CN114722499A - Vehicle vibration evaluation method, device, equipment and storage medium - Google Patents
Vehicle vibration evaluation method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of vehicle testing, and discloses a vehicle vibration evaluation method, a device, equipment and a storage medium. The method comprises the steps of obtaining a structural node corresponding to a vehicle to be tested, constructing a geometric model corresponding to the vehicle to be tested according to the structural node, determining a point to be tested of the vehicle to be tested according to the geometric model, controlling the vehicle to be tested to operate based on a test strategy corresponding to the vehicle to be tested, collecting operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested, performing modal analysis on the operation information to be analyzed, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested; according to the invention, the geometric model corresponding to the vehicle to be tested is constructed according to the structural nodes of the vehicle to be tested, so that the point to be tested of the vehicle to be tested is accurately determined according to the geometric model, the accuracy of the operation information acquisition of the vehicle to be tested is improved, the vibration evaluation efficiency is improved, and the vibration evaluation result is more accurate.
Description
Technical Field
The invention relates to the technical field of vehicle testing, in particular to a vehicle vibration evaluation method, device, equipment and storage medium.
Background
Along with the improvement that science and technology development brought for people's standard of living, when vehicle performance promoted, comfort and security when people also took the vehicle of more concern. The vehicle vibration is an important index for evaluating the comfort, the vibration generated by the vehicle not only affects the riding experience of passengers, but also affects the driving experience of drivers, and the vibration seriously affects the driving smoothness and the vibration comfort of the vehicle, so that the factor for determining the vehicle vibration through testing and evaluation is very important. The existing vehicle vibration evaluation method cannot accurately set vibration information acquisition points, so that the vibration information acquired in the vehicle running process is inaccurate, and the evaluation error of vehicle vibration is large.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a vehicle vibration evaluation method, a vehicle vibration evaluation device, vehicle vibration evaluation equipment and a storage medium, and aims to solve the technical problem that the evaluation error of vehicle vibration is large due to the fact that a vibration information acquisition point cannot be accurately set in the prior art.
To achieve the above object, the present invention provides a vehicle vibration evaluation method, including the steps of:
acquiring a structural node corresponding to a vehicle to be tested;
constructing a geometric model corresponding to the vehicle to be tested according to the structural nodes, and determining a point to be tested of the vehicle to be tested according to the geometric model;
controlling the vehicle to be tested to operate based on a test strategy corresponding to the vehicle to be tested, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested;
and performing modal analysis on the running information to be analyzed, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be analyzed.
Optionally, the obtaining of the structural node corresponding to the vehicle to be tested includes:
acquiring the structural characteristics of a vehicle to be tested;
determining structural rigidity points and component attachment points of the vehicle to be tested according to the structural characteristics;
and determining a structural node corresponding to the vehicle to be tested according to the structural rigidity point and the component attachment point.
Optionally, the constructing a geometric model corresponding to the vehicle to be tested according to the structure node, and determining the point to be tested of the vehicle to be tested according to the geometric model includes:
determining coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics;
determining the position information of the structural node according to the coordinate unit information;
and constructing a geometric model corresponding to the vehicle to be tested based on the position information, and determining the point to be tested of the vehicle to be tested according to the geometric model.
Optionally, the constructing a geometric model corresponding to the vehicle to be measured based on the position information, and determining a point to be measured of the vehicle to be measured according to the geometric model includes:
constructing a geometric model corresponding to the vehicle to be tested based on the position information;
determining direction information corresponding to the structural node according to the coordinate unit information;
and determining the direction to be measured corresponding to the vehicle to be measured according to the direction information, and determining the point to be measured of the vehicle to be measured according to the geometric model and the direction to be measured.
Optionally, the controlling the vehicle to be tested to operate based on the test strategy corresponding to the vehicle to be tested, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested includes:
acquiring a current test item and vehicle information corresponding to the vehicle to be tested, wherein the current test item comprises a starting test item, an acceleration test item and a constant speed test item;
determining a test strategy corresponding to the vehicle to be tested according to the vehicle information and the current test item;
and controlling the vehicle to be tested to operate based on the test strategy, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested.
Optionally, the controlling the vehicle to be tested to operate based on the test strategy and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested includes:
determining an acquisition range according to the vehicle information;
determining an acquisition strategy according to the acquisition range and the test strategy;
and controlling the running of the vehicle to be tested based on the test strategy, and acquiring running information to be analyzed of the point to be tested in the running process of the vehicle to be tested according to the acquisition strategy.
Optionally, the performing modal analysis on the operation information to be analyzed and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested includes:
screening the running information to be analyzed according to preset screening conditions to obtain initial running information;
screening the initial operation information according to a preset steady state condition to obtain steady state operation information and target operation information;
and performing modal analysis on the steady-state operation information and the target operation information, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
In order to achieve the above object, the present invention also provides a vehicle vibration evaluation device including:
the structure acquisition module is used for acquiring a structure node corresponding to the vehicle to be detected;
the model construction module is used for constructing a geometric model corresponding to the vehicle to be tested according to the structure nodes and determining a point to be tested of the vehicle to be tested according to the geometric model;
the information acquisition module is used for controlling the running of the vehicle to be tested based on the test strategy corresponding to the vehicle to be tested and acquiring the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested;
and the vibration evaluation module is used for carrying out modal analysis on the running information to be analyzed and carrying out vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
Further, to achieve the above object, the present invention also proposes a vehicle vibration evaluation apparatus including: a memory, a processor and a vehicle vibration evaluation program stored on the memory and executable on the processor, the vehicle vibration evaluation program being configured to implement the steps of the vehicle vibration evaluation method as described above.
Furthermore, to achieve the above object, the present invention also proposes a storage medium having stored thereon a vehicle vibration evaluation program which, when executed by a processor, implements the steps of the vehicle vibration evaluation method as described above.
According to the method, a structural node corresponding to a vehicle to be tested is obtained, a geometric model corresponding to the vehicle to be tested is constructed according to the structural node, a point to be tested of the vehicle to be tested is determined according to the geometric model, the vehicle to be tested is controlled to operate based on a test strategy corresponding to the vehicle to be tested, operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested is collected, modal analysis is conducted on the operation information to be analyzed, and a modal analysis result is subjected to vibration evaluation to obtain a vibration evaluation result of the vehicle to be tested; according to the method, the geometric model corresponding to the vehicle to be tested is constructed according to the structural nodes of the vehicle to be tested, so that the point to be tested of the vehicle to be tested is accurately determined according to the geometric model, then the vehicle to be tested is controlled to run based on the test strategy corresponding to the vehicle to be tested, the running process of the vehicle is simulated, the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested is accurately collected, the collected running information to be analyzed is subjected to modal analysis, the vibration information in the running process of the vehicle is effectively analyzed, then the modal analysis result is subjected to vibration evaluation, the vibration evaluation result of the vehicle to be tested is obtained, the accuracy of collecting the running information of the vehicle to be tested is improved, the vibration evaluation efficiency is improved, and the vibration evaluation result is more accurate.
Drawings
Fig. 1 is a schematic configuration diagram of a vehicle vibration evaluation apparatus of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a vehicle vibration evaluation method of the invention;
FIG. 3 is a schematic flow chart of a second embodiment of the vehicle vibration evaluation method of the invention;
fig. 4 is a block diagram showing the configuration of the first embodiment of the vehicle vibration evaluation device of the present invention.
The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle vibration evaluation device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the vehicle vibration evaluation apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to implement connection communication among these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the vehicle vibration evaluation apparatus, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is one type of storage medium, may include therein an operating system, a network communication module, a user interface module, and a vehicle vibration evaluation program.
In the vehicle vibration evaluation apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the vehicle vibration evaluation apparatus of the present invention may be provided in the vehicle vibration evaluation apparatus which calls the vehicle vibration evaluation program stored in the memory 1005 through the processor 1001 and executes the vehicle vibration evaluation method provided by the embodiment of the present invention.
An embodiment of the invention provides a vehicle vibration evaluation method, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the vehicle vibration evaluation method according to the invention.
In this embodiment, the vehicle vibration evaluation method includes the steps of:
step S10: and acquiring the structural node corresponding to the vehicle to be tested.
It should be understood that the execution subject of the method of the embodiment may be a vehicle vibration evaluation device, such as a computer, etc., having functions of data processing, network communication, and program execution, or other devices or devices capable of implementing the same or similar functions, and is described here by taking the vehicle vibration evaluation device (hereinafter referred to as a vibration evaluation device) as an example.
It should be noted that the vehicle under test may be a vehicle that needs to be subjected to a vibration test and a vibration evaluation. The structural node may be a position point on the structure of the vehicle to be tested, for example, the structural node may be a position point with higher structural rigidity on the vehicle to be tested, or a connection position point of a main structural component on the vehicle to be tested, or the like. The positions and the number of the structural nodes can be uniformly distributed, so that the problem of space aliasing during vibration information acquisition is effectively avoided.
In a specific implementation, the vibration evaluation device determines a structural node corresponding to the vehicle to be tested according to structural characteristics of the vehicle to be tested, where the structural characteristics may include structural rigidity information, structural component connection information, structural spatial distribution information, and the like of the vehicle to be tested.
Further, in order to accurately identify the structural node corresponding to the vehicle to be tested, the step S10 may include:
acquiring the structural characteristics of a vehicle to be tested;
determining structural rigidity points and component attachment points of the vehicle to be tested according to the structural characteristics;
and determining a structural node corresponding to the vehicle to be tested according to the structural rigidity point and the component attachment point.
It should be noted that the structural characteristic may be spatial characteristic information of the geometric structure of the vehicle to be tested, for example, the structural characteristic may include part distribution information, structural connection information, geometric spatial information, and the like of the vehicle to be tested. The structural rigidity point may be a point of greater rigidity in the geometry of the vehicle under test, and the component attachment point may be a component-to-component connection point in the geometry of the vehicle under test.
Step S20: and constructing a geometric model corresponding to the vehicle to be tested according to the structural nodes, and determining the point to be tested of the vehicle to be tested according to the geometric model.
The geometric model may be a structural model of a geometric form corresponding to the vehicle to be measured, for example, the geometric model may be a three-dimensional geometric model corresponding to the vehicle to be measured. The point to be measured can be an information acquisition point arranged on the vehicle to be measured, and the vibration evaluation equipment can acquire vibration information of the point to be measured in the running process of the vehicle to be measured so as to determine the running information of the vehicle to be measured. The vibration evaluation equipment can acquire vibration information of a point to be measured through an externally connected or internally integrated sensor.
It should be understood that, in order to accurately set the points to be measured so as to effectively acquire the operation information of the vehicle to be measured, the vibration evaluation device of the embodiment accurately reflects the geometric form of the vehicle to be measured by marking the structural nodes and then connecting the structural nodes, so as to accurately construct the geometric model of the vehicle to be measured; and carrying out vibration analysis on the structure of the vehicle to be tested based on the geometric model, determining the position of the vehicle to be tested with serious vibration according to the vibration analysis result, and determining the point to be tested of the vehicle to be tested according to the position with serious vibration.
It should be noted that, when the vehicle to be measured has more than one measuring direction, the vibration evaluation device sets a reference point according to the measuring direction, and determines the point to be measured of the vehicle to be measured according to the reference point and the geometric model.
Step S30: and controlling the running of the vehicle to be tested based on the test strategy corresponding to the vehicle to be tested, and acquiring the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested.
It should be noted that the test strategy may be a strategy for controlling the vehicle to be tested to perform a test, for example, the test strategy may include an operation strategy of the vehicle to be tested, where the operation strategy may be a strategy for controlling the vehicle to be tested to perform a simulation operation, and the operation strategy may include strategies such as an operation duration, an operation gear, an operation speed, and an operation condition of the vehicle to be tested.
The operation information to be analyzed may be operation information of a vehicle to be detected during operation of the vehicle to be detected, for example, the operation information to be analyzed may include vehicle speed information, gear information, engine speed information, throttle opening information, driving motor speed information, vibration frequency information, and the like during operation of the vehicle to be detected.
It should be understood that, in order to test the vibration state of the vehicle to be tested in the actual operation process, the vibration evaluation device of the embodiment controls the vehicle to be tested to operate based on the test strategy corresponding to the vehicle to be tested, so as to simulate the operation states of the vehicle to be tested under different operation conditions, and then collects the operation information to be analyzed in the operation process of the vehicle to be tested, thereby realizing the test of the vibration state of the vehicle to be tested under different operation conditions, and effectively reducing the test error, wherein the operation condition may be the operation condition of the vehicle under different operation conditions.
In the specific implementation, the vibration evaluation equipment determines a test strategy corresponding to a vehicle to be tested according to vehicle information of the vehicle to be tested, wherein different vehicle information and different test modes of the vehicle to be tested are different, the vehicle to be tested is controlled to operate based on the test strategy corresponding to the vehicle to be tested, and operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested is collected.
For example, when the vehicle to be tested is a manual gear vehicle and the running condition is a starting acceleration condition, the test strategy may be that the clutch pedal is stepped on, the transmission is set to 1 gear, the clutch pedal is slowly released, the accelerator pedal is stepped on to 25% of accelerator opening, the vehicle starts to run, the accelerator pedal is matched with the clutch pedal when the engine speed reaches 2000r/min, the transmission is set to 2 gear, the accelerator pedal is stepped on to 25% of accelerator opening, the gear shift operation (the engine speed shifts at 2000r/min, and the accelerator pedal is stepped on to 25% of accelerator opening after the gear shift) is performed until the vehicle speed reaches 50km/h, and then the test is finished, wherein the whole gear shift process should be as smooth as possible.
When the vehicle to be tested is a manual gear vehicle and the running working condition is a constant speed working condition, selecting 3 gears, 4 gears, 5 gears or other gears for testing to stabilize the vehicle speed at 60km/h, 120km/h or other vehicle speeds, wherein the vehicle speed does not float more than 1 km/h.
And when the vehicle to be tested is an automatic transmission vehicle and the running working condition is a constant speed working condition, selecting the D gear for testing, so that the vehicle speed is stabilized at 60km/h, 120km/h or other vehicle speeds, wherein the vehicle speed floating does not exceed 1 km/h.
When the vehicle to be tested is an automatic transmission vehicle and the running working condition is a starting acceleration working condition, the test starts from the step-on of a brake pedal, meanwhile, the transmission is set to be in a D gear, the brake pedal is released, the vehicle is driven to 50km/h at a certain accelerator opening degree, the test is finished, and the whole acceleration process is maintained at about 8 s.
When the vehicle to be tested is a manual gear vehicle and the operation working condition is a rapid acceleration working condition, selecting 3 gears, 4 gears, 5 gears or other gears for testing, fully opening the accelerator as soon as possible until the rotating speed of the engine reaches the specified rated rotating speed, and then finishing the test.
And when the vehicle to be tested is an automatic transmission vehicle and the operation working condition is a rapid acceleration working condition, selecting the D gear for testing, starting from the lowest stable vehicle speed of the D gear, fully opening the accelerator as quickly as possible until the vehicle speed reaches 120km/h, and then finishing the test.
When the vehicle to be tested is a new energy vehicle and the running working condition is a starting acceleration working condition, starting acceleration test is started by stepping on a brake pedal, meanwhile, a speed changer is set to be a D gear, the brake pedal is released, the vehicle is driven to 50km/h by a certain accelerator opening degree, the test is finished, and the whole acceleration process is kept at about 8 s.
When the vehicle to be tested is a new energy vehicle and the running working condition is a constant speed working condition, the constant speed is tested by selecting a D gear, so that the vehicle speed is stabilized at 60km/h and 120km/h or the concerned vehicle speed (the vertical floating does not exceed 1 km/h).
When the vehicle to be tested is a new energy vehicle and the operation working condition is a rapid acceleration working condition, a D gear is selected for rapid acceleration to perform a test, the test is started from the lowest stable speed of the D gear, the accelerator pedal is stepped to the position with the maximum displacement as fast as possible until the speed of the vehicle reaches 120km/h, and then the test is finished.
Before the vibration evaluation equipment collects the operation information to be analyzed of the vehicle to be tested, the collection range may be adjusted according to the vibration signal of the vehicle to be tested, for example, the collection range may be adjusted to 2/3 of the vibration signal or to 2/3 of the vibration signal. When the vibration evaluation equipment collects the running information to be analyzed of the vehicle to be tested, the sampling rate of the vibration evaluation equipment can be set according to the analysis bandwidth, and the analysis bandwidth is higher than the vibration frequency of the vehicle to be tested.
When the running working condition of the vehicle to be tested is a constant speed working condition, the vibration evaluation equipment can acquire information in a time tracking acquisition mode, and the recording time of the information acquisition can be 15s, 20s or other time.
When the vehicle to be measured is a manual gear vehicle and the operation working condition is a rapid acceleration working condition, the vibration evaluation equipment can acquire information through an acquisition mode of rotating speed tracking.
When the vehicle to be measured is an automatic transmission vehicle and the operation condition is a rapid acceleration condition, the vibration evaluation equipment can acquire information through an acquisition mode of vehicle speed tracking.
When the running working condition of the vehicle to be tested is a starting acceleration working condition, the vibration evaluation equipment can acquire information in an acquisition mode of vehicle speed tracking.
It should be understood that, in order to ensure that the collected operation information is accurate and the operation information is incorrect, the vibration evaluation device may repeatedly test more than once when collecting the operation information to be analyzed of the point to be tested during the operation of the vehicle to be tested.
For example, when the running working condition of the vehicle to be measured is a constant speed working condition, repeatedly acquiring multiple groups of data until 3 or more than 3 groups of data with total value change not exceeding 2dB appear; when the running working condition of the vehicle to be measured is a non-constant speed working condition, repeatedly acquiring multiple groups of data until 3 groups of data meet the requirement that the difference of OA values of the data of each vibration measuring point under the rotating speed or the vehicle speed of each engine (driving motor) is not more than 2 dB.
Further, in order to simulate the actual running state of the vehicle to be tested, step S30 may include:
acquiring a current test item and vehicle information corresponding to the vehicle to be tested, wherein the current test item comprises a starting test item, an acceleration test item and a constant speed test item;
determining a test strategy corresponding to the vehicle to be tested according to the vehicle information and the current test item;
and controlling the vehicle to be tested to operate based on the test strategy, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested.
It should be noted that the vehicle information may be vehicle type information of the vehicle to be tested, and the vehicle information may include a transmission type or an energy type of the vehicle to be tested, for example, the vehicle to be tested may be a manual transmission vehicle, an automatic transmission vehicle, or an electric energy vehicle. The current test item can be an item required by the vehicle to be tested to carry out vibration test, and the current test item comprises a starting test item, an acceleration test item and a constant speed test item.
It should be understood that the vibration evaluation device determines a test strategy corresponding to a vehicle to be tested according to vehicle information of the vehicle to be tested, wherein different vehicle information and different test modes of the vehicle to be tested are different, controls the vehicle to be tested to operate based on the test strategy corresponding to the vehicle to be tested, and collects operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested.
Further, in order to effectively acquire information in the vehicle operation process, the controlling the vehicle to be tested to operate based on the test strategy and acquiring the operation information to be analyzed of the point to be tested in the vehicle operation process may include:
determining an acquisition range according to the vehicle information;
determining an acquisition strategy according to the acquisition range and the test strategy;
and controlling the running of the vehicle to be tested based on the test strategy, and acquiring running information to be analyzed of the point to be tested in the running process of the vehicle to be tested according to the acquisition strategy.
Before the vibration evaluation equipment collects the operation information to be analyzed of the vehicle to be tested, the collection range may be adjusted according to the vibration signal of the vehicle to be tested, for example, the collection range may be adjusted to 2/3 of the vibration signal or to 2/3 of the vibration signal. When the vibration evaluation equipment collects the running information to be analyzed of the vehicle to be tested, the sampling rate of the vibration evaluation equipment can be set according to the analysis bandwidth, and the analysis bandwidth is higher than the vibration frequency of the vehicle to be tested.
Step S40: and performing modal analysis on the operation information to be analyzed, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be analyzed.
It should be noted that the modal analysis result may include information such as a modal frequency, a modal damping, and a modal shape of the corresponding combination structure of the vehicle to be tested.
It should be understood that the vibration evaluation device may select cross-power spectral data to participate in the analysis of the working mode, and the identification of the working mode parameters is performed by using a frequency domain method or a time domain method. The analysis frequency comprises the frequency concerned by the tested structure, a proper modal calculation number is selected, a modal pole is selected according to the steady state diagram, the modal residue number and the mode shape of each order are calculated, and for the concerned modal frequency, the analysis bandwidth can be reduced at the frequency to further carry out modal parameter identification.
And verifying the modal analysis result by using methods such as comparing the synthesized cross-power spectrum with the actually measured cross-power spectrum and the like by using the mode shape animation and the MAC confidence criterion, wherein the MAC represents the correlation between two columns in the modal parameter table, the autocorrelation coefficient is 1, and the non-autocorrelation coefficient is below 0.4.
Further, in order to effectively evaluate the vibration condition of the vehicle under test, step S40 may include:
screening the running information to be analyzed according to preset screening conditions to obtain initial running information;
screening the initial operation information according to a preset steady state condition to obtain steady state operation information and target operation information;
and performing modal analysis on the steady-state operation information and the target operation information, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
It should be noted that the operation information to be analyzed may be original operation information acquired by the vibration evaluation device, and the preset screening condition may be a condition preset for screening the unqualified information.
It should be understood that, in order to eliminate the operation information which does not meet the evaluation condition in the operation information to be analyzed, so as to reduce errors and obtain more accurate information, the vibration evaluation device screens the operation information to be analyzed according to a preset screening condition to ensure that unqualified information is eliminated, so as to obtain initial operation information, screens the initial operation information according to a preset steady state condition to obtain steady state operation information and target operation information, performs modal analysis on the steady state operation information and the target operation information, and performs vibration evaluation on the modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
In the embodiment, a structural node corresponding to a vehicle to be tested is obtained, a geometric model corresponding to the vehicle to be tested is constructed according to the structural node, a point to be tested of the vehicle to be tested is determined according to the geometric model, the vehicle to be tested is controlled to operate based on a test strategy corresponding to the vehicle to be tested, operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested is collected, modal analysis is performed on the operation information to be analyzed, and a modal analysis result is subjected to vibration evaluation to obtain a vibration evaluation result of the vehicle to be tested; according to the method, the geometric model corresponding to the vehicle to be tested is constructed according to the structural nodes of the vehicle to be tested, so that the point to be tested of the vehicle to be tested is accurately determined according to the geometric model, then the vehicle to be tested is controlled to run based on the test strategy corresponding to the vehicle to be tested, the running process of the vehicle is simulated, the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested is accurately collected, the collected running information to be analyzed is subjected to modal analysis, the vibration information in the running process of the vehicle is effectively analyzed, then the modal analysis result is subjected to vibration evaluation, the vibration evaluation result of the vehicle to be tested is obtained, the accuracy of collecting the running information of the vehicle to be tested is improved, the vibration evaluation efficiency is improved, and the vibration evaluation result is more accurate.
Referring to fig. 3, fig. 3 is a flowchart illustrating a vehicle vibration evaluation method according to a second embodiment of the present invention.
Based on the foregoing first embodiment, in this embodiment, the step S20 includes:
step S201: and determining coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics.
It should be noted that the coordinate unit information may be coordinate system information and unit size information corresponding to the vehicle to be measured, where the coordinate system information may be related information of a coordinate system where a geometric model of the vehicle to be measured is constructed, and the unit size information may be related information of unit size calibration used for constructing the geometric model of the vehicle to be measured, where the coordinate unit information set for different structural characteristics is different.
It should be understood that, in order to accurately construct the geometric model corresponding to the vehicle to be tested, the vibration evaluation apparatus of the present embodiment may determine the coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics of the vehicle to be tested, so as to construct the geometric model based on the coordinate system information and the unit size information in the coordinate unit information.
Step S202: and determining the position information of the structural node according to the coordinate unit information.
The position information may be position information of the structure node in a coordinate system in the coordinate unit information.
Step S203: and constructing a geometric model corresponding to the vehicle to be tested based on the position information, and determining the point to be tested of the vehicle to be tested according to the geometric model.
It should be understood that, in order to more accurately characterize the vibration mode of the vehicle to be measured in the operation process, the vibration evaluation device of the embodiment performs node connection on the structural nodes based on the position information of the structural nodes to obtain the geometric model corresponding to the vehicle to be measured, and then determines, according to the geometric model, that the points where the vehicle to be measured vibrates significantly are not to be measured.
Further, in order to ensure that the information collected from each direction of the point to be measured of the vehicle to be measured is accurate, the step S203 may include:
constructing a geometric model corresponding to the vehicle to be tested based on the position information;
determining direction information corresponding to the structural node according to the coordinate unit information;
and determining the direction to be measured corresponding to the vehicle to be measured according to the direction information, and determining the point to be measured of the vehicle to be measured according to the geometric model and the direction to be measured.
The direction information may be direction information of the structural node in a coordinate system in the coordinate unit information, and the direction to be measured may be a measurement or collection direction corresponding to each structural node in the vehicle to be measured.
The embodiment determines the coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics; determining the position information of the structural node according to the coordinate unit information; constructing a geometric model corresponding to the vehicle to be tested based on the position information, and determining a point to be tested of the vehicle to be tested according to the geometric model; according to the invention, the position information of the structural nodes is accurately determined according to the coordinate unit information corresponding to the vehicle to be measured, the node connection is carried out based on the position information of the structural nodes, so that the geometric model corresponding to the vehicle to be measured is constructed, and the point to be measured of the vehicle to be measured is determined according to the combined model, so that the accurate calibration of the point to be measured is realized, and the accuracy of information acquisition is improved.
Furthermore, an embodiment of the present invention also proposes a storage medium having a vehicle vibration evaluation program stored thereon, which when executed by a processor implements the steps of the vehicle vibration evaluation method as described above.
Since the storage medium adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are provided, and are not described in detail herein.
Referring to fig. 4, fig. 4 is a block diagram showing the configuration of the first embodiment of the vehicle vibration evaluation apparatus of the present invention.
As shown in fig. 4, a vehicle vibration evaluation device according to an embodiment of the present invention includes:
the structure acquiring module 10 is used for acquiring a structure node corresponding to a vehicle to be detected;
the model building module 20 is configured to build a geometric model corresponding to the vehicle to be tested according to the structure node, and determine a point to be tested of the vehicle to be tested according to the geometric model;
the information acquisition module 30 is configured to control the vehicle to be tested to operate based on a test strategy corresponding to the vehicle to be tested, and acquire to-be-analyzed operation information of the point to be tested in an operation process of the vehicle to be tested;
and the vibration evaluation module 40 is used for performing modal analysis on the operation information to be analyzed and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
The structure obtaining module 10 is further configured to obtain a structural characteristic of the vehicle to be measured; determining structural rigidity points and component attachment points of the vehicle to be tested according to the structural characteristics; and determining the structural node corresponding to the vehicle to be tested according to the structural rigidity point and the component attachment point.
The model building module 20 is further configured to determine coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics; determining the position information of the structural node according to the coordinate unit information; and constructing a geometric model corresponding to the vehicle to be tested based on the position information, and determining the point to be tested of the vehicle to be tested according to the geometric model.
The information acquisition module 30 is further configured to acquire a current test item and vehicle information corresponding to the vehicle to be tested, where the current test item includes a starting test item, an acceleration test item, and a constant speed test item; determining a test strategy corresponding to the vehicle to be tested according to the vehicle information and the current test item; and controlling the vehicle to be tested to operate based on the test strategy, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested.
The information acquisition module 30 is further configured to determine an acquisition range according to the vehicle information; determining an acquisition strategy according to the acquisition range and the test strategy; and controlling the running of the vehicle to be tested based on the test strategy, and acquiring running information to be analyzed of the point to be tested in the running process of the vehicle to be tested according to the acquisition strategy.
The vibration evaluation module 40 is further configured to screen the operation information to be analyzed according to preset screening conditions to obtain initial operation information; screening the initial operation information according to a preset steady state condition to obtain steady state operation information and target operation information; and performing modal analysis on the steady-state operation information and the target operation information, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
In the embodiment, a structural node corresponding to a vehicle to be tested is obtained, a geometric model corresponding to the vehicle to be tested is constructed according to the structural node, a point to be tested of the vehicle to be tested is determined according to the geometric model, the vehicle to be tested is controlled to operate based on a test strategy corresponding to the vehicle to be tested, operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested is collected, modal analysis is performed on the operation information to be analyzed, and a modal analysis result is subjected to vibration evaluation to obtain a vibration evaluation result of the vehicle to be tested; according to the method, the geometric model corresponding to the vehicle to be tested is constructed according to the structural nodes of the vehicle to be tested, so that the point to be tested of the vehicle to be tested is accurately determined according to the geometric model, then the vehicle to be tested is controlled to run based on the test strategy corresponding to the vehicle to be tested, the running process of the vehicle is simulated, the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested is accurately collected, the collected running information to be analyzed is subjected to modal analysis, the vibration information in the running process of the vehicle is effectively analyzed, then the modal analysis result is subjected to vibration evaluation, the vibration evaluation result of the vehicle to be tested is obtained, the accuracy of collecting the running information of the vehicle to be tested is improved, the vibration evaluation efficiency is improved, and the vibration evaluation result is more accurate.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-mentioned work flows are only illustrative and do not limit the scope of the present invention, and in practical applications, those skilled in the art may select some or all of them according to actual needs to implement the purpose of the solution of the present embodiment, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in the present embodiment may be referred to a vehicle vibration evaluation method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle vibration evaluation method, characterized by comprising:
acquiring a structural node corresponding to a vehicle to be tested;
constructing a geometric model corresponding to the vehicle to be tested according to the structural nodes, and determining a point to be tested of the vehicle to be tested according to the geometric model;
controlling the vehicle to be tested to operate based on a test strategy corresponding to the vehicle to be tested, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested;
and performing modal analysis on the running information to be analyzed, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be analyzed.
2. The vehicle vibration evaluation method according to claim 1, wherein the obtaining of the structural node corresponding to the vehicle to be tested comprises:
acquiring the structural characteristics of a vehicle to be tested;
determining structural rigidity points and component attachment points of the vehicle to be tested according to the structural characteristics;
and determining a structural node corresponding to the vehicle to be tested according to the structural rigidity point and the component attachment point.
3. The vehicle vibration evaluation method according to claim 2, wherein the constructing a geometric model corresponding to the vehicle to be measured according to the structural node and determining the point to be measured of the vehicle to be measured according to the geometric model comprises:
determining coordinate unit information corresponding to the vehicle to be tested according to the structural characteristics;
determining the position information of the structural node according to the coordinate unit information;
and constructing a geometric model corresponding to the vehicle to be tested based on the position information, and determining the point to be tested of the vehicle to be tested according to the geometric model.
4. The vehicle vibration evaluation method according to claim 3, wherein the constructing a geometric model corresponding to the vehicle to be measured based on the position information and determining the point to be measured of the vehicle to be measured according to the geometric model comprises:
constructing a geometric model corresponding to the vehicle to be tested based on the position information;
determining direction information corresponding to the structural node according to the coordinate unit information;
and determining the direction to be measured corresponding to the vehicle to be measured according to the direction information, and determining the point to be measured of the vehicle to be measured according to the geometric model and the direction to be measured.
5. The vehicle vibration evaluation method according to any one of claims 1 to 4, wherein the controlling the vehicle to be tested to operate based on the test strategy corresponding to the vehicle to be tested and collecting the operation information to be analyzed of the point to be tested during the operation of the vehicle to be tested comprises:
acquiring a current test item and vehicle information corresponding to the vehicle to be tested, wherein the current test item comprises a starting test item, an acceleration test item and a constant speed test item;
determining a test strategy corresponding to the vehicle to be tested according to the vehicle information and the current test item;
and controlling the vehicle to be tested to operate based on the test strategy, and acquiring the operation information to be analyzed of the point to be tested in the operation process of the vehicle to be tested.
6. The vehicle vibration evaluation method according to claim 5, wherein the controlling the vehicle to be tested to operate based on the test strategy and collecting the operation information to be analyzed of the point to be tested during the operation of the vehicle to be tested comprises:
determining an acquisition range according to the vehicle information;
determining an acquisition strategy according to the acquisition range and the test strategy;
and controlling the running of the vehicle to be tested based on the test strategy, and acquiring running information to be analyzed of the point to be tested in the running process of the vehicle to be tested according to the acquisition strategy.
7. The vehicle vibration evaluation method according to any one of claims 1 to 4, wherein performing modal analysis on the operation information to be analyzed and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested, includes:
screening the running information to be analyzed according to preset screening conditions to obtain initial running information;
screening the initial operation information according to a preset steady state condition to obtain steady state operation information and target operation information;
and performing modal analysis on the steady-state operation information and the target operation information, and performing vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
8. A vehicle vibration evaluation device characterized by comprising:
the structure acquisition module is used for acquiring a structure node corresponding to the vehicle to be detected;
the model construction module is used for constructing a geometric model corresponding to the vehicle to be tested according to the structure nodes and determining a point to be tested of the vehicle to be tested according to the geometric model;
the information acquisition module is used for controlling the running of the vehicle to be tested based on a test strategy corresponding to the vehicle to be tested and acquiring the running information to be analyzed of the point to be tested in the running process of the vehicle to be tested;
and the vibration evaluation module is used for carrying out modal analysis on the running information to be analyzed and carrying out vibration evaluation on a modal analysis result to obtain a vibration evaluation result of the vehicle to be tested.
9. A vehicle vibration evaluation apparatus characterized by comprising: a memory, a processor, and a vehicle vibration evaluation program stored on the memory and executable on the processor, the vehicle vibration evaluation program configured to implement the vehicle vibration evaluation method according to any one of claims 1 to 7.
10. A storage medium characterized in that a vehicle vibration evaluation program is stored thereon, which when executed by a processor implements the vehicle vibration evaluation method according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117171886A (en) * | 2023-09-14 | 2023-12-05 | 广州计测检测技术股份有限公司 | Vehicle body compound vibration identification method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117171886A (en) * | 2023-09-14 | 2023-12-05 | 广州计测检测技术股份有限公司 | Vehicle body compound vibration identification method, device, equipment and storage medium |
| CN117171886B (en) * | 2023-09-14 | 2024-05-10 | 广州计测检测技术股份有限公司 | Vehicle body compound vibration identification method, device, equipment and storage medium |
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