CN106248408A - A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter - Google Patents
A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter Download PDFInfo
- Publication number
- CN106248408A CN106248408A CN201610875606.9A CN201610875606A CN106248408A CN 106248408 A CN106248408 A CN 106248408A CN 201610875606 A CN201610875606 A CN 201610875606A CN 106248408 A CN106248408 A CN 106248408A
- Authority
- CN
- China
- Prior art keywords
- spectrum
- vibration environment
- vibration
- emus
- life test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01M17/08—Railway vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses the generation method of the vibration environment long-life test spectrum of a kind of motor train unit converter, comprise the steps: that the vibration data according to the current transformer being installed on EMUs obtains vibration environment specification spectrum；The root-mean-square value g of vibration environment specification spectrum is calculated according to vibration environment specification spectrum1；Distance travelled L entire life, average running speed V, test period T and the exponent m of EMUs according to EMUs pass through formula β=(L/V × T)1/mCalculate acceleration ratio factor beta；Root-mean-square value g according to acceleration ratio factor beta with vibration environment specification spectrum1By formula g2=β × g1Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2；Root-mean-square value g according to vibration environment long-life test spectrum2Show that vibration environment long-life test is composed.Said method, can obtain accurate vibration environment long-life test spectrum, be favorably improved inspection reliability.
Description
Technical field
The present invention relates to rail traffic vehicles equipment technical field, particularly to the vibration environment of a kind of motor train unit converter
The generation method of long-life test spectrum.
Background technology
Along with the fast development of China's track traffic industry, market proposes higher for the stability of motor train unit converter
Requirement.
For the ease of the structural strength of motor train unit converter and durability etc. are tested, generally require employing longevity
Life simulation test carries out quality inspection, to guarantee the security reliability of motor train unit converter.But, by the actual measurement collected
Vibration criterion spectrum after data or conclusion, it is impossible to be directly used in long-life simulation test.
Summary of the invention
It is an object of the invention to provide the generation method of the vibration environment long-life test spectrum of a kind of motor train unit converter, should
Generation method can obtain accurate vibration environment long-life test spectrum, is conducive to obtaining the examination of accurate motor train unit converter
Test data, be favorably improved inspection reliability.
For achieving the above object, the present invention provides the generation that the vibration environment long-life test of a kind of motor train unit converter is composed
Method, comprises the steps:
Vibration data according to the current transformer being installed on EMUs obtains vibration environment specification spectrum；
The root-mean-square value g of described vibration environment specification spectrum is calculated according to described vibration environment specification spectrum1；
Distance travelled L entire life according to described EMUs, the average running speed V of described EMUs, test period T with
And exponent m is by formula β=(L/V × T)1/mCalculate acceleration ratio factor beta；
The root-mean-square value g composed according to described acceleration ratio factor beta and described vibration environment specification1By formula g2=β
×g1Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2；
Root-mean-square value g according to described vibration environment long-life test spectrum2Show that vibration environment long-life test is composed.
Relative to above-mentioned background technology, the generation method of the vibration environment long-life test spectrum that the present invention provides, its core
It is, acceleration ratio factor beta is optimized, introduce distance travelled L and EMUs flat entire life of EMUs
All speed of service V the two parameters, and by formula β=(L/V × T)1/mIt is calculated acceleration ratio factor beta, thus obtains
Vibration environment long-life test spectrum, it is possible to obtain more real vibration environment test condition, more conform to EMUs unsteady flow
The practical operation situation of device, contributes to the reliability promoting motor train unit converter and vibration adaptation.
Preferably, described distance travelled L entire life according to described EMUs, the average running speed V of described EMUs,
Test period T and exponent m are by formula β=(L/V × T)1/mThe step calculating acceleration ratio factor beta specifically includes:
The distance travelled L entire life >=4000000km of described EMUs,
Average running speed V >=the 250km/h of described EMUs,
Test period T=5h,
Exponent m=4；
By formula β=(L/V × T)1/mCalculate acceleration ratio factor beta.
Preferably, the described root-mean-square value calculating described vibration environment specification spectrum according to described vibration environment specification spectrum
g1Step specifically include:
Calculate the acceleration corresponding to descending slope, the rate of rise and straight spectrum that described vibration environment specification is composed respectively
Mean-square value；
Whole described acceleration mean-square values are added the root-mean-square value g obtaining described vibration environment specification spectrum1。
Preferably, the described root-mean-square value g according to described vibration environment long-life test spectrum2Draw the vibration environment long-life
The step of test spectrum specifically includes:
The slope of curve of each frequency band according to described vibration environment specification spectrum determines what vibration environment long-life test was composed
The slope of curve of each frequency band, and the slope of curve of each frequency band of described vibration environment specification spectrum is long-lived with described vibration environment
The slope of curve of each frequency band of life test spectrum is identical；
Root-mean-square value g according to described vibration environment long-life test spectrum2Show that described vibration environment long-life test is composed
The power spectral density of each frequency band；
The slope of curve and the described vibration environment of each frequency band according to described vibration environment long-life test spectrum are long-lived
The power spectral density of each frequency band of life test spectrum obtains vibration environment long-life test spectrum.
Preferably, the vibration data of the current transformer that described basis is installed on EMUs obtains the step of vibration environment specification spectrum
Specifically include:
Obtain the vibration data of the current transformer being installed on EMUs vibration suffered in described EMUs driving process；
Enter according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f according to described vibration data
Row data sectional, forms multicomponent segment data；
Respectively segment data described in each group is calculated acceleration power spectrum, according to each described acceleration merit
Rate spectrum forms feature samples；
Utilize tolerance method to carry out frequency domain data conclusion according to default tolerance factor F according to described feature samples, form vibration
Environmental specification is composed.
Preferably, described acquisition is installed on the vibration that the current transformer of EMUs is suffered in described EMUs driving process
The step of vibration data specifically include:
EMUs, in actual track running, obtain the real-time vibration data of described motor train unit converter；
Reject data during EMUs idling mode described in described real-time vibration data, obtain described vibration data.
Preferably, described according to described vibration data according to analysis of spectrum peak frequency f, statistical error e and peak frequency
Resolution ax f carries out data sectional, and the step forming multicomponent segment data specifically includes:
According to analysis of spectrum peak frequency f by formula fc=2f is calculated sample frequency fc；
According to described sample frequency fcBy formula t=1/fcIt is calculated sampling interval t；
Formula T=1/ (Δ f × e is passed through according to statistical error e and peak frequency resolution ax f2) it is calculated sample
This length T；
It is calculated sampling theory according to described smallest sample length T and described sampling interval t by formula N=T/t to hold
Amount N；
The length of described segment data is determined according to described sampling theory capacity N.
Preferably, described according to described vibration data according to analysis of spectrum peak frequency f, statistical error e and peak frequency
Resolution ax f carries out data sectional, also includes after forming the step of multicomponent segment data:
Data stationarity, the property gone through, periodicity and test of normality is carried out, when described segmentation according to described segment data
After data meet above-mentioned four kinds of inspections, carry out described respectively segment data described in each group being calculated acceleration power
Spectrum, forms the step of feature samples according to each described acceleration power spectrum.
Preferably, the vibration data of the vibration that described acquisition motor train unit converter is suffered in EMUs driving process
Step specifically includes:
To be arranged at the mounting seat of described current transformer in order to obtain the sensor of described vibration data, and described mounting seat with
The body shell of EMUs connects.
Preferably, the vibration data of the vibration that described acquisition motor train unit converter is suffered in EMUs driving process
Step specifically includes:
To be arranged at the place that layouts of described current transformer in order to obtain the sensor of described vibration data, and described in layout firm
Spend identical with the rigidity of the mounting seat of described current transformer and vibration severity respectively with vibration severity, and described mounting seat and EMUs
Body shell connect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
The generation method of the vibration environment long-life test spectrum of the motor train unit converter that Fig. 1 is provided by the embodiment of the present invention
Flow chart.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and be embodied as
The present invention is described in further detail for mode.
Refer to the vibration environment long-life test spectrum of the motor train unit converter that Fig. 1, Fig. 1 are provided by the embodiment of the present invention
The flow chart of generation method.
The generation method of the vibration environment long-life test spectrum of a kind of motor train unit converter that the present invention provides, mainly includes
Following steps:
The vibration data of the current transformer that S1, basis are installed on EMUs obtains vibration environment specification spectrum；
S2, according to described vibration environment specification spectrum calculate described vibration environment specification spectrum root-mean-square value g1；
S3, distance travelled L entire life according to described EMUs, the average running speed V of described EMUs, test period
T and exponent m are by formula β=(L/V × T)1/mCalculate acceleration ratio factor beta；
S4, the root-mean-square value g composed according to described acceleration ratio factor beta and described vibration environment specification1By formula g2
=β × g1Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2；
S5, the root-mean-square value g composed according to described vibration environment long-life test2Show that vibration environment long-life test is composed.
The core of the present invention is, in step S3, utilizes flat with described EMUs of distance travelled L entire life of EMUs
All speeds of service V are calculated acceleration ratio factor beta；And in the calculation of traditional acceleration ratio factor beta, generally
Being to be converted to hour calculate with the ordinary life of 25 years, the acceleration proportionality coefficient using traditional approach to obtain often cannot
The running status of accurate description current transformer, causes result of the test accuracy poor, is unfavorable for quality inspection.
The present invention is according to distance travelled L entire life of described EMUs, the average running speed V of described EMUs, test
Time T and exponent m are by formula β=(L/V × T)1/mCalculate acceleration ratio factor beta, thus according to described acceleration
Proportionality coefficient β and the root-mean-square value g of described vibration environment specification spectrum1By formula g2=β × g1Calculate shaking after equivalence
The root-mean-square value g of rotating ring border long-life test spectrum2, the vibration environment long-life test spectrum so obtained is more accurate, is with reality
Based on the vibration data surveyed, more conform to practical operation situation, and introduce EMUs entire life distance travelled L as ginseng
Number so that being accurately calculated of acceleration ratio factor beta, effectively simulates the indeed vibrations environment of current transformer so that test knot
The most true and reliable.
For above-mentioned steps S3, distance travelled L entire life of described EMUs preferably is set greater than being equal to by the present invention
4000000km, the average running speed V of described EMUs are more than or equal to 250km/h, test period T=5h, exponent m=4；Logical
Cross formula β=(L/V × T)1/mCalculate acceleration ratio factor beta.
According to " locomotive retirement management method ", requirement entire life of China's railway locomotive is: Engine on National Locomotive is 25 years or 400
Ten thousand kms (passenger traffic)/3,500,000 km (shipping)；The import locomotive having overhaul base is 25 years or 4,500,000 kms (passenger traffic)/400
Ten thousand kms (shipping)；Therefore according to the speed of service of standard EMUs, averagely 250 kilometers per hour more than, with 4,000,000 kilometers
As overall life, can calculate life-cycle parts needs the working time met to be 16000 hours.And along with China railways
The continuous speed-raising of train, introduces using distance travelled L entire life as the Life Calculation of train part, more conforms to actual development need
Ask.And owing to current transformer is as the core component of EMUs, the structural maintenance inconvenience to its cabinet, it is therefore necessary to according to motor-car
The life-cycle of group is designed.
In summary, the vibration environment long-life test for motor train unit converter is composed, and introduces the entire life of EMUs
Distance travelled L, average running speed V, test period T and the exponent m of described EMUs, thus calculate and add the most reliably
Speed proportional factor beta.
In above-mentioned steps S2, calculate the mean square of described vibration environment specification spectrum according to described vibration environment specification spectrum
Root g1Step specifically include:
Calculate the acceleration corresponding to descending slope, the rate of rise and straight spectrum that described vibration environment specification is composed respectively
Mean-square value；
Whole described acceleration mean-square values are added the root-mean-square value g obtaining described vibration environment specification spectrum1。
It is to say, after obtaining vibration environment specification spectrum, be respectively directed to its descending slope, the rate of rise and straight
Whole acceleration mean-square values are added by spectrum degree of being accelerated mean-square calculation, thus obtain the root-mean-square of vibration environment specification spectrum
Value g1；Relevant calculating process is referred to prior art, will not be described in great detail herein.
Then carry out step S4, i.e. according to described acceleration ratio factor beta and described vibration environment specification compose mean square
Root g1By formula g2=β × g1Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2；This step
Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2。
In step s 5, according to the root-mean-square value g of described vibration environment long-life test spectrum2Draw the vibration environment long-life
The step of test spectrum specifically includes:
The slope of curve of each frequency band according to described vibration environment specification spectrum determines what vibration environment long-life test was composed
The slope of curve of each frequency band, and the slope of curve of each frequency band of described vibration environment specification spectrum is long-lived with described vibration environment
The slope of curve of each frequency band of life test spectrum is identical；
Root-mean-square value g according to described vibration environment long-life test spectrum2Show that described vibration environment long-life test is composed
The power spectral density of each frequency band；
The slope of curve and the described vibration environment of each frequency band according to described vibration environment long-life test spectrum are long-lived
The power spectral density of each frequency band of life test spectrum obtains vibration environment long-life test spectrum.
That is, the root-mean-square value g of the vibration environment long-life test spectrum after equivalence2Understand, according to vibration environment specification spectrum
The slope of curve of each frequency band can determine the slope of curve of each frequency band that vibration environment long-life test composes, and according to etc.
The root-mean-square value g of the vibration environment long-life test spectrum after effect2Each frequency band that vibration environment long-life test is composed can be drawn
Power spectral density, thus obtain vibration environment long-life test spectrum；The step for be referred to prior art, herein will no longer
Repeat.
In addition, for above-mentioned steps S1, oscillation ring is obtained according to the vibration data of the current transformer being installed on EMUs
The concrete steps of border specification spectrum may include that
Obtain the vibration data of the current transformer being installed on EMUs vibration suffered in described EMUs driving process；
Enter according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f according to described vibration data
Row data sectional, forms multicomponent segment data；
Respectively segment data described in each group is calculated acceleration power spectrum, according to each described acceleration merit
Rate spectrum forms feature samples；
Utilize tolerance method to carry out frequency domain data conclusion according to default tolerance factor F according to described feature samples, form vibration
Environmental specification is composed.
Specifically, in EMUs driving process, owing to being affected by factors such as environment, cause being installed on EMUs
Current transformer vibration；The present invention gathers the vibration data of current transformer, and this vibration data is to adopt in EMUs driving process
Collection；In other words, when when EMUs idling or stopping because of other factors, the vibration data of current transformer does not include this period
Data.The acquisition mode of vibration data has multiple, present invention preferably employs the mounting seat that sensor is arranged at current transformer
Mode；That is, the mounting seat of current transformer is connected with the body shell of EMUs, and mounting seat is capable of the car of current transformer and EMUs
Body body is connected, to constitute EMUs.
The body shell of EMUs is broadly understood it can be understood as the part that is connected with current transformer, and does not answer narrow sense to manage
Solve a certain concrete parts for EMUs.
After obtaining vibration data, according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f
Carrying out data sectional, this fragmentation procedure can be:
According to analysis of spectrum peak frequency f by formula fc=2f is calculated sample frequency fc；
According to described sample frequency fcBy formula t=1/fcIt is calculated sampling interval t；
Formula T=1/ (Δ f × e is passed through according to statistical error e and peak frequency resolution ax f2) it is calculated sample
This length T；
It is calculated sampling theory according to described smallest sample length T and described sampling interval t by formula N=T/t to hold
Amount N；
The length of described segment data is determined according to described sampling theory capacity N.
It is to say, analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f should be known parameters；
Such as: analysis of spectrum peak frequency f=200Hz, statistical error e=10%, peak frequency resolution ax f=0.25Hz；Then, sampling
Frequency fc=2f=400Hz, sampling interval t=1/fc=0.0025s, smallest sample length T=1/ (Δ f × e2)=1/ (0.25
× 10%2)=400s, sampling theory capacity N=T/t=400/0.0025=160000；And 217＜ N=160000 ＜ 218, because of
This treating excess syndrome border sample size N1It is 218；According to actual samples capacity N1=T1/ t, obtains length T of segment data1=N1× t=
218× 0.0025=655.36s ≈ 11min.
By the data gathered in the above-mentioned a length of 11min being calculated segment data；I.e., it is assumed that EMUs run
55min, according to length 11min mono-section of segment data, is then divided into 5 groups of data of continuous print, and each set of segmentation packet contains
The data of 11min.Certainly, determine that the method for the length of segment data is the most multiple, however it is not limited to described herein.
After obtaining segment data, respectively segment data described in each group is calculated acceleration power spectrum, root
Feature samples is formed according to each described acceleration power spectrum；Continue to use above-mentioned it is assumed that each set of segmentation data form an acceleration
Power spectrum, forms 5 acceleration power spectrum the most altogether；Each acceleration power spectrum forms a feature samples, forms 5 spies altogether
Levy sample.
In this step, the core of the present invention is to carry out whole data segmentation, and for the time domain number after segmentation
According to carrying out frequency domain process, obtain each section of corresponding acceleration power spectrum and feature samples.
In above process, fast Fourier transform (FFT) is generally utilized to obtain acceleration power spectrum；That is, each component
Segment data all obtains acceleration power spectrum by fast Fourier transform (FFT), and the acceleration power spectrum obtained then can be formed
Feature samples.
In the prior art, it is possible to by fast Fourier transform (FFT), the time domain data recorded is converted to frequency domain number
According to, the most it is not described in detail.
After obtaining multiple feature samples, it is possible to use tolerance method carries out frequency domain data according to default tolerance factor F and returns
Receive, wherein, preset tolerance factor F and be specially the first tolerance factor F1=1.64 or the second tolerance factor F2=1.65 carry out frequency
Numeric field data is concluded, thus forms vibration environment specification spectrum.
In this step, the core of the present invention is to utilize the first tolerance factor F1=1.64 or second tolerance factor
F2=1.65 carry out tolerance calculating, thus obtain vibration environment specification spectrum the most accurately, and concrete operation process therein can
With with reference to prior art.
For the obtaining step of vibration data mentioned above, the present invention provides a kind of optimum embodiment；Due to motor-car
, in actual track running, often there is the situation of bus stop in group, when bus stop, owing to EMUs stop, and unsteady flow
Device now tends not to vibration occur；And we can gather the EMUs whole current transformers in actual track running
Vibration data in real time；That is, EMUs are during starting point to terminal this, Real-time Collection motor train unit converter real-time
Vibration data；For real-time vibration data, reject data during EMUs idling mode, to obtain above-mentioned vibration data.
Owing to EMUs are during starting point to terminal this, the real-time vibration of Real-time Collection motor train unit converter
The data volume of data is the hugest, therefore data during EMUs idling mode is rejected, and obtain is to run at EMUs
Vibration data in journey so that data validity promotes, contributes to the lifting of the precision of vibration environment specification spectrum.
As described above, step S2 is according to described vibration data according to analysis of spectrum peak frequency f, statistical error e and
Big frequency resolution Δ f carries out data sectional, also includes after forming multicomponent segment data:
Data stationarity, the property gone through, periodicity and test of normality is carried out, when described segmentation according to described segment data
After data meet above-mentioned four kinds of inspections, carry out step S3, segment data described in the most each group is calculated acceleration
Degree power spectrum, forms feature samples according to each described acceleration power spectrum.
It is to say, after data sectional, for each set of segmentation data, all carry out data stationarity, the property gone through, cycle
Property and test of normality, and above-mentioned four kinds of check systems are referred to prior art, repeat no more herein.
For the value of tolerance factor, in conjunction with the reliability requirement of track traffic, optimum of the present invention chooses the second tolerance system
Number F2=1.65, i.e. tolerance upper limit Gh(p)=[Xh(p)+1.65×Sh(p)]2；Thus improve vibration environment specification spectrum further
Precision, is conducive to simulating the vibration environment of motor train unit converter, improves the verity of quality inspection.
It should be noted that as above-mentioned overall quantity ＞ 45, it is preferred to use the second tolerance factor F2=1.65, and work as
When above-mentioned overall quantity tends to infinity, then preferably employ the first tolerance factor F1=1.64；Reliable in conjunction with track traffic
Property requirement, optimum of the present invention chooses the second tolerance factor F2=1.65.In addition, either the first tolerance factor F1=1.64
Or the second tolerance factor F2=1.65, all should be taken into account certain error i.e., the first tolerance factor F1Value can be 1.64
±0.009；Second tolerance factor F2Value can be 1.65 ± 0.009.
As described above, for the arrangement of measuring point, by point layout at the mounting seat of current transformer, if current transformer
Mounting seat sensor cannot be installed, then should choose the rigidity with mounting seat and identical the layouting of vibration severity is installed, from
And can effectively be vibrated time domain data, in order to the generation of follow-up vibration environment specification spectrum.
It should be noted that in this manual, the relational terms of such as first and second etc is used merely to one
Entity makes a distinction with other several entities, and not necessarily requires or imply and there is any this reality between these entities
Relation or order.
The generation method composed the vibration environment long-life test of motor train unit converter provided by the present invention above is carried out
It is discussed in detail.Principle and the embodiment of the present invention are set forth by specific case used herein, above example
Explanation be only intended to help to understand method and the core concept thereof of the present invention.It should be pointed out that, for the art is common
For technical staff, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these
Improve and modify in the protection domain also falling into the claims in the present invention.
Claims (10)
1. the generation method of the vibration environment long-life test spectrum of a motor train unit converter, it is characterised in that include walking as follows
Rapid:
Vibration data according to the current transformer being installed on EMUs obtains vibration environment specification spectrum；
The root-mean-square value g of described vibration environment specification spectrum is calculated according to described vibration environment specification spectrum1；
Distance travelled L entire life, average running speed V, test period T of described EMUs according to described EMUs and refer to
Number m is by formula β=(L/V × T)1/mCalculate acceleration ratio factor beta；
The root-mean-square value g composed according to described acceleration ratio factor beta and described vibration environment specification1By formula g2=β × g1
Calculate the root-mean-square value g of the spectrum of the vibration environment long-life test after equivalence2；
Root-mean-square value g according to described vibration environment long-life test spectrum2Show that vibration environment long-life test is composed.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 1, its feature
It is, described distance travelled L entire life according to described EMUs, the average running speed V of described EMUs, test period T
And exponent m is by formula β=(L/V × T)1/mThe step calculating acceleration ratio factor beta specifically includes:
The distance travelled L entire life >=4000000km of described EMUs,
Average running speed V >=the 250km/h of described EMUs,
Test period T=5h,
Exponent m=4；
By formula β=(L/V × T)1/mCalculate acceleration ratio factor beta.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 2, its feature
It is, the described root-mean-square value g calculating described vibration environment specification spectrum according to described vibration environment specification spectrum1Step tool
Body includes:
Calculate the descending slope of described vibration environment specification spectrum, the rate of rise and the acceleration corresponding to straight spectrum respectively mean square
Value；
Whole described acceleration mean-square values are added the root-mean-square value g obtaining described vibration environment specification spectrum1。
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 3, its feature
It is, the described root-mean-square value g according to described vibration environment long-life test spectrum2Draw the step that vibration environment long-life test is composed
Suddenly specifically include:
The slope of curve of each frequency band according to described vibration environment specification spectrum determines each frequency that vibration environment long-life test is composed
The slope of curve of rate section, and the slope of curve and the described vibration environment long-life of each frequency band of described vibration environment specification spectrum try
The slope of curve of each frequency band testing spectrum is identical；
Root-mean-square value g according to described vibration environment long-life test spectrum2Draw each frequency that described vibration environment long-life test is composed
The power spectral density of rate section；
The slope of curve of each frequency band according to described vibration environment long-life test spectrum and the examination of described vibration environment long-life
The power spectral density of each frequency band testing spectrum obtains vibration environment long-life test spectrum.
5. the generation composed according to the vibration environment long-life test of the motor train unit converter described in Claims 1-4 any one
Method, it is characterised in that the vibration data of the current transformer that described basis is installed on EMUs obtains the step of vibration environment specification spectrum
Suddenly specifically include:
Obtain the vibration data of the current transformer being installed on EMUs vibration suffered in described EMUs driving process；
According to described vibration data according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f number
According to segmentation, form multicomponent segment data；
Respectively segment data described in each group is calculated acceleration power spectrum, according to each described acceleration power spectrum
Form feature samples；
Utilize tolerance method to carry out frequency domain data conclusion according to default tolerance factor F according to described feature samples, form vibration environment
Specification is composed.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 5, its feature
Being, described acquisition is installed on the vibration data of the current transformer of EMUs vibration suffered in described EMUs driving process
Step specifically include:
EMUs, in actual track running, obtain the real-time vibration data of described motor train unit converter；
Reject data during EMUs idling mode described in described real-time vibration data, obtain described vibration data.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 6, its feature
It is, described enters according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f according to described vibration data
Row data sectional, the step forming multicomponent segment data specifically includes:
According to analysis of spectrum peak frequency f by formula fc=2f is calculated sample frequency fc；
According to described sample frequency fcBy formula t=1/fcIt is calculated sampling interval t；
Formula T=1/ (Δ f × e is passed through according to statistical error e and peak frequency resolution ax f2) it is calculated smallest sample length
T；
It is calculated sampling theory capacity N by formula N=T/t according to described smallest sample length T and described sampling interval t；
The length of described segment data is determined according to described sampling theory capacity N.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 7, its feature
It is, described enters according to analysis of spectrum peak frequency f, statistical error e and peak frequency resolution ax f according to described vibration data
Row data sectional, also includes after forming the step of multicomponent segment data:
Data stationarity, the property gone through, periodicity and test of normality is carried out, when described segment data according to described segment data
After meeting above-mentioned four kinds of inspections, carry out described respectively segment data described in each group being calculated acceleration power spectrum,
The step of feature samples is formed according to each described acceleration power spectrum.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 5, its feature
Being, the step of the vibration data of the vibration that described acquisition motor train unit converter is suffered in EMUs driving process is specifically wrapped
Include:
The mounting seat of described current transformer will be arranged in order to obtain the sensor of described vibration data, and described mounting seat and motor-car
The body shell of group connects.
The generation method of the vibration environment long-life test spectrum of motor train unit converter the most according to claim 5, its feature
Being, the step of the vibration data of the vibration that described acquisition motor train unit converter is suffered in EMUs driving process is specifically wrapped
Include:
To be arranged at the place that layouts of described current transformer in order to obtain the sensor of described vibration data, and described in the rigidity layouted and
Vibration severity is identical with the rigidity of the mounting seat of described current transformer and vibration severity respectively, and described mounting seat and the car of EMUs
Body body connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875606.9A CN106248408B (en) | 2016-10-08 | 2016-10-08 | A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875606.9A CN106248408B (en) | 2016-10-08 | 2016-10-08 | A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106248408A true CN106248408A (en) | 2016-12-21 |
| CN106248408B CN106248408B (en) | 2019-05-24 |
Family
ID=57611196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610875606.9A Active CN106248408B (en) | 2016-10-08 | 2016-10-08 | A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106248408B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932206A (en) * | 2017-02-20 | 2017-07-07 | 上汽通用汽车有限公司 | Road spectrum processing method and device |
| CN107727345A (en) * | 2017-09-19 | 2018-02-23 | 合肥通用机械研究院 | A kind of Non-stationary vibration signal generation method for accelerated test |
| CN109490650A (en) * | 2017-09-11 | 2019-03-19 | 中车株洲电力机车研究所有限公司 | A kind of rail traffic current transformer life predication apparatus and method |
| CN110488042A (en) * | 2019-07-22 | 2019-11-22 | 中车青岛四方机车车辆股份有限公司 | A kind of train acceleration detection method, system, electronic equipment and storage medium |
| CN110569608A (en) * | 2019-09-09 | 2019-12-13 | 中国兵器工业第五九研究所 | method and device for determining vibration severity of vehicle-mounted platform |
| CN110736595A (en) * | 2018-07-18 | 2020-01-31 | 中车株洲电力机车研究所有限公司 | Method for evaluating service life of electronic equipment in rail transit cabin |
| CN111122080A (en) * | 2018-10-31 | 2020-05-08 | 株洲中车时代电气股份有限公司 | Traction motor vibration test method and system |
| CN111523180A (en) * | 2020-05-14 | 2020-08-11 | 中国兵器工业第五九研究所 | Method for constructing acceleration test spectrum of vehicle-mounted equipment |
| CN111811640A (en) * | 2020-03-19 | 2020-10-23 | 同济大学 | Spectrum induction method based on Johnson rule |
| CN113466731A (en) * | 2021-07-29 | 2021-10-01 | 广东博力威科技股份有限公司 | Method, device, equipment and medium for detecting maximum duration of battery oscillation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040138832A1 (en) * | 2003-01-11 | 2004-07-15 | Judd John E. | Multiple discriminate analysis and data integration of vibration in rotation machinery |
| CN104268335A (en) * | 2014-09-23 | 2015-01-07 | 工业和信息化部电子第五研究所 | Vibration fatigue life predication method and system for micro-packaging assembly |
| CN105550401A (en) * | 2015-12-04 | 2016-05-04 | 北京航天时代光电科技有限公司 | Vibration response characteristic and wave trough control-based vibration input spectrum parameter determination method |
| CN105547711A (en) * | 2016-01-05 | 2016-05-04 | 上海机动车检测中心 | Motorcycle acceleration fatigue durability test method based on road simulation stand |
| CN105651478A (en) * | 2015-12-15 | 2016-06-08 | 西安交通大学青岛研究院 | Analysis method for testing fatigue life of components based on vibration signals |
-
2016
- 2016-10-08 CN CN201610875606.9A patent/CN106248408B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040138832A1 (en) * | 2003-01-11 | 2004-07-15 | Judd John E. | Multiple discriminate analysis and data integration of vibration in rotation machinery |
| CN104268335A (en) * | 2014-09-23 | 2015-01-07 | 工业和信息化部电子第五研究所 | Vibration fatigue life predication method and system for micro-packaging assembly |
| CN105550401A (en) * | 2015-12-04 | 2016-05-04 | 北京航天时代光电科技有限公司 | Vibration response characteristic and wave trough control-based vibration input spectrum parameter determination method |
| CN105651478A (en) * | 2015-12-15 | 2016-06-08 | 西安交通大学青岛研究院 | Analysis method for testing fatigue life of components based on vibration signals |
| CN105547711A (en) * | 2016-01-05 | 2016-05-04 | 上海机动车检测中心 | Motorcycle acceleration fatigue durability test method based on road simulation stand |
Non-Patent Citations (10)
| Title |
|---|
| 刘新田等: "基于低载强化的轮边减速系统耐久性试验研究", 《基于低载强化的轮边减速系统耐久性试验研究》 * |
| 姚国年等: "由实测数据确定特种产品运输模拟试验规范谱", 《振动、测试与诊断》 * |
| 孙明琦: "一种随机振动功率谱密度均方根值计算方法", 《2014年电子机械与微波结构工艺学术会议论文集》 * |
| 孙立明等: "对IEC 61373中模拟长寿命试验量级的分析", 《铁道技术监督》 * |
| 李奇志等: "振动加速因子试验方法研究", 《振动、测试与诊断》 * |
| 株洲电力机车研究所: "《中华人民共和国铁道行业标准TB/T 3058-2002 铁路应用 机车车辆设备冲击和振动试验》", 17 May 2002, 中华人民共和国铁道部 * |
| 王鹏等: "IEC 61373中模拟长寿命振动试验加速度比例系数计算方法分析", 《铁道技术监督》 * |
| 胡志强等: "《随机振动试验应用技术》", 30 December 1996, 中国计量出版社 * |
| 铁道第三勘察设计院集团有限公司等: "《中华人民共和国行业标准 TB 10621-2014 高速铁路设计规范》", 1 December 2014, 中国铁道出版社 * |
| 铁道部: "《机车报废管理办法》", 15 July 1999 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932206B (en) * | 2017-02-20 | 2019-05-03 | 上汽通用汽车有限公司 | Road spectrum processing method and device |
| CN106932206A (en) * | 2017-02-20 | 2017-07-07 | 上汽通用汽车有限公司 | Road spectrum processing method and device |
| CN109490650A (en) * | 2017-09-11 | 2019-03-19 | 中车株洲电力机车研究所有限公司 | A kind of rail traffic current transformer life predication apparatus and method |
| CN109490650B (en) * | 2017-09-11 | 2021-01-29 | 中车株洲电力机车研究所有限公司 | Device and method for predicting service life of rail transit converter |
| CN107727345A (en) * | 2017-09-19 | 2018-02-23 | 合肥通用机械研究院 | A kind of Non-stationary vibration signal generation method for accelerated test |
| CN110736595A (en) * | 2018-07-18 | 2020-01-31 | 中车株洲电力机车研究所有限公司 | Method for evaluating service life of electronic equipment in rail transit cabin |
| CN110736595B (en) * | 2018-07-18 | 2021-08-17 | 中车株洲电力机车研究所有限公司 | Method for evaluating service life of electronic equipment in rail transit cabin |
| CN111122080A (en) * | 2018-10-31 | 2020-05-08 | 株洲中车时代电气股份有限公司 | Traction motor vibration test method and system |
| CN110488042A (en) * | 2019-07-22 | 2019-11-22 | 中车青岛四方机车车辆股份有限公司 | A kind of train acceleration detection method, system, electronic equipment and storage medium |
| CN110569608B (en) * | 2019-09-09 | 2023-05-26 | 中国兵器工业第五九研究所 | Method and device for determining vibration severity of vehicle-mounted platform |
| CN110569608A (en) * | 2019-09-09 | 2019-12-13 | 中国兵器工业第五九研究所 | method and device for determining vibration severity of vehicle-mounted platform |
| CN111811640A (en) * | 2020-03-19 | 2020-10-23 | 同济大学 | Spectrum induction method based on Johnson rule |
| CN111523180A (en) * | 2020-05-14 | 2020-08-11 | 中国兵器工业第五九研究所 | Method for constructing acceleration test spectrum of vehicle-mounted equipment |
| CN111523180B (en) * | 2020-05-14 | 2023-04-07 | 中国兵器工业第五九研究所 | Method for constructing acceleration test spectrum of vehicle-mounted equipment |
| CN113466731A (en) * | 2021-07-29 | 2021-10-01 | 广东博力威科技股份有限公司 | Method, device, equipment and medium for detecting maximum duration of battery oscillation |
| CN113466731B (en) * | 2021-07-29 | 2023-09-01 | 广东博力威科技股份有限公司 | Method, device, equipment and medium for detecting maximum duration of battery bearing oscillation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106248408B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106248408A (en) | A kind of generation method of the vibration environment long-life test spectrum of motor train unit converter | |
| CN106482920A (en) | A kind of generation method of the vibration environment specification spectrum for motor train unit converter | |
| CN105005694B (en) | A kind of bridge fatigue life frequency-domain analysis method based on dynamic weighing system | |
| CN106441762B (en) | A kind of test method of motor train unit converter | |
| CN108387382B (en) | A kind of road spectrum acquisition system and method | |
| Bocciolone et al. | Pantograph–catenary monitoring by means of fibre Bragg grating sensors: Results from tests in an underground line | |
| CN105923014B (en) | A kind of track transition Amplitude Estimation method based on evidential reasoning rule | |
| CN104792937A (en) | Bridge head bump detection evaluation method based on vehicle-mounted gravitational acceleration sensor | |
| Song et al. | Characteristics of low-speed vehicle-specific power distributions on urban restricted-access roadways in beijing | |
| CN111625752B (en) | Dynamic truck scale metering method with automatic parameter fitting function | |
| CN204256792U (en) | A kind of taximeter pick-up unit based on high-accuracy position system | |
| CN107264569A (en) | A kind of track quality state evaluation method and system | |
| CN110320057A (en) | A kind of rail traffic trailer system test method and system | |
| CN102866294A (en) | Signal compatibility testing method based on rail circuit | |
| CN105372080B (en) | A kind of tramcar and its embedded tracks Coupled Dynamics test device and method | |
| CN106570299A (en) | Method for determining vehicle-bridge resonance performance curves of high-speed railway steel truss arch bridges | |
| CN206270365U (en) | A kind of Real time auto measure device of train speed and position measurement velocity sensor | |
| Le et al. | Measurements of emission factors and fuel consumption for motorcycles on a chassis dynamometer based on a localized driving cycle | |
| 丁然 et al. | Statistics characters of wheel/rail loads of intercity EMU | |
| CN106596002A (en) | High-speed railway steel truss arch bridge vehicle-bridge resonance curve measuring method | |
| CN106446443A (en) | Identifying method and device for resonant frequency of track fastening system | |
| CN110395351A (en) | Model ship resistance measurement method using active vibration control technology | |
| Chen et al. | The time-frequency analysis of the train axle box acceleration signals using empirical mode decomposition | |
| CN101893467A (en) | Method for measuring fuel consumption of medium and heavy vehicles | |
| CN109798862A (en) | A kind of rail longitudinal irregularity measurement method based on uniaxial gyro |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |