CN115935499A - Hybrid power coupling box load spectrum construction method and related equipment - Google Patents
Hybrid power coupling box load spectrum construction method and related equipment Download PDFInfo
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Abstract
The application relates to the technical field of load spectrums of hybrid power coupling boxes, in particular to a method for constructing load spectrums of hybrid power coupling boxes and related equipment. The hybrid power coupling box load spectrum construction method comprises the following steps: acquiring vehicle road spectrum information of a vehicle platform, and determining wheel side torque information of a vehicle according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information; determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel side torque information; and constructing a load spectrum of the power transmission path according to the torque distribution information and the vehicle speed information of the power transmission path. Load spectrums of different power transmission paths can be constructed, construction accuracy is improved, and pertinence is achieved. Only the road spectrum data of the existing vehicles of the vehicle platform needs to be collected, so that the development of the new models of vehicles of the vehicle platform is facilitated, the road spectrum collection is not needed after trial production, the product research and development are prevented from lagging, the research and development efficiency is improved, and the research and development cost is reduced.
Description
Technical Field
The application relates to the technical field of load spectrums of hybrid power coupling boxes, in particular to a method for constructing load spectrums of hybrid power coupling boxes and related equipment.
Background
The vehicle platform is a modular production mode, vehicles of different models from the same vehicle platform are correspondingly designed and improved on the basis of the same standard, the vehicle platform has the same structural elements, and the vehicle platform is greatly helpful for controlling the cost.
The load spectrum is important basic data in the structural design of the automobile speed reducer. In the early stage of product development, an electric automobile speed reducer usually has no directly-usable load spectrum for product design, CAE simulation calculation and bench test. The road load spectrum acquisition and editing are required, however, different vehicles on the same vehicle platform have differences, the road load spectrum acquisition is independently carried out on vehicles of various types, the workload is very huge, the test period is long, the test cost is high, the acquisition operation lags behind the product research and development, and the requirement of product early development cannot be met.
Therefore, there is a need for a hybrid dynamic coupling box load spectrum construction method and related apparatus to at least partially solve the problems in the prior art.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention provides a hybrid power coupling box load spectrum construction method.
The first aspect of the invention provides a hybrid power coupling box load spectrum construction device;
a third aspect of the invention provides an electronic device.
A fourth aspect of the invention provides a computer-readable storage medium.
In view of this, according to a first aspect of embodiments of the present application, a hybrid power coupling box load spectrum construction method is provided, including:
acquiring vehicle road spectrum information of a vehicle platform, and determining wheel side torque information of the vehicle according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information;
determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel torque information;
and constructing a load spectrum of the power transmission path according to the torque distribution information and the vehicle speed information of the power transmission path.
In one possible embodiment, the step of obtaining vehicle road spectrum information of a vehicle platform and determining wheel-side torque information of the vehicle according to the road spectrum information comprises:
acquiring weight information, road slope angle information and driving resistance information of the vehicle;
and determining the wheel side torque information according to the vehicle speed information, the weight information, the road slope angle information and the running resistance information.
In one possible embodiment, the driving resistance information includes:
a driving wind resistance, a ramp resistance, and an acceleration resistance, wherein the acceleration resistance is a product of the vehicle mass and an acceleration.
In one possible embodiment, the step of determining the operation mode of the vehicle and the torque distribution of the power transmission path of the operation mode based on the wheel-side torque information includes:
acquiring the required torque of the vehicle according to the maximum wheel-side torque information of the vehicle platform;
determining accelerator opening information of the vehicle according to the required torque of the vehicle;
determining the running mode of the vehicle and the power transmission path of the running mode according to the accelerator opening information and the vehicle speed information;
determining a torque relationship and a power relationship of associated parts of the power transmission path based on the power transmission path of the operating mode;
and determining the torque distribution condition of the power transmission path according to the torque relation and the power relation of the related parts of the power transmission path.
In one possible embodiment, the step of determining the operation mode of the vehicle based on the accelerator opening degree information and the vehicle speed information includes:
establishing a pattern recognition database, wherein the database is provided with a plurality of accelerator opening intervals and vehicle speed intervals corresponding to the operation modes;
and determining the accelerator opening interval corresponding to the accelerator opening information and determining the vehicle speed interval corresponding to the vehicle speed information so as to determine the running mode of the vehicle.
In one possible embodiment, the step of constructing a load spectrum of the power transmission path based on the torque distribution information and the vehicle speed information of the power transmission path includes:
determining the rotating speed information of the hybrid power coupling box according to the vehicle speed information;
and constructing a load spectrum of the power transmission path according to the rotating speed information and the wheel side torque information.
In a possible implementation manner, the hybrid power coupling box load spectrum construction method further includes:
and preprocessing the road spectrum information, and eliminating abnormal signals in the road spectrum, wherein the preprocessing operation comprises the following steps: gaussian filtering and reducing the sampling frequency.
According to a second aspect of the embodiments of the present application, there is provided a hybrid power coupling box load spectrum constructing apparatus, including:
the system comprises an acquisition unit, a processing unit and a control unit, wherein the acquisition unit is used for acquiring vehicle road spectrum information of a vehicle platform and determining wheel side torque information of the vehicle according to the road spectrum information, and the vehicle road spectrum information comprises vehicle speed information;
a determination unit, configured to determine an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel-side torque information;
and the construction unit is used for constructing a load spectrum of the power transmission path according to the torque distribution information and the vehicle speed information of the power transmission path.
According to a third aspect of embodiments of the present application, there is provided an electronic device, including: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of any one of the hybrid dynamic coupling box load spectrum constructing methods according to the above technical solutions when executing the computer program stored in the memory.
According to a fourth aspect of embodiments of the present application, there is provided a computer-readable storage medium having a computer program stored thereon, characterized in that: when being executed by a processor, the computer program realizes the hybrid dynamic coupling box load spectrum construction method in any one of the technical schemes.
Compared with the prior art, the invention at least comprises the following beneficial effects: according to the hybrid power coupling box load spectrum construction method, vehicle road spectrum information of a vehicle platform is obtained, and wheel-side torque information of a vehicle is determined according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information; determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel torque information; a load spectrum of the power transmission path is constructed by the torque distribution information and the vehicle speed information according to the power transmission path. The influence of the weight difference of different vehicles on the vehicle platform on the construction of the load spectrum of the hybrid power coupling box of the vehicle platform is eliminated. The hybrid power coupling box load spectrum of the vehicle platform is reversely deduced from the vehicle speed information, and the running mode of the vehicle, the power transmission path in the running mode and the torque distribution condition of the power transmission path can be determined according to the wheel torque information. Therefore, load spectrums of different power transmission paths are constructed, the construction accuracy is improved, the load spectrums meet various driving modes of the hybrid electric vehicle, and the hybrid electric vehicle is more targeted. The load spectrum of the hybrid power coupling box of the vehicle platform can be obtained only by collecting road spectrum data of existing vehicles of the vehicle platform, so that the development of new vehicles of the vehicle platform is facilitated, the road spectrum collection is not needed after trial production, the delay of product research and development is avoided, the workload is reduced, the research and development efficiency is improved, and the research and development cost is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the specification. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flowchart of a hybrid power coupling box load spectrum construction method provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a hybrid power coupling box load spectrum constructing apparatus according to an embodiment of the present application;
fig. 3 is a schematic structural frame of an electronic device according to an embodiment of the present disclosure.
Detailed Description
In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, according to a first aspect of the embodiments of the present application, a hybrid power coupling box load spectrum construction method is provided, including:
s110: acquiring vehicle road spectrum information of a vehicle platform, and determining wheel-side torque information of the vehicle according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information;
s120: determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel torque information;
s130: and constructing a load spectrum of the power transmission path based on the torque distribution information and the vehicle speed information of the power transmission path.
It can be understood that the hybrid power coupling box load spectrum construction method provided by the embodiment of the application determines wheel torque information of a vehicle according to road spectrum information by acquiring the vehicle road spectrum information of a vehicle platform, wherein the vehicle road spectrum information includes vehicle speed information; determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel torque information; a load spectrum of the power transmission path is constructed by the torque distribution information and the vehicle speed information according to the power transmission path. The influence of the weight difference of different vehicles on the vehicle platform on the construction of the load spectrum of the hybrid power coupling box of the vehicle platform is eliminated. The hybrid power coupling box load spectrum of the vehicle platform is reversely deduced from the vehicle speed information, and the running mode of the vehicle, the power transmission path in the running mode and the torque distribution condition of the power transmission path can be determined according to the wheel torque information. Therefore, load spectrums of different power transmission paths are constructed, the construction accuracy is improved, the load spectrums meet various driving modes of the hybrid electric vehicle, and the hybrid electric vehicle is more targeted. The load spectrum of the hybrid power coupling box of the vehicle platform can be obtained only by collecting road spectrum data of existing vehicles of the vehicle platform, so that the development of new vehicles of the vehicle platform is facilitated, the road spectrum collection is not needed after trial production, the delay of product research and development is avoided, the workload is reduced, the research and development efficiency is improved, and the research and development cost is reduced.
In some examples, the step of obtaining vehicle road spectrum information of a vehicle platform and determining wheel-side torque information of the vehicle according to the road spectrum information includes: acquiring weight information, road slope angle information and driving resistance information of the vehicle; and determining the wheel side torque information according to the vehicle speed information, the weight information, the road slope angle information and the running resistance information.
It is understood that the wheel-side torque information may be calculated from the weight information, road slope angle information, and running resistance information of the existing vehicle of the vehicle platform and vehicle speed information.
In some examples, the driving resistance information includes: a running wind resistance, a hill resistance, and an acceleration resistance, wherein the acceleration resistance is a product of the vehicle mass and an acceleration.
It can be understood that the wheel-side torque information can be calculated according to the weight information, the road slope angle information, the running resistance information and the vehicle speed information of the existing vehicle on the vehicle platform. Specifically, the wheel-side torque is determined for the vehicle driving force and the wheel diameter size, wherein the vehicle diameter size is a fixed quantity and the vehicle driving force expression is as follows:
F z ＝F f +F w +F i +F j
wherein, F z Is vehicle driving force; f f Road rolling resistance; f w Is wind resistance; f i Is the ramp resistance; f j For acceleration resistance.
The sum of the road resistance and the wind resistance can be fitted to a quadratic curve equation with the vehicle speed as a variable, and therefore, the expression of the vehicle driving force is converted into:
F z ＝(f 0 +f 1 v+f 2 v 2 )+Gsinα+mv′
wherein f is 0 ，f 1 ，f 2 The sum of the road rolling resistance and the wind resistance can be obtained according to the vehicle speed as the vehicle running resistance coefficient; alpha is a road slope angle, and Gsin alpha is ramp resistance; mv' is the acceleration resistance, the vehicle mass andthe product of the accelerations; m is the vehicle mass, v' is the acceleration, v is the vehicle speed, and G is the vehicle gravity. It will be appreciated that the acceleration v' is the integral of the vehicle speed v over time. Thus, under conditions of vehicle mass, hill hold, driveline output force may be expressed as a function of vehicle speed. And defining the maximum output capacity of the transmission system as Fmax, and selecting Fmax when Fz is larger than Fmax. The vehicle speed is adopted as a single variable, and feasibility of representing transmission system load, predicting a driving mode and vehicle running information is achieved. The influence of the weight difference of different vehicles on the vehicle platform and the output capacity difference of different transmission systems on the construction of the load spectrum of the hybrid power coupling box of the vehicle platform is eliminated. The hybrid power coupling box load spectrum of the vehicle platform is reversely deduced from the vehicle speed information.
In some examples, the step of determining the operation mode of the vehicle and the torque distribution of the power transmission path of the operation mode based on the wheel-side torque information includes: acquiring the required torque of the vehicle according to the maximum wheel-side torque information of the vehicle platform; determining accelerator opening information of the vehicle according to the required torque of the vehicle; determining an operation mode of the vehicle and a power transmission path of the operation mode according to the accelerator opening degree information and the vehicle speed information; determining a torque relationship and a power relationship of relevant parts of the power transmission path based on the power transmission path of the operation mode; and determining the torque distribution condition of the power transmission path according to the torque relationship and the power relationship of the related parts of the power transmission path.
It can be understood that the required torque of the vehicle can be obtained according to the maximum wheel-side torque information of the vehicle platform, and the accelerator opening information of the vehicle can be determined according to the required torque of the vehicle. Specifically, the relationship between the vehicle required torque and the vehicle speed and the accelerator pedal opening P can be expressed by formula (1), wherein the formula (1) is as follows:
wherein, T req Requesting a torque for the vehicle; t is max Maximum wheel-side torque of the vehicle, P is accelerator pedal opening, a 1 Is a unitary function of vehicle speed. Can be expressed by formula (2), formula (2) is:
a 1 ＝a 2 ln(v)+b 2
b 1 is a unitary function of vehicle speed. Can be expressed by formula (3), formula (3) is:
b 1 ＝a 3 v 2 +b 3 v+c
wherein v is the vehicle speed, a 2 、a 3 、b 2 、b 3 And c is a coefficient constant.
Substituting the formula (2) and the formula (3) into the formula (1) to obtain the accelerator pedal opening, wherein the accelerator pedal opening is a unitary function taking the vehicle speed as a variable and can be expressed by a formula (4), and the formula (4) is as follows:
the wheel edge required torque T is constant due to the diameter size of the wheel req With vehicle driving force F z Are linearly related, and F z For a univariate function of the vehicle speed v, it can be stated that the accelerator pedal opening can be expressed as a univariate function of the vehicle speed v. Namely, the vehicle speed is adopted as a single variable to represent the opening degree of an accelerator pedal.
It will be appreciated that the operating mode or gear determines the speed-torque load profile of each transmission path. Hybrid vehicles may employ a two parameter shift schedule, which may be expressed as, in particular:
M＝F m (v,p)
wherein M is the operating mode of the vehicle, F m (v, p) is a two parameter function of vehicle speed and pedal opening.
And since the pedal opening can be expressed as a univariate function of the vehicle speed v, i.e. the operating mode of the vehicle can employ a univariate function of the vehicle speed as a single variable.
Under the condition of determining the running mode of the vehicle, the power transmission path in the running mode and relevant parts of the power transmission path for doing work can be determined according to the design of the vehicle, so that the torque relation and the power relation of the relevant parts can be determined. Therefore, the torque distribution condition of the power transmission path is determined according to the torque relation and the power relation of the relevant parts.
In some examples, the step of determining the operation mode of the vehicle according to the accelerator opening degree information and the vehicle speed information includes: establishing a pattern recognition database, wherein the database is provided with a plurality of accelerator opening intervals and vehicle speed intervals corresponding to the operation modes; and determining the accelerator opening section corresponding to the accelerator opening information and the vehicle speed section corresponding to the vehicle speed information so as to determine the running mode of the vehicle.
It can be understood that a pattern recognition database can be created according to existing vehicle information of a vehicle platform, that is, the pattern recognition database stores accelerator opening intervals and vehicle speed intervals corresponding to different operation modes, after the accelerator opening information and the vehicle speed information are input, the pattern recognition database can determine the accelerator opening interval to which the accelerator opening belongs according to the input accelerator opening information, and can determine the vehicle speed interval to which the vehicle speed belongs according to the input vehicle speed information, so as to determine the current operation mode of the vehicle.
In some examples, the step of constructing a load spectrum of the power transmission path based on the torque distribution information and the vehicle speed information of the power transmission path includes: determining the rotating speed information of the hybrid power coupling box according to the vehicle speed information; and constructing a load spectrum of the power transmission path according to the rotation speed information and the wheel side torque information.
It can be understood that the vehicle speed can be converted into the rotating speed of the hybrid power coupling box according to the vehicle speed information, specifically, the rotating speed and the vehicle speed are in a linear relation, the power transmission path is determined according to the determined vehicle running mode, the running state of a motor and/or an engine of the power transmission path is determined, the vehicle speed is converted into the rotating speed of the motor and/or the engine, and a load spectrum corresponding to the power transmission path is constructed according to the rotating speed information and the wheel-side torque information, so that the method is more specific. And the influence of the weight difference of different vehicles on the vehicle platform and the output capacity difference of different transmission systems on the construction of the load spectrum of the hybrid power coupling box of the vehicle platform is eliminated. The hybrid power coupling box load spectrum of the vehicle platform is reversely deduced from the vehicle speed information. The load spectrum of the hybrid power coupling box of the vehicle platform can be obtained only by collecting road spectrum data of existing vehicles of the vehicle platform, so that development of new vehicles of the vehicle platform can be facilitated, road spectrum collection is not needed after trial production, lag behind product research and development is avoided, workload is reduced, research and development efficiency is improved, and research and development cost is reduced.
In some examples, the hybrid dynamic coupling box load spectrum construction method further includes: and preprocessing the road spectrum information to remove abnormal signals in the road spectrum, wherein the preprocessing operation comprises the following steps: gaussian filtering and reducing the sampling frequency.
It can be understood that, in order to ensure the accuracy of the speed coefficient conversion, the road spectrum of the initial vehicle type needs to be preprocessed to eliminate the influence abnormal signals such as drift and burrs contained in the road spectrum. Specifically, the trend drift is eliminated by using a gaussian filtering method, and the glitch is eliminated by reducing the sampling frequency. At the same time, the sampling frequency range is defined in order to avoid distortion of the torque trend due to excessively high filtered values. The sampling frequency is reduced to be within the range of 1 Hz to 10 Hz, so that abnormal points can be effectively removed and the distribution characteristics are kept.
As shown in fig. 3, a hybrid power coupling box load spectrum constructing apparatus according to a second aspect of the embodiment of the present application includes:
the vehicle road spectrum information acquiring unit 21 is configured to acquire vehicle road spectrum information of a vehicle platform, and determine wheel-side torque information of the vehicle according to the road spectrum information, where the vehicle road spectrum information includes vehicle speed information;
a determination unit 22 configured to determine an operation mode of the vehicle and a torque distribution of a power transmission path of the operation mode based on the wheel-side torque information;
a construction unit 23 configured to construct a load spectrum of the power transmission path based on the torque distribution information and the vehicle speed information of the power transmission path.
As shown in fig. 3, the embodiment of the present application further provides an electronic device 300, which includes a memory 310, a processor 320 and a computer program 311 stored in the memory 320 and executable on the processor, and when the computer program 311 is executed by the processor 320, the steps of any method for implementing the hybrid coupling box load spectrum construction described above are implemented.
Since the electronic device described in this embodiment is a device for implementing a device for determining a size of a cross beam of a generalized platform front seat in this embodiment, based on the method described in this embodiment, a person skilled in the art can understand a specific implementation manner of the electronic device of this embodiment and various modifications thereof, so that how to implement the method in this embodiment by the electronic device is not described in detail herein, and as long as the person skilled in the art implements the device used in this embodiment, the scope of protection of this application is included.
In a specific implementation, the computer program 311 may implement any of the embodiments corresponding to fig. 1 when executed by a processor.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Embodiments of the present application further provide a computer program product, where the computer program product includes computer software instructions, and when the computer software instructions are executed on a processing device, the processing device is caused to execute the flow of the hybrid power coupling box load spectrum building method in the embodiment corresponding to fig. 1.
The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). A computer-readable storage medium may be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A hybrid power coupling box load spectrum construction method is characterized by comprising the following steps:
acquiring vehicle road spectrum information of a vehicle platform, and determining wheel side torque information of the vehicle according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information;
determining an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel torque information;
and constructing a load spectrum of the power transmission path according to the torque distribution information and the vehicle speed information of the power transmission path.
2. The hybrid power coupling box load spectrum construction method of claim 1, wherein the step of obtaining vehicle road spectrum information of a vehicle platform, and determining wheel-side torque information of the vehicle according to the road spectrum information comprises:
acquiring weight information, road slope angle information and driving resistance information of the vehicle;
and determining the wheel side torque information according to the vehicle speed information, the weight information, the road slope angle information and the running resistance information.
3. The hybrid power coupling box load spectrum construction method of claim 2, wherein the running resistance information comprises:
a driving wind resistance, a ramp resistance, and an acceleration resistance, wherein the acceleration resistance is a product of the vehicle mass and an acceleration.
4. The hybrid power coupling box load spectrum construction method according to claim 2, wherein the step of determining the operation mode of the vehicle and the torque distribution of the power transmission path of the operation mode from the wheel-side torque information includes:
acquiring the required torque of the vehicle according to the maximum wheel-side torque information of the vehicle platform;
determining accelerator opening information of the vehicle according to the required torque of the vehicle;
determining the running mode of the vehicle and the power transmission path of the running mode according to the accelerator opening information and the vehicle speed information;
determining torque relationships and power relationships of relevant parts of the power transmission path based on the power transmission path of the operating mode;
and determining the torque distribution condition of the power transmission path according to the torque relation and the power relation of the related parts of the power transmission path.
5. The hybrid power coupling box load spectrum construction method of claim 4, wherein the step of determining the operation mode of the vehicle according to the accelerator opening information and the vehicle speed information comprises:
creating a pattern recognition database, wherein the database is provided with an accelerator opening interval and a vehicle speed interval corresponding to a plurality of operation modes;
and determining the accelerator opening interval corresponding to the accelerator opening information and determining the vehicle speed interval corresponding to the vehicle speed information so as to determine the running mode of the vehicle.
6. The hybrid coupling box load spectrum construction method according to claim 1, the step of constructing the load spectrum of the power transmission path from the torque distribution information and the vehicle speed information of the power transmission path comprising:
determining the rotating speed information of the hybrid power coupling box according to the vehicle speed information;
and constructing a load spectrum of the power transmission path according to the rotating speed information and the wheel side torque information.
7. The hybrid power coupling box load spectrum construction method of claim 1, further comprising:
and preprocessing the road spectrum information, and eliminating abnormal signals in the road spectrum, wherein the preprocessing operation comprises the following steps: gaussian filtering and reducing the sampling frequency.
8. A hybrid power coupling box load spectrum construction device is characterized by comprising the following components:
the vehicle road spectrum information acquisition unit is used for acquiring vehicle road spectrum information of a vehicle platform and determining wheel-side torque information of the vehicle according to the road spectrum information, wherein the vehicle road spectrum information comprises vehicle speed information;
a determination unit, configured to determine an operation mode of the vehicle and a torque distribution condition of a power transmission path of the operation mode according to the wheel-side torque information;
and the construction unit is used for constructing a load spectrum of the power transmission path according to the torque distribution information and the vehicle speed information of the power transmission path.
9. An electronic device, comprising: memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor is configured to carry out the steps of the hybrid power coupling box load spectrum construction method according to any one of claims 1 to 7 when executing the computer program stored in the memory.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program when executed by a processor implements a hybrid power coupling box load spectrum construction method as claimed in any one of claims 1 to 7.
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