CN116907879A - Method, system and storage medium for detecting skeleton strength of shared electric vehicle - Google Patents
Method, system and storage medium for detecting skeleton strength of shared electric vehicle Download PDFInfo
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- CN116907879A CN116907879A CN202311155146.9A CN202311155146A CN116907879A CN 116907879 A CN116907879 A CN 116907879A CN 202311155146 A CN202311155146 A CN 202311155146A CN 116907879 A CN116907879 A CN 116907879A
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- 238000012360 testing method Methods 0.000 claims abstract description 175
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000005728 strengthening Methods 0.000 claims description 6
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- 230000003014 reinforcing effect Effects 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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Abstract
The invention relates to the technical field of electric vehicles, in particular to a method, a system and a storage medium for detecting the skeleton strength of a shared electric vehicle, which comprise the following steps: acquiring corresponding different test vibration times under different actual road conditions in an operation area; acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of the framework and a vibration point at the tail end of the framework; controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration; controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions. The real vibration condition under different actual road conditions is simulated, and the detection accuracy of the skeleton strength is improved.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a method and a system for detecting the skeleton strength of a shared electric vehicle and a storage medium.
Background
The shared two-wheel vehicle has the advantages of severe use environment, high use frequency, overload and multi-person riding phenomena in common, and even artificial damage, so that the requirement on the strength of the vehicle framework is very high. If the framework breaks, accidents such as falling and the like can be caused.
However, in the actual use scene of the shared two-wheeled vehicle, the actual same pavement pothole point can cause the two-time vibration of the front wheel and the rear wheel, and the vibration of the two vibration points of the front wheel and the rear wheel are mutually affected and overlapped, the existing detection is single-point vibration detection, so that the detected framework strength life and the actual life difference after the actual throwing use are large.
Disclosure of Invention
The invention provides a method, a system and a storage medium for detecting the skeleton strength of a shared electric vehicle, which are used for solving the problem of poor detection accuracy of the skeleton strength of the shared two-wheel vehicle in the prior art.
The invention provides a method for detecting the strength of a framework of a shared electric vehicle, which comprises the following steps:
acquiring corresponding different test vibration times under different actual road conditions in an operation area;
Acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of a framework and a vibration point at the tail end of the framework of the shared electric vehicle;
controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration;
controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
Preferably, the obtaining the corresponding different test vibration times under different actual road conditions in the running area specifically includes:
different actual road conditions and corresponding different actual amplitudes in the running area and different actual vibration times are obtained; each actual road condition corresponds to each actual amplitude and the actual vibration frequency one by one;
and determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times.
Preferably, the determining the corresponding different test vibration times according to the different actual vibration amplitudes and the different actual vibration times specifically includes:
Converting the different actual amplitudes into corresponding different detection amplitudes;
determining corresponding different test vibration times according to the law of conservation of energy, different detection amplitudes and corresponding different actual vibration times;
the law of conservation of energy is:wherein, the method comprises the steps of, wherein,Ein order to be able to vibrate the energy of the energy,kfor the corresponding strengthening coefficient of each actual road condition,Athe amplitude corresponding to each actual road condition is obtained.
Preferably, the determining the corresponding different test vibration times according to the law of conservation of energy and different detection amplitudes specifically includes:
determining the energy ratio of the single test vibration energy to the single actual vibration energy corresponding to each actual road condition according to the detection amplitude, the preset experiment amplitude and the energy conservation law;
determining the reciprocal of each energy ratio as the frequency ratio of the test vibration frequency corresponding to each actual road condition to the actual vibration frequency;
taking the product of the actual vibration times corresponding to each actual road condition and the corresponding time ratio as the test vibration times corresponding to each actual road condition.
Preferably, the method further comprises the steps of before controlling the vibration of the front end vibration point of the framework of the shared electric vehicle and driving the vibration of the vibration point of the tail end of the framework, and controlling the vibration of the vibration point of the tail end of the framework and driving the vibration of the front end of the framework after the interval time so as to complete single test vibration:
A load is mounted on the skeleton of the shared electric vehicle.
Preferably, the load is mounted on the skeleton of the shared electric vehicle, and the method specifically includes:
according to different passenger carrying conditions, setting loads with different total weights;
and sequentially carrying the loads with different total weights on the framework of the shared electric vehicle according to a preset sequence.
Preferably, the interval is obtained by:
acquiring the actual distance from a vibration point at the front end of the framework to a vibration point at the tail end of the framework;
and obtaining the interval time required by the shared electric vehicle to run the actual distance at the preset simulated running speed according to the preset simulated running speed and the actual distance.
Preferably, after controlling the front end vibration point and the tail end vibration point of the skeleton to perform test vibration of different test vibration times in different simulated road conditions constructed according to different actual road conditions, the method further includes:
if the shared electric vehicle vibrates for the total test vibration times, the skeleton of the shared electric vehicle is not damaged, and the skeleton strength of the shared electric vehicle is qualified; the total test vibration number is the sum of different test vibration numbers.
The invention also provides a system for detecting the skeleton strength of the shared electric vehicle, which is used for realizing the method for detecting the skeleton strength of the shared electric vehicle, and comprises the following steps:
The road condition acquisition module is used for acquiring corresponding different test vibration times under different actual road conditions in the operation area;
the time acquisition module is used for acquiring the interval time when the same hollow point in the actual road condition sequentially passes through the vibration point at the front end of the framework and the vibration point at the tail end of the framework of the shared electric vehicle;
the single vibration module is used for controlling the front vibration point of the framework of the shared electric vehicle to vibrate and driving the rear vibration point of the framework to vibrate, and controlling the vibration of the rear vibration point of the framework and driving the front vibration point of the framework to vibrate after an interval time so as to complete single test vibration;
and the multi-vibration module is used for controlling the vibration points at the front end of the framework and the vibration points at the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
The present invention also provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor implements a method for detecting skeleton strength of a shared electric vehicle as described in any one of the above.
Compared with the prior art, the method, the system and the storage medium for detecting the skeleton strength of the shared electric vehicle have the following advantages:
1. The embodiment of the invention provides a method for detecting the skeleton strength of a shared electric vehicle, which comprises the following steps: acquiring corresponding different test vibration times under different actual road conditions in an operation area; acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of a framework and a vibration point at the tail end of the framework of the shared electric vehicle; controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration; controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions. The vibration of the front end vibration point of the framework of the shared electric vehicle is controlled to vibrate, and the vibration of the front end vibration point of the framework drives the vibration of the rear end vibration point of the framework to vibrate after the interval time, so that the running vibration condition of the shared electric vehicle passing through the same pothole point in the actual road condition is simulated, and the test vibration is more real and effective. And set up different test vibration times according to different actual road conditions corresponds to carry out the test vibration of different test vibration times in the different simulated road conditions of constructing according to different actual road conditions through control skeleton front end vibration point and skeleton tail end vibration point, will further improve the real vibration condition of skeleton of sharing electric motor car under different actual road conditions, make the vibration test intensity of the front end vibration point of skeleton and the front and back double-association vibration of skeleton tail end vibration point can more accord with reality, thereby improve the detection accuracy to the skeleton intensity of sharing two wheeler.
2. In the embodiment of the invention, different test vibration times corresponding to different actual road conditions in an operation area are obtained, and the method specifically comprises the following steps: different actual road conditions and corresponding different actual amplitudes in the running area and different actual vibration times are obtained; each actual road condition corresponds to each actual amplitude and the actual vibration times one by one; and determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times. Different actual amplitudes, actual road conditions and corresponding different actual vibration times in an operation area are obtained, so that real data are converted into test vibration data, the accuracy of the different test vibration times corresponding to the different actual road conditions can be improved, and the test vibration condition of the shared electric vehicle is more accurate and is more fit with the vibration condition in a real running state.
3. In the embodiment of the invention, the corresponding different test vibration times are determined according to different actual vibration amplitudes and different actual vibration times, and the method specifically comprises the following steps: converting the different actual amplitudes into corresponding different detection amplitudes; and determining corresponding different test vibration times according to the law of conservation of energy, different detection amplitudes and corresponding different actual vibration times. According to the energy conservation law, different detection amplitudes and corresponding different actual vibration times, the corresponding different test vibration times of the shared vehicle under different road conditions can be obtained, so that the vibration of the shared electric vehicle under each actual road condition is more reliable.
4. In the embodiment of the invention, the vibration of the front end vibration point of the framework of the shared electric vehicle is controlled to vibrate and the vibration of the rear end vibration point of the framework is driven, and after the interval time, the vibration of the vibration point of the rear end of the framework is controlled and the vibration of the front end vibration point of the framework is driven, so that before the single test vibration is completed, the method further comprises the following steps: a load is mounted on the skeleton of the shared electric vehicle. By loading the load on the framework of the shared electric vehicle, the shared electric vehicle can perform test vibration under the condition of loading the load, so that the detection is closer to the real vibration condition in running, and the reliability of the detection is further improved.
5. In the embodiment of the invention, a load is carried on a framework of a shared electric vehicle, and the method specifically comprises the following steps: according to different passenger carrying conditions, setting loads with different total weights; and sequentially carrying the loads with different total weights on the framework of the shared electric vehicle according to a preset sequence. The loads with different total weights are sequentially carried on the framework of the shared electric vehicle, so that the shared electric vehicle can simulate different passenger carrying conditions to vibrate, and the reliability of the detection is further improved.
6. The interval time in the embodiment of the invention is obtained through the following steps: acquiring the actual distance from a vibration point at the front end of the framework to a vibration point at the tail end of the framework; and obtaining the interval time required by the shared electric vehicle to run the actual distance at the preset simulated running speed according to the simulated running speed and the actual distance. The interval time can be determined through the actual distance from the vibration point at the front end of the framework to the vibration point at the tail end of the framework and the preset simulated running speed, so that the vibration condition of the vibration point at the front end of the framework and the vibration point at the tail end of the framework at the same pothole point under the simulated running speed can be simulated through the confirmation time, and the front-back double-association vibration test intensity can be more practical.
7. The invention also provides a system for detecting the skeleton strength of the shared electric vehicle, which is used for realizing the method for detecting the skeleton strength of the shared electric vehicle, and has the same beneficial effects as the method for detecting the skeleton strength of the shared electric vehicle, and the description is omitted herein.
8. The invention also provides a computer readable storage medium, which has the same beneficial effects as the method for detecting the skeleton strength of the shared electric vehicle, and the description is omitted here.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart illustrating steps of a method for detecting the skeleton strength of a shared electric vehicle according to a first embodiment of the present invention.
Fig. 2 is a flowchart showing a specific step S10 of the method for detecting the skeleton strength of the shared electric vehicle according to the first embodiment of the present invention.
Fig. 3 is a flowchart showing a specific step of step S12 of the method for detecting the skeleton strength of the shared electric vehicle according to the first embodiment of the present invention.
Fig. 4 is a flowchart illustrating a second step of the method for detecting the skeleton strength of the shared electric vehicle according to the first embodiment of the present invention.
Fig. 5 is a flowchart illustrating a step of the method for detecting the skeleton strength of the shared electric vehicle according to the first embodiment of the present invention.
Fig. 6 is a block diagram of a system for detecting the skeleton strength of a shared electric vehicle according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples of implementation in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The terms "vertical," "horizontal," "left," "right," "upper," "lower," "upper left," "upper right," "lower left," "lower right," and the like are used herein for illustrative purposes only.
Referring to fig. 1, a first embodiment of the present invention provides a method for detecting the strength of a skeleton of a shared electric vehicle, including:
s10: acquiring corresponding different test vibration times under different actual road conditions in an operation area;
S20: acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of a framework and a vibration point at the tail end of the framework of the shared electric vehicle;
s30: controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration;
s40: controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
It is understood that the running area is a running area of a shared electric vehicle which is preset and put on the road surface, and the shared electric vehicle can run in the corresponding running area. The test vibration times are the times of test vibration converted from the corresponding actual vibration times under each actual road condition in the time of normal running of the shared electric vehicle with qualified framework strength.
It can be understood that, through step S10, the corresponding different test vibration times under different actual road conditions in the operation area can be obtained, so that the corresponding different simulated road conditions can be constructed according to the different actual road conditions, and the test vibration times of the shared electric vehicle to be detected under the different simulated road conditions can be determined. And through step S20, the interval time that the same hollow point passes through the front end vibration point and the tail end vibration point of the skeleton of the electric vehicle in sequence in actual road conditions can be obtained, that is, the interval time that the front end vibration point and the tail end vibration point of the skeleton of the electric vehicle pass through the same hollow point in sequence. Through step S30, the front end vibration point of the framework of the shared electric vehicle can be controlled to vibrate, and when the front end vibration point of the framework vibrates, the rear end vibration point of the framework can be driven to vibrate; and after the interval time, the vibration of the vibration point at the tail end of the framework is controlled, and when the vibration point at the tail end of the framework vibrates, the vibration point at the front end of the framework can be driven to vibrate so as to finish single test vibration of the shared electric vehicle to be detected, and front-back double-association vibration of the vibration point at the front end of the framework and the vibration point at the tail end of the framework of the shared electric vehicle is realized. The driving vibration condition that the sharing electric vehicle passes through the same hollow point under the actual road condition is simulated, so that the test vibration is more real and effective. And through step S40, after corresponding different test vibration times are determined according to different actual road conditions, the vibration points at the front end of the framework and the vibration points at the tail end of the framework can be controlled to perform test vibration of different test vibration times in different simulated road conditions constructed according to different actual road conditions, so that the to-be-detected shared electric vehicle can more accurately simulate the vibration conditions of the framework under different actual road conditions, the front and rear double-association vibration test intensities of the vibration points at the front end of the framework and the vibration points at the tail end of the framework can be more practical, more accurate test results are obtained, and the detection accuracy of the framework strength of the shared electric vehicle is improved. In addition, the factory inspection capability of the shared electric vehicle enterprises is improved, the quality level of the shared electric vehicles is improved, and the development of the detection standard of the shared electric vehicle industry is promoted.
It can be understood that the test vibration can be performed on the shared electric vehicle to be detected in a laboratory, whether the fault conditions such as cracking, deformation or damage occur in the shared electric vehicle can be monitored in real time in the test vibration process, and the service life of the skeleton of the shared electric vehicle to be detected is converted through the accumulated test vibration times corresponding to the moment when the fault conditions such as cracking, deformation or damage occur, so that the service life of the skeleton of the shared electric vehicle to be detected can be accurately known, and whether the shared electric vehicle is qualified can be judged.
Optionally, the simulated road conditions may include a single simulated road condition constructed according to an actual road condition, and may further include combining at least two single simulated road conditions according to a preset combination sequence to form multiple combined simulated road conditions. The corresponding combined test vibration number can be the sum of the test vibration numbers corresponding to a single simulated road condition in the combined simulated road conditions. Therefore, the vibration points at the front end of the framework and the vibration points at the tail end of the framework can be controlled to correspondingly perform test vibration of the combined test vibration times in various combined simulation road conditions, so that the real vibration condition of the shared electric vehicle continuously running under different actual road conditions is simulated, more accurate test results are obtained, and the detection accuracy of the framework strength of the shared electric vehicle is further improved.
Referring to fig. 2, further, step S10 specifically includes:
s11: different actual road conditions and corresponding different actual amplitudes in the running area and different actual vibration times are obtained; each actual road condition corresponds to each actual amplitude and the actual vibration frequency one by one;
s12: and determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times.
It can be understood that the running area includes a plurality of different actual road conditions, the state and distribution of the pits on each actual road condition are different, and the actual vibration times and the actual vibration amplitudes of the shared electric vehicle under different actual road conditions are different, so that the test vibration times in the simulated road conditions corresponding to the actual vibration times are also different. Therefore, through S101, different actual road conditions and corresponding different actual vibration times in the running area can be obtained through detection and the like, the actual road condition characteristics corresponding to the actual road conditions are determined according to the actual road conditions, the actual amplitude is determined according to the actual road condition characteristics, and each actual road condition corresponds to each actual amplitude and each actual vibration time uniformly. In step S102, the corresponding different test vibration times, that is, each actual road condition, each actual amplitude, the actual vibration times and the test vibration times, are determined according to the actual vibration times of the actual amplitude corresponding to the actual road condition, and the test vibration times are uniformly and uniformly corresponding to each other. Therefore, the real data can be converted into the test vibration data, and the accuracy of different test vibration times corresponding to different actual road conditions is improved, so that the test vibration condition of the shared electric vehicle is more accurate and is more fit with the vibration condition in the real running state.
It should be noted that different actual road conditions include railway intersections, vibrating roads, round depressions, short wave roads, curb impact roads, 30-degree angle roadblock roads, and flat roads. The vibration on the flat road is negligible, and the actual vibration number and the actual amplitude of the corresponding flat road are 0, whereby the test vibration number is also 0. And the railway crossing, the vibrating road, the round hollow road, the short wave road, the curb impact road and the 30-degree angle roadblock road are corresponding to different actual road condition characteristics, and the actual road condition characteristics of the flat road are ignored. The characteristics of the actual road condition include, but are not limited to, the height, width, gradient, i.e., angle, distance, diameter and wavelength of the actual road condition within the corresponding preset mileage range. Different actual road conditions characteristics determine the actual vibration times and the actual vibration amplitudes under the road conditions. Therefore, the test vibration times are required to be determined according to each actual road condition.
It should be noted that the simulated road condition is specifically simulated according to the actual road condition characteristics corresponding to the actual road condition.
Referring to fig. 3, further, step S12 specifically includes:
s121: converting the different actual amplitudes into corresponding different detection amplitudes;
S122: determining corresponding different test vibration times according to the law of conservation of energy, different detection amplitudes and corresponding different actual vibration times;
the law of conservation of energy is:wherein, the method comprises the steps of, wherein,Ein order to be able to vibrate the energy of the energy,kfor the corresponding strengthening coefficient of each actual road condition,Athe amplitude corresponding to each actual road condition is obtained.
It can be appreciated that, before the shared electric vehicle to be detected is controlled to vibrate, the obtained actual data needs to be converted into test data, and specifically, the actual amplitude and the actual vibration frequency need to be converted. The different actual amplitudes may be converted into corresponding different detected amplitudes, via step 1021. Specifically, the actual amplitude is twice the corresponding detected amplitude, and the different actual amplitudes are converted according to the multiple. Through step S1022, the actual vibration frequency is converted into the corresponding test vibration frequency according to the law of conservation of energy, the detection amplitude and the corresponding actual vibration frequency, so that the accurate vibration frequency is obtained, the accuracy and the reliability of the test data are improved, and the vibration of the shared electric vehicle under each actual road condition is more reliable.
The reinforcing coefficient of the railway crossing is 12.6; the strengthening coefficient of the vibration path is 4.9; the strengthening coefficient of the round pothole is 13.6; the enhancement coefficient of the short-circuit is 4.9; the strengthening coefficient of the curb impact road is 5.8; the reinforcing factor of a 30 degree angle barrier is 14.3.
Further, step S122 specifically includes:
s1221: determining the energy ratio of the single test vibration energy to the single actual vibration energy corresponding to each actual road condition according to the detection amplitude, the preset experiment amplitude and the energy conservation law;
s1222: determining the reciprocal of each energy ratio as the frequency ratio of the test vibration frequency corresponding to each actual road condition to the actual vibration frequency;
s1223: taking the product of the actual vibration times corresponding to each actual road condition and the corresponding time ratio as the test vibration times corresponding to each actual road condition.
It is understood that the preset experimental amplitude is an amplitude value of the preset test vibration. In order to ensure the accuracy of the test, the total energy of the actual vibration under each actual road condition is the same as the total vibration amount of the test, and different detection amplitudes are converted into preset experimental amplitudes under the condition that the total energy of the vibration is the same. From this, it is known from the law of conservation of energy that the energy of vibration is proportional to the square of amplitude and is independent of frequency, by step S1221. The energy ratio of the corresponding single test vibration energy to the single actual vibration energy under each actual road condition is the square of the preset experimental amplitude/the square of the detection amplitude. Therefore, in step S1222, the reciprocal of each energy ratio is determined as the ratio of the number of times of the test vibration corresponding to each actual road condition to the number of times of the actual vibration, that is, the ratio of the number of times of the test vibration corresponding to each actual road condition to the number of times of the actual vibration is the square of the detected amplitude/the square of the preset experimental amplitude. Thereby ensuring that the total energy of the actual vibration under each actual road condition is the same as the total amount of the test vibration. Therefore, when the test vibration is performed, the actual vibration frequency is different from the corresponding test vibration frequency under each actual road condition, so that the total energy of the actual vibration is ensured to be the same as the total amount of the test vibration by increasing or decreasing the test vibration frequency. Thus, in step S1223, the product of the actual vibration frequency corresponding to each actual road condition and the corresponding frequency ratio may be used as the test vibration frequency corresponding to each actual road condition. Under the condition that the total energy of the actual vibration under each actual road condition is identical to the total quantity of the test vibration, the detection amplitude conversion is converted into the preset experiment amplitude, and the test vibration times are accurately obtained, so that the test accuracy is improved. For example, the preset test amplitude is 15mm, and table 1 shows the test vibration times of different actual road conditions.
TABLE 1
Referring to fig. 4, further, before step S30, the method further includes:
s29: a load is mounted on the skeleton of the shared electric vehicle.
As can be appreciated, when the shared electric vehicle is used, the left and right handlebars, the five-way and the saddle on the skeleton of the shared electric vehicle are subjected to different pressures, so that a load is required to be mounted on the skeleton of the shared electric vehicle before the test vibration is performed. Specifically, the weights of different weights can be correspondingly arranged on the left handle bar, the right handle bar, the five-way handle bar and the saddle on the framework of the shared electric vehicle so as to simulate the real situation that the shared electric vehicle is used by a user. Therefore, the stress part of the framework of the shared electric vehicle can carry out test vibration under the condition of carrying the load, so that the detection is closer to the real vibration condition in running, and the reliability and accuracy of the detection are improved.
Further, step S29 specifically includes:
s291: according to different passenger carrying conditions, setting loads with different total weights;
s292: and sequentially carrying the loads with different total weights on the framework of the shared electric vehicle according to a preset sequence.
It will be appreciated that since the shared electric vehicle will be used by multiple users, the weight of the multiple users will vary. Therefore, loads of different total weights can be provided, and the weights of the loads of the left and right handlebars, the five-way joint, and the saddle, which are respectively mounted on the frame, are also different.
It should be noted that the preset sequence is a preset rule for ordering loads with different total weights. The rule may be any of from small to large, from large to small, or out of order, depending on the weight.
It can be appreciated that the loads of different total weights can be sequentially carried on the skeleton of the shared electric vehicle according to a preset sequence. Therefore, the framework of the shared electric vehicle can be controlled to sequentially carry loads with different total weights for vibration, namely after the former total weight of the framework is carried for vibration, the framework is replaced by the load with the weight different from the former total weight for vibration, and the test vibration times of the two-round vibration can be the same. The shared electric vehicle can simulate different passenger carrying conditions to test vibration, and the reliability and accuracy of the detection can be further improved.
Further, the interval time is obtained by:
s201: acquiring the actual distance from a vibration point at the front end of the framework to a vibration point at the tail end of the framework;
s202: and obtaining the interval time required by the shared electric vehicle to run the actual distance at the preset simulated running speed according to the preset simulated running speed and the actual distance.
It can be understood that the actual distance from the vibration point at the front end of the skeleton to the vibration point at the tail end of the skeleton can be detected and obtained, so that the interval time can be calculated according to the preset simulated running speed and the actual distance, and the interval time can be known to be the ratio of the actual distance to the preset simulated running speed according to a path formula. The method has the advantages that the interval time can be determined through the actual distance from the vibration point at the front end of the framework to the vibration point at the tail end of the framework and the preset simulated running speed, so that the vibration condition of the vibration point at the front end of the framework and the vibration point at the tail end of the framework at the same pothole point can be simulated through the confirmation time, and the front-back double-association vibration test intensity can be more practical.
Optionally, the actual distance from the vibration point at the front end of the skeleton to the vibration point at the tail end of the skeleton is fixed, but the obtained interval time is different due to different preset simulated running speeds. Therefore, different preset simulated running speeds can be preset, corresponding different interval times are obtained, and after the framework front end vibration point and the framework tail end vibration point of the shared electric vehicle are controlled to perform multiple test vibrations according to the current preset simulated running speed and the current interval time, the framework front end vibration point and the framework tail end vibration point of the shared electric vehicle can be sequentially controlled to perform the test vibrations of the same times according to the preset simulated running speed and the different interval time which are different from the last time, so that the real vibration condition of the framework is simulated at different speeds, and the reliability of the front-back double-association vibration test intensity is improved.
Referring to fig. 5, further, after step S40, the method further includes:
s50: if the shared electric vehicle vibrates for the total test vibration times, the skeleton of the shared electric vehicle is not damaged, and the skeleton strength of the shared electric vehicle is qualified; the total test vibration number is the sum of different test vibration numbers.
It can be understood that the total test vibration frequency is the sum of the test vibration frequencies converted from corresponding different actual vibration frequencies under different actual road conditions in the time when the shared electric vehicle with qualified skeleton strength can normally run, that is, the sum of different test vibration frequencies. If the to-be-detected shared electric vehicle vibrates after the total test vibration times, the to-be-detected shared electric vehicle has no defects such as cracking, deformation and damage on the framework, and the strength of the framework of the shared electric vehicle is qualified. The method and the device have the advantages that whether the skeleton strength of the shared vehicle is qualified or not is determined by detecting the damage condition on the skeleton, so that the condition that the skeleton strength of the released shared electric vehicle is qualified can be accurately known. In addition, the safety and the reliability of the shared electric vehicle can be improved, and the damage to human bodies caused by the fracture of a framework in the running process of the vehicle can be prevented.
It can be understood that if the total vibration times are not reached, the to-be-detected shared electric vehicle has the defects of cracking, deformation or damage, i.e. the skeleton strength of the to-be-tested shared electric vehicle is not qualified. The accumulated test vibration times corresponding to the moment can be counted, and the service life of the skeleton of the shared electric vehicle to be detected is converted according to the accumulated test vibration times, so that the service life of the skeleton of the shared electric vehicle to be detected can be accurately obtained.
Referring to fig. 6, a second embodiment of the present invention provides a system for detecting the skeleton strength of a shared electric vehicle, which is configured to implement the method for detecting the skeleton strength of a shared electric vehicle in the first embodiment, including:
the road condition acquisition module 10 is used for acquiring different test vibration times corresponding to different actual road conditions in the running area;
the time acquisition module 20 is used for acquiring the interval time when the same hollow point in the actual road condition sequentially passes through the vibration point at the front end of the framework and the vibration point at the tail end of the framework of the shared electric vehicle;
the single vibration module 30 is used for controlling the front vibration point of the framework of the shared electric vehicle to vibrate and driving the rear vibration point of the framework to vibrate, and controlling the vibration of the rear vibration point of the framework and driving the front vibration point of the framework to vibrate after an interval time so as to complete single test vibration;
The multiple vibration module 40 is used for controlling the front vibration point of the skeleton and the rear vibration point of the skeleton to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
It can be understood that, through the road condition obtaining module 10, different test vibration times corresponding to different actual road conditions in the operation area can be obtained, so that different corresponding simulated road conditions can be constructed according to different actual road conditions, and the test vibration times of the shared electric vehicle to be detected under different simulated road conditions can be determined. And the time acquisition module 20 acquires the interval time that the same hollow point sequentially passes through the front end vibration point and the tail end vibration point of the framework of the shared electric vehicle in actual road conditions, namely the interval time that the front end vibration point and the tail end vibration point of the framework of the shared electric vehicle sequentially pass through the same hollow point. The single vibration module 30 is used for controlling the front vibration point of the framework of the shared electric vehicle to vibrate, and when the front vibration point of the framework vibrates, the rear vibration point of the framework can be driven to vibrate; and after the interval time, the vibration of the vibration point at the tail end of the framework is controlled, and when the vibration point at the tail end of the framework vibrates, the vibration point at the front end of the framework can be driven to vibrate, so that the single test vibration of the shared electric vehicle to be detected is completed, and the front-back double-association vibration of the vibration point at the front end of the framework and the vibration point at the tail end of the framework of the shared electric vehicle is realized. The driving vibration condition that the sharing electric vehicle passes through the same hollow point under the actual road condition is simulated, so that the test vibration is more real and effective. And through the multiple vibration module 40, after corresponding different test vibration times are determined according to different actual road conditions, the vibration points at the front end of the framework and the vibration points at the tail end of the framework can be controlled to perform test vibration of different test vibration times in different simulated road conditions constructed according to different actual road conditions, so that the to-be-detected shared electric vehicle can more accurately simulate the vibration conditions of the framework under different actual road conditions, the front-and-rear double-association vibration test strength of the vibration points at the front end of the framework and the vibration points at the tail end of the framework can be more practical, more accurate test results are obtained, and the detection accuracy of the framework strength of the shared electric vehicle is improved. In addition, the factory inspection capability of the shared electric vehicle enterprises is improved, the quality level of the shared electric vehicles is improved, and the development of the detection standard of the shared electric vehicle industry is promoted.
A third embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for detecting skeleton strength of a shared electric vehicle according to the first embodiment.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art will also appreciate that the embodiments described in the specification are alternative embodiments and that the acts and modules referred to are not necessarily required for the present invention.
In various embodiments of the present application, it should be understood that the sequence numbers of the foregoing processes do not imply that the execution sequences of the processes should be determined by the functions and internal logic of the processes, and should not be construed as limiting the implementation of the embodiments of the present application.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, with the determination being made based upon the functionality involved. It will be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Compared with the prior art, the method, the system and the storage medium for detecting the skeleton strength of the shared electric vehicle have the following advantages:
1. the embodiment of the invention provides a method for detecting the skeleton strength of a shared electric vehicle, which comprises the following steps: acquiring corresponding different test vibration times under different actual road conditions in an operation area; acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of a framework and a vibration point at the tail end of the framework of the shared electric vehicle; controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration; controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions. The vibration of the front end vibration point of the framework of the shared electric vehicle is controlled to vibrate, and the vibration of the front end vibration point of the framework drives the vibration of the rear end vibration point of the framework to vibrate after the interval time, so that the running vibration condition of the shared electric vehicle passing through the same pothole point in the actual road condition is simulated, and the test vibration is more real and effective. And set up different test vibration times according to different actual road conditions corresponds to carry out the test vibration of different test vibration times in the different simulated road conditions of constructing according to different actual road conditions through control skeleton front end vibration point and skeleton tail end vibration point, will further improve the real vibration condition of skeleton of sharing electric motor car under different actual road conditions, make the vibration test intensity of the front end vibration point of skeleton and the front and back double-association vibration of skeleton tail end vibration point can more accord with reality, thereby improve the detection accuracy to the skeleton intensity of sharing two wheeler.
2. In the embodiment of the invention, different test vibration times corresponding to different actual road conditions in an operation area are obtained, and the method specifically comprises the following steps: different actual road conditions and corresponding different actual amplitudes in the running area and different actual vibration times are obtained; each actual road condition corresponds to each actual amplitude and the actual vibration times one by one; and determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times. Different actual amplitudes, actual road conditions and corresponding different actual vibration times in an operation area are obtained, so that real data are converted into test vibration data, the accuracy of the different test vibration times corresponding to the different actual road conditions can be improved, and the test vibration condition of the shared electric vehicle is more accurate and is more fit with the vibration condition in a real running state.
3. In the embodiment of the invention, the corresponding different test vibration times are determined according to different actual vibration amplitudes and different actual vibration times, and the method specifically comprises the following steps: converting the different actual amplitudes into corresponding different detection amplitudes; and determining corresponding different test vibration times according to the law of conservation of energy, different detection amplitudes and corresponding different actual vibration times. According to the energy conservation law, different detection amplitudes and corresponding different actual vibration times, the corresponding different test vibration times of the shared vehicle under different road conditions can be obtained, so that the vibration of the shared electric vehicle under each actual road condition is more reliable.
4. In the embodiment of the invention, the vibration of the front end vibration point of the framework of the shared electric vehicle is controlled to vibrate and the vibration of the rear end vibration point of the framework is driven, and after the interval time, the vibration of the vibration point of the rear end of the framework is controlled and the vibration of the front end vibration point of the framework is driven, so that before the single test vibration is completed, the method further comprises the following steps: a load is mounted on the skeleton of the shared electric vehicle. By loading the load on the framework of the shared electric vehicle, the shared electric vehicle can perform test vibration under the condition of loading the load, so that the detection is closer to the real vibration condition in running, and the reliability of the detection is further improved.
5. In the embodiment of the invention, a load is carried on a framework of a shared electric vehicle, and the method specifically comprises the following steps: according to different passenger carrying conditions, setting loads with different total weights; and sequentially carrying the loads with different total weights on the framework of the shared electric vehicle according to a preset sequence. The loads with different total weights are sequentially carried on the framework of the shared electric vehicle, so that the shared electric vehicle can simulate different passenger carrying conditions to vibrate, and the reliability of the detection is further improved.
6. The interval time in the embodiment of the invention is obtained through the following steps: acquiring the actual distance from a vibration point at the front end of the framework to a vibration point at the tail end of the framework; and obtaining the interval time required by the shared electric vehicle to run the actual distance at the preset simulated running speed according to the simulated running speed and the actual distance. The interval time can be determined through the actual distance from the vibration point at the front end of the framework to the vibration point at the tail end of the framework and the preset simulated running speed, so that the vibration condition of the vibration point at the front end of the framework and the vibration point at the tail end of the framework at the same pothole point under the simulated running speed can be simulated through the confirmation time, and the front-back double-association vibration test intensity can be more practical.
7. The invention also provides a system for detecting the skeleton strength of the shared electric vehicle, which is used for realizing the method for detecting the skeleton strength of the shared electric vehicle, and has the same beneficial effects as the method for detecting the skeleton strength of the shared electric vehicle, and the description is omitted herein.
8. The invention also provides a computer readable storage medium, which has the same beneficial effects as the method for detecting the skeleton strength of the shared electric vehicle, and the description is omitted here.
The above describes in detail a method, a system and a storage medium for detecting skeleton strength of a shared electric vehicle disclosed in the embodiments of the present invention, and specific examples are applied to illustrate the principles and embodiments of the present invention, where the above description of the embodiments is only for helping to understand the method and core ideas of the present invention; meanwhile, as for those skilled in the art, according to the idea of the present invention, there are changes in the specific embodiments and the application scope, and in summary, the present disclosure should not be construed as limiting the present invention, and any modifications, equivalent substitutions and improvements made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for detecting the strength of a framework of a shared electric vehicle is characterized by comprising the following steps of: the method comprises the following steps:
acquiring corresponding different test vibration times under different actual road conditions in an operation area;
acquiring interval time when the same hollow point in actual road conditions sequentially passes through a vibration point at the front end of a framework and a vibration point at the tail end of the framework of the shared electric vehicle;
controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after an interval time so as to finish single test vibration;
controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
2. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 1, wherein: the method for acquiring the corresponding different test vibration times under different actual road conditions in the operation area specifically comprises the following steps:
different actual road conditions and corresponding different actual amplitudes in the running area and different actual vibration times are obtained; each actual road condition corresponds to each actual amplitude and the actual vibration frequency one by one;
And determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times.
3. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 2, wherein: determining corresponding different test vibration times according to different actual vibration amplitudes and different actual vibration times, wherein the method specifically comprises the following steps of:
converting the different actual amplitudes into corresponding different detection amplitudes;
determining corresponding different test vibration times according to the law of conservation of energy, different detection amplitudes and corresponding different actual vibration times;
the law of conservation of energy is:wherein, the method comprises the steps of, wherein,Ein order to be able to vibrate the energy of the energy,kfor the corresponding strengthening coefficient of each actual road condition,Athe amplitude corresponding to each actual road condition is obtained.
4. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 3, wherein: according to the law of conservation of energy and different detection amplitudes, corresponding different test vibration times are determined, and the method specifically comprises the following steps:
determining the energy ratio of the single test vibration energy to the single actual vibration energy corresponding to each actual road condition according to the detection amplitude, the preset experiment amplitude and the energy conservation law;
determining the reciprocal of each energy ratio as the frequency ratio of the test vibration frequency corresponding to each actual road condition to the actual vibration frequency;
Taking the product of the actual vibration times corresponding to each actual road condition and the corresponding time ratio as the test vibration times corresponding to each actual road condition.
5. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 1, wherein: controlling the vibration point at the front end of the framework of the shared electric vehicle to vibrate and driving the vibration point at the tail end of the framework to vibrate, and controlling the vibration of the vibration point at the tail end of the framework and driving the vibration point at the front end of the framework to vibrate after the interval time so as to finish single test vibration, wherein the method further comprises:
a load is mounted on the skeleton of the shared electric vehicle.
6. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 5, wherein: the method for loading the load on the framework of the shared electric vehicle specifically comprises the following steps:
according to different passenger carrying conditions, setting loads with different total weights;
and sequentially carrying the loads with different total weights on the framework of the shared electric vehicle according to a preset sequence.
7. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 1, wherein: the interval time is obtained by the following steps:
acquiring the actual distance from a vibration point at the front end of the framework to a vibration point at the tail end of the framework;
And obtaining the interval time required by the shared electric vehicle to run the actual distance at the preset simulated running speed according to the preset simulated running speed and the actual distance.
8. The method for detecting the strength of a framework of a shared electric vehicle as claimed in claim 1, wherein: after controlling the vibration points at the front end and the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions, the method further comprises:
if the shared electric vehicle vibrates for the total test vibration times, the skeleton of the shared electric vehicle is not damaged, and the skeleton strength of the shared electric vehicle is qualified; the total test vibration number is the sum of different test vibration numbers.
9. A system for detecting the skeleton strength of a shared electric vehicle, for implementing the method for detecting the skeleton strength of a shared electric vehicle according to any one of claims 1 to 8, characterized in that: comprising the following steps:
the road condition acquisition module is used for acquiring corresponding different test vibration times under different actual road conditions in the operation area;
the time acquisition module is used for acquiring the interval time when the same hollow point in the actual road condition sequentially passes through the vibration point at the front end of the framework and the vibration point at the tail end of the framework of the shared electric vehicle;
The single vibration module is used for controlling the front vibration point of the framework of the shared electric vehicle to vibrate and driving the rear vibration point of the framework to vibrate, and controlling the vibration of the rear vibration point of the framework and driving the front vibration point of the framework to vibrate after an interval time so as to complete single test vibration;
and the multi-vibration module is used for controlling the vibration points at the front end of the framework and the vibration points at the tail end of the framework to perform test vibration with different test vibration times in different simulated road conditions constructed according to different actual road conditions.
10. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program when executed by a processor implements a method for detecting skeleton strength of a shared electric vehicle according to any one of claims 1-8.
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