: used to determine the candidate cam parameter information with the smallest steering error as the target cam parameter.

[0054] Optionally, the vehicle structure parameter set information includes vehicle transmission ratio information and vehicle gear number information; the above-mentioned vehicle design parameter set information generation module 33 includes:

[0055] Vehicle design parameter set information generation submodule: used to generate vehicle design parameter set information according to target cam parameters, vehicle transmission ratio information and vehicle gear number information.

[0056] Optionally, the new energy car 30 also includes a frame, a prime mover, a transmission mechanism and a steering mechanism, wherein the frame is made of 7075 aluminum to meet the requirements of high processing precision and high strength, and the frame can be divided into three parts: a lateral support surface of a solar electric drive vehicle, a bottom plate and a baffle of a solar electric drive vehicle, and these three parts can be connected by screws to facilitate installation and disassembly; the prime mover includes a solar panel generator, and the solar panel can convert solar energy into electrical energy to charge the lithium battery, and the lithium battery then powers the motor, and the motor is used to output power; the transmission mechanism includes a first gear set and a second gear set, and the first gear set includes a plurality of first gears, and the first gear is used to drive and connect the rear wheel shaft, the intermediate transmission shaft and the camshaft, and the second gear set includes a plurality of second gears, The second gear is used to transmit the connection between the motor shaft and the rear wheel shaft. For example, the small gear on the motor shaft meshes with the large gear on the rear wheel shaft to drive the rear wheel shaft to rotate. At the same time, the power is transmitted to the camshaft through a three-stage gear transmission to drive the cam to rotate, thereby realizing the left and right swing of the front wheel. In addition, the gear can be made of aluminum alloy to achieve the advantages of light weight, high strength and corrosion resistance. The steering mechanism includes a front wheel bracket, a front fork, a steering groove, a steering steel shaft and a height adjustment block. For example, the uneven shape of the cam drives the steering mechanism to move, thereby controlling the steering of the trolley. After the cam design is completed, the steering steel shaft can contact the cam structure, and the cam structure drives the steering steel shaft. The steering mechanism rotates around the front fork to drive the trolley to rotate, thereby realizing the steering of the trolley.

[0057] Optionally, the new energy vehicle 30 also includes a driving mechanism and a fine-tuning mechanism, wherein the driving mechanism includes a steering wheel, a driving wheel and a driven wheel, and the fine-tuning mechanism includes a spiral fine-tuning device, a steering groove and a lateral fine-tuning bearing, wherein the steering wheel can be the front wheel, the driven wheel can be the left wheel, and the driving wheel can be the right wheel. Exemplarily, the motor drives the inner pinion of the driving wheel to rotate, and transmits torque to the camshaft through the gear, driving the camshaft to rotate, so that the front wheel makes periodic swings to realize the steering of the vehicle; exemplarily, when it is necessary to adjust the distance of the vehicle offset from the planned trajectory, the designer can adjust the X-direction fine-tuning block and the Y-direction fine-tuning block by rotating the knob of the spiral fine-tuning device in the forward or reverse direction, so as to offset the errors caused by the part tolerance and the assembly clearance, thereby realizing the fine-tuning function and achieving the purpose of correcting the vehicle trajectory.

[0058] It should be noted that the information interaction, execution process and other contents between the above-mentioned modules are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0059] The present application also provides a terminal device, such as Figure 4 As shown, the terminal device 40 of this embodiment includes: a processor 41, a memory 42, and a computer program 43 stored in the memory 42 and executable on the processor 41. When the processor 41 executes the computer program 43, the steps in the above-mentioned new energy vehicle design method embodiment are implemented, such as Figure 1 Steps S100 to S300 shown; or, when the processor 41 executes the computer program 43, the functions of each module in the above device are realized, for example Figure 3 The functions of the modules 31 to 33 are shown.

[0060] The terminal device 40 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server, and the terminal device 40 includes but is not limited to a processor 41 and a memory 42. Those skilled in the art will appreciate that Figure 4 It is only an example of the terminal device 40 and does not constitute a limitation of the terminal device 40. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal device 40 may also include input and output devices, network access devices, buses, etc.

[0061] Among them, the processor 41 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.; the general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0062] The memory 42 may be an internal storage unit of the terminal device 40, such as a hard disk or memory of the terminal device 40, or the memory 42 may be an external storage device of the terminal device 40, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the terminal device 40; further, the memory 42 may also include both an internal storage unit and an external storage device of the terminal device 40, and the memory 42 may also store a computer program 43 and other programs and data required by the terminal device 40, and the memory 42 may also be used to temporarily store data that has been output or is to be output.

[0063] One embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the steps of each of the above method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc.; the computer-readable medium may include: any entity or device that can carry computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the methods, principles, and structures of the present application should be included in the protection scope of the present application.

Claims

1. A design method for a new energy vehicle based on a cam structure, characterized in that: The method comprises: Obtaining a baseline environmental parameter and a baseline vehicle parameter set; generating target cam parameters according to the reference environmental parameters and the reference vehicle parameter set; The vehicle design parameter set information is generated according to the target cam parameters and preset vehicle structure parameter set information.

2. The method according to claim 1, characterized in that: The reference environment parameters include site area information, and the reference vehicle parameter set includes first relative distance information, second relative distance information, third relative distance information, initial starting vector information, fixed-axis transmission ratio information, first spacing information, cam thickness information, cam reference diameter information, curve radius information and second spacing information, wherein the first relative distance information is used to describe the distance of the driving wheel relative to the front wheel coordinates, the second relative distance information is used to describe the distance of the driven wheel relative to the front wheel coordinates, the third relative distance information is used to describe the distance of the sensor relative to the front wheel coordinates, the initial starting vector information includes starting speed information and starting direction information, the first spacing information is used to describe the spacing between the front wheel midplane and the moving plane of the steering propulsion structure, the curve radius information is used to describe the curve radius of the front wheel in contact with the cam when the front wheel is moving straight, and the second spacing information is used to describe the distance between the cam axis and the contact curve axis.

3. The method according to claim 1, characterized in that The step of generating target cam parameters according to the reference environmental parameters and the reference vehicle parameter set includes: Based on MATLAB simulation software, a plurality of candidate cam parameter information is generated according to the reference environmental parameters and the reference vehicle parameter set, wherein the candidate cam parameter information includes cam profile information and cam size information; The candidate cam parameter information with the smallest steering error is determined as the target cam parameter.

4. The method according to claim 1, characterized in that The vehicle structure parameter set information includes vehicle transmission ratio information and vehicle gear number information; the vehicle design parameter set information is generated according to the target cam parameter and the preset vehicle structure parameter set information, including: Vehicle design parameter set information is generated according to the target cam parameters, the vehicle transmission ratio information and the vehicle gear number information.

5. A new energy car, characterized in that: The new energy vehicle comprises: Baseline environment parameter acquisition module: used to obtain baseline environment parameters and baseline vehicle parameter sets; A target cam parameter generating module is used to generate target cam parameters according to the reference environmental parameters and the reference vehicle parameter set; Vehicle design parameter set information generation module: used to generate vehicle design parameter set information according to the target cam parameters and preset vehicle structure parameter set information.

6. The new energy vehicle according to claim 5, characterized in that: The new energy vehicle also includes a frame, a prime mover, a transmission mechanism and a steering mechanism, wherein the frame is made of 7075 aluminum, the prime mover includes a solar panel generator, the transmission mechanism includes a first gear set and a second gear set, the first gear set includes a plurality of first gears, the first gear is used to drive and connect the rear wheel shaft, the intermediate transmission shaft and the camshaft, the second gear set includes a plurality of second gears, the second gear is used to drive and connect the motor shaft and the rear wheel shaft, and the steering mechanism includes a front wheel bracket, a front fork, a steering groove, a steering steel shaft and a height adjustment block.

7. The new energy vehicle according to claim 6, characterized in that: The new energy vehicle also includes a driving mechanism and a fine-tuning mechanism, wherein the driving mechanism includes a steering wheel, a driving wheel and a driven wheel, and the fine-tuning mechanism includes a spiral fine-tuner, a steering groove and a lateral fine-tuning bearing.

8. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 4 are implemented.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

Images