CN107677849B - A kind of wheel wheel footpath modification method, device and equipment - Google Patents
A kind of wheel wheel footpath modification method, device and equipment Download PDFInfo
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- CN107677849B CN107677849B CN201710942410.1A CN201710942410A CN107677849B CN 107677849 B CN107677849 B CN 107677849B CN 201710942410 A CN201710942410 A CN 201710942410A CN 107677849 B CN107677849 B CN 107677849B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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Abstract
The invention discloses a kind of wheel wheel footpath modification methods, comprising: determines theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；Obtain the multiple groups vibration signal of target wheel；It composes and exists when the practical engagement of the corresponding target wheel of this group of vibration signal according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum for every group of vibration signal, obtain the practical engagement spectrum of target wheel；According to the comparison result between each practical engagement spectrum of acquisition, when each practical engagement spectrum of target wheel is stablized, according to theory engagement spectrum and each practical engagement spectrum, modifying factor of the wheel footpath compared to fifth wheel of target wheel is determined.Using technical solution provided by the embodiment of the present invention, the modifying factor of wheel in vehicle operation can be obtained, the tach signal for avoiding same vehicle from sharing a fifth wheel causes wheel diameter deviation to influence the technical problems such as tracking sampling precision.The present invention also provides a kind of wheel wheel footpath correcting device and equipment, have relevant art effect.
Description
Technical field
The present invention relates to rail vehicle operational safety monitoring technical fields, more particularly to a kind of wheel wheel footpath amendment side
Method, device and equipment.
Background technique
For rail vehicle, the wheel footpath of wheel is an important indicator, and either new wheel still scraps wheel, is had tight
The requirement of lattice.Such as the to look for novelty wheel footpath of wheel of subway electric bus is 840mm, wearing the wheel footpath lower limit scrapped is 770mm.Due to every
The degree of wear of a wheel in the process of running is different, and wheel tread fault degree is different, and the period difference and rotation for revolving repair wheel are repaired
The factors such as depth difference can make the wheel footpath of each wheel inconsistent.In the actual moving process of vehicle, the wheel of each wheel
Diameter deviation usually can far super related the coaxial of regulation permission, unit-frame and the wheel diameter deviation requirement with vehicle.
Also, even if before rail vehicle operation known wheel wheel footpath, it is in the process of running, snakelike due to vehicle
The factors such as run and shake the head, and will lead to the randomness of the rolling circle of wheel and rail contact, so that wheel in the process of running
Practical wheel footpath constantly change.Fig. 1 is seen, the rolling circle position of the wheel of different location is different, the first rolling circle position 101
The corresponding practical wheel footpath of wheel is different from the corresponding practical wheel footpath of wheel in the second rolling circle position 102.
The wheel wheel footpath of same vehicle is variant, and in part, occasion can cause problems.For example, will lead to Electronic locomotive control
The tach signal that system processed obtains is variant, so that the locomotive of front and back two plays different power, easily causes train
Longitudinal impulse and disconnected hook even result in the big idle running of locomotive, slide greatly.In response to this, processing side in the prior art
Method usually requires before vehicle is run, and determines the wheel footpath of each wheel, but as described above, even if known vehicle runs front vehicle wheel
Wheel footpath, in vehicle operation, the practical wheel footpath of each wheel still can constantly change, still may be due to the reality of wheel
Uncertain, the initiation relevant issues of wheel footpath.It can only be certain by way of this wheel footpath by the way that each wheel is manually obtained ahead of time
Alleviate the problem in degree.
In addition, the wheel footpath difference of wheel, also will affect the accuracy of the device of shared rotary speed information.Such as vehicle is supervised online
In examining system, usually shares a tach signal and carry out rotating-speed tracking sampling and carry out accident analysis, corresponding axis is referred to as to survey
Fast axis, the practical wheel footpath of each wheel in the process of running is different, so that the revolving speed of the shaft of each wheel is compared to velocity measuring shaft
It has differences, and then influences the accuracy of on-line monitoring system.For this technical problem that the wheel footpath difference of wheel causes, mesh
It is preceding also without preferable solution.
In conclusion how vehicle each wheel wheel diameter deviation situation in the process of moving is determined in real time, to carry out vehicle
Wheel footpath amendment is taken turns, is current those skilled in the art technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of wheel wheel footpath modification method, device and equipment.To obtain vehicle operation
In wheel practical wheel footpath compared to the modifying factor of fifth wheel, determine the deviation situation of wheel wheel footpath, avoid rotating-speed tracking
Non- fifth wheel and fifth wheel wheel diameter deviation influence the technical problems such as the detection accuracy of on-line fault monitoring device in sampling process.
In order to solve the above technical problem, the present invention provides following technical solutions:
A kind of wheel wheel footpath modification method, this method comprises:
Determine theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；
Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of the target wheel tests the speed with described
It is identical to take turns corresponding gear train assembly；
For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and the theoretical engagement spectrum, determine
The practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if it is, obtaining being somebody's turn to do for the target wheel
Practical engagement spectrum；
According to the comparison result between each practical engagement spectrum of acquisition, determine that each of the target wheel described actually nibbles
Whether stable close spectrum；
If it is, determining the wheel of the target wheel according to the theoretical engagement spectrum and each practical engagement spectrum
Modifying factor of the diameter compared to the fifth wheel.
Preferably, described that spectrum is engaged according to the theoretical engagement spectrum and each reality, determine the target wheel
Modifying factor of the wheel footpath compared to the fifth wheel, comprising:
Determine the arithmetic average of each practical engagement spectrum；
By the theoretical engagement spectrum divided by the arithmetic average, modifying factor is determined.
Preferably, it after modifying factor of the wheel footpath compared to the fifth wheel of the determination target wheel, also wraps
It includes:
Determine the wheel footpath of the fifth wheel；
According to the modifying factor and the wheel footpath of the fifth wheel, the wheel footpath of the target wheel is determined.
Preferably, the result of spectrum analysis according to this group of vibration signal and the theoretical engagement spectrum, determine that the group is shaken
The practical engagement spectrum of the dynamic corresponding target wheel of signal whether there is, comprising:
According to the result of spectrum analysis of this group of vibration signal, spectrum is engaged with the theory in preset range by determining
Spectral line in, if there are the spectral lines that amplitude is higher than default amplitude, determine the reality of the corresponding target wheel of this group of vibration signal
Border engagement spectrum whether there is.
Preferably, the comparison result between each practical engagement spectrum according to acquisition, determines the target wheel
Each practical engagement spectrum it is whether stable, comprising:
Determine the maximum value and minimum value in each practical engagement spectrum；
According to the maximum value and the difference of the minimum value, it is based on preset difference threshold, determines the target wheel
Each practical engagement spectrum it is whether stable.
Preferably, the multiple groups vibration signal for obtaining target wheel, comprising:
When the circle number of continuous rotation is N times of the preset rotating cycle to the fifth wheel in the first duration, obtain
Obtain the N group vibration signal of the target wheel in first duration, wherein the N is positive integer.
A kind of wheel wheel footpath correcting device, the device include:
Theory engagement spectrum determining module, for determining theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；
Vibration signal obtains module, for obtaining the multiple groups vibration signal of target wheel, wherein the corresponding tooth of the target wheel
It is identical to take turns transmission system gear train assembly corresponding with the fifth wheel；
There are determining modules for practical engagement spectrum, for being directed to every group of vibration signal, according to the frequency spectrum of this group of vibration signal point
Result and the theoretical engagement spectrum are analysed, determines that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is,
If it is, the practical engagement for obtaining the target wheel composes and enters stability determining module；
The stability determining module determines institute for the comparison result between each practical engagement spectrum according to acquisition
Whether each practical engagement spectrum for stating target wheel is stable, if it is, into target wheel wheel footpath correction module；
The target wheel wheel footpath correction module, for being composed according to the theory engagement spectrum and each practical engagement,
Determine modifying factor of the wheel footpath compared to the fifth wheel of the target wheel.
Preferably, the target wheel wheel footpath correction module, including following submodule:
Arithmetic average determines submodule, for determining the arithmetic average of each practical engagement spectrum；
Modifying factor determines submodule, for the theoretical engagement spectrum divided by the arithmetic average, to be determined modifying factor
Son.
Preferably, the vibration signal obtains module, is specifically used for:
When the circle number of continuous rotation is N times of the preset rotating cycle to the fifth wheel in the first duration, obtain
Obtain the N group vibration signal of the target wheel in first duration, wherein the N is positive integer.
A kind of wheel wheel footpath corrective, the equipment include:
Memory, for storing computer program；
Processor, for executing the computer program to realize: determining reason of the fifth wheel based on preset rotating cycle
It is composed by engagement；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of the target wheel tests the speed with described
It is identical to take turns corresponding gear train assembly；For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and institute
Theoretical engagement spectrum is stated, determines that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if it is, obtaining
Obtain practical engagement spectrum of the target wheel；According to the comparison result between each practical engagement spectrum of acquisition, the mesh is determined
Whether each practical engagement spectrum of mark wheel is stable；If it is, according to the theoretical engagement spectrum and each reality
Engagement spectrum, determines modifying factor of the wheel footpath compared to the fifth wheel of the target wheel.
Using technical solution provided by the embodiment of the present invention, determine that fifth wheel is nibbled based on the theory of preset rotating cycle
Close spectrum；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel gear corresponding with fifth wheel
Transmission system is identical；It is determined for every group of vibration signal according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum
The practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if it is, obtaining the practical engagement of target wheel
Spectrum；According to the comparison result between each practical engagement spectrum of acquisition, determine whether each practical engagement spectrum of target wheel is stable；
If it is, determining amendment of the wheel footpath compared to fifth wheel of target wheel according to theory engagement spectrum and each practical engagement spectrum
The factor.
Inventor's discovery: when fifth wheel rotates preset rotating cycle in the process of running, due to the number of teeth of gear wheel
Fixed, the theoretical engagement spectrum based on fifth wheel is equivalent to the theoretical engagement spectrum of target wheel.The corresponding gear train assembly of target wheel
Gear train assembly corresponding with fifth wheel is identical, if the wheel footpath of target wheel practical wheel footpath in the process of running and fifth wheel
Identical, then the circle number of the practical rotation of target wheel will be identical with fifth wheel, that is, be equal to preset rotating cycle.Work as mesh
When mark takes turns the wheel footpath difference of practical wheel footpath and fifth wheel in the process of running, the circle number rotated within the same period will be with survey
Speed wheel is different, correspondingly, the practical engagement spectrum of target wheel would be different from that the theoretical engagement spectrum of fifth wheel.So, it is only necessary to obtain
The practical engagement spectrum of target wheel in the process of running is obtained, further according to the theoretical engagement spectrum of fifth wheel, so that it may determine target wheel phase
Compared with the modifying factor of fifth wheel, i.e. the wheel footpath modifying factor of target wheel.Further, if obtaining the wheel footpath of fifth wheel, root
According to the wheel footpath modifying factor of target wheel, the actual wheel footpath of target wheel in the process of running can also be obtained.And obtain target wheel
Practical engagement spectrum, it is only necessary to obtain the vibration signal of target wheel, and carry out the spectrum analysis of vibration signal.
After the multiple groups vibration signal for obtaining target wheel, spectrum analysis is carried out to every group of vibration signal and obtains corresponding frequency
Spectrum analysis is as a result, be directed to every group of vibration signal, according to theory engagement spectrum, when in the corresponding result of spectrum analysis of this group of vibration signal
Time spectrum is engaged in the presence of practical, then can determine a practical engagement spectrum of target wheel, frequency spectrum is being carried out to each group of vibration signal
After analysis, multiple practical engagement spectrums of available target wheel.When each practical engagement spectrum for determining target wheel is stablized, then
According to each practical engagement spectrum of acquisition and theoretical engagement spectrum, so that it may which the wheel footpath modifying factor for determining target wheel is determined
The wheel footpath modifying factor of target wheel is just solved in the prior art since the practical wheel footpath of target wheel constantly changes, can not be obtained
The technical issues of accurate rotating-speed tracking sampled signal.Scheme through the invention obtains mesh in vehicle operation in real time
The wheel footpath modifying factor for marking wheel is able to solve same vehicle and shares the tach signal of a fifth wheel and cause wheel diameter deviation, influences to track
The technical problems such as sampling precision.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
The rolling circle position view of the wheel of different location when Fig. 1 is vehicle operation in the present invention；
Fig. 2 is a kind of implementation flow chart of wheel wheel footpath modification method in the present invention；
Fig. 3 is the original waveform figure of one group of vibration signal in a kind of specific embodiment of the invention；
Fig. 4 is the result of spectrum analysis schematic diagram of one group of vibration signal in a kind of specific embodiment of the invention；
Fig. 5 is the partial enlargement diagram of Fig. 4；
Fig. 6 is a kind of structural schematic diagram of wheel wheel footpath correcting device in the present invention；
Fig. 7 is a kind of structural schematic diagram of wheel wheel footpath corrective in the present invention.
Specific embodiment
Core of the invention is to provide a kind of wheel wheel footpath modification method, can obtain the wheel in vehicle operation
Practical wheel diameter deviation, avoid that the wheel footpath difference of same vehicle causes such as train fault, influence the precision of on-line fault monitoring device
Etc. technical problems.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 2, this method includes following step for a kind of implementation flow chart of wheel wheel footpath modification method in the present invention
It is rapid:
S201: theoretical engagement spectrum of the fifth wheel based on preset rotating cycle is determined.
Fifth wheel can be any one wheel in power car, be known as testing the speed by the corresponding axis of fifth wheel in the application
The gear-box for driving velocity measuring shaft is known as the corresponding gear train assembly of the fifth wheel by axis.Theory engagement spectrum is that fifth wheel is based on
The engagement of preset rotating cycle is composed, specifically, what is indicated is the nibbling based on preset rotating cycle of gear where velocity measuring shaft
Close spectrum clef, the gear where velocity measuring shaft refers to gear wheel corresponding with velocity measuring shaft, i.e., hereinbefore it is so-called correspond to test the speed
Gear wheel in the gear train assembly of wheel.Theoretical engagement spectrum: PNH=roud (DC*PFN) can be determined with following formula.Its
In, PNH representation theory engagement spectrum；DC is the number of teeth of the corresponding gear wheel of velocity measuring shaft；PFN is that the axis curing characteristic of fifth wheel is composed
Number；Roud () indicates round.
The value of axis curing characteristic clef PFN can be understood as preset rotating cycle.Specifically, when to fifth wheel carry out with
When track samples, fifth wheel every rotation one sampled signal of acquisition in 1/X weeks, then when fifth wheel and the corresponding velocity measuring shaft rotation of fifth wheel
At one week, X sampled signal can be obtained.PFN can be expressed as PFN=A/X, wherein A is to obtain in certain sampling time section
Sampled point total number, by A divided by X, the axis curing characteristic clef of available fifth wheel, that is, when corresponding sampling
Between in section fifth wheel rotation circle number.For example, when carrying out revolving speed sampling to fifth wheel, fifth wheel per revolution sampling 400
A, when the number of the sampled point of acquisition is 8192, PFN 20.48 can determine that fifth wheel has rotated 20.48 circles.When
So, preset rotating cycle can be set and be adjusted according to the actual situation, have no effect on implementation of the invention.It can pass through
The sampled point for obtaining predetermined number, so that the rotating cycle of fifth wheel is identical as preset rotating cycle.Such as the every rotation of fifth wheel
One circle can sample 400 points, when preset rotating cycle is 20 circle, then can obtain 8000 sampled points.Certainly, usually
For, which to adjust preset rotating cycle, then can be based on according to the number of the sampled point obtained in certain period of time
Circle number determines the theoretical engagement spectrum of fifth wheel.
With DC=60, for PFN=20.48, PNH=roud (60*20.48)=1229 indicates the number of teeth for working as gear wheel
It is 60, when the circle number of fifth wheel rotation is preset 20.48 circle, the theoretical engagement spectrum of fifth wheel is 1229.It should be pointed out that
The theoretical engagement spectrum of fifth wheel is equivalent to the theoretical engagement spectrum of target wheel.
S202: the multiple groups vibration signal of target wheel is obtained, wherein the corresponding gear train assembly of target wheel and fifth wheel pair
The gear train assembly answered is identical.
The shaft connecting with target wheel is known as target axis, the corresponding gear train assembly of target wheel is corresponding with fifth wheel
Gear train assembly is identical.The gear-box of the gear-box and driving velocity measuring shaft that drive target axis can be the same gear-box, make
It is identical to obtain the corresponding gear train assembly of target wheel gear train assembly corresponding with fifth wheel.Target wheel can be in power car
With fifth wheel with any one wheel of vehicle.
The multiple groups vibration signal of target wheel can be obtained by rotating-speed tracking sampling technique.One group of vibration signal can be claimed
For a sample, in practical applications, the sample strip number specifically obtained can be set and be adjusted according to the actual situation.It can be with
The multiple groups vibration signal of target wheel is obtained by sensor.Sensor may be mounted at the engagement that can arbitrarily sense target wheel
The position of spectrum is such as mounted in the bearing block bearing area of gear housing.It can be as shown in fig.3, for a kind of tool of the invention
The original waveform figure of one group of vibration signal in body embodiment.The abscissa of coordinate system C1 indicates the serial number of sampled point in Fig. 3, indulges and sits
Mark indicates vibration amplitude, unit g.
After the multiple groups vibration signal for obtaining target wheel, the operation of step S203 can be carried out.
S203: being directed to every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum, determines
The practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is.
Fig. 4 is seen, is the result of spectrum analysis schematic diagram of one group of vibration signal in a kind of specific embodiment of the invention,
The abscissa of coordinate system C2 indicates spectral line serial number, and ordinate indicates corresponding amplitude.Obtain target wheel multiple groups vibration signal it
Afterwards, for every group of vibration signal, spectrum analysis is carried out to this group of vibration signal, according to the result of spectrum analysis of this group of vibration signal
With theory engagement spectrum, determine that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is.
It should be noted that every group of vibration signal is directed to, when determining actually nibbling for the corresponding target wheel of this group of vibration signal
In the presence of closing spectrum, S204 can be entered step, when the practical engagement of one group or the corresponding target wheel of multiple groups vibration signal is composed not
In the presence of, it can be with return step S202.The corresponding mesh of this group of vibration signal can be determined when obtaining one group of vibration signal every time
The practical engagement spectrum of mark wheel whether there is, and can also determine the vibration signal pair of respective sets after obtaining multiple groups vibration signal
The practical engagement spectrum for the target wheel answered whether there is.It, can also be with that is, step S202 and step S203 can be carried out simultaneously
Successively carry out.
By taking 10 groups of vibration signals for obtaining target wheel as an example, wherein after thering are 3 groups of vibration signals to carry out spectrum analysis, it is corresponding
Target wheel practical engagement spectrum be not present, then can with return step S202 with continue obtain target wheel vibration signal.It needs
, it is noted that in the specific implementation, can choose and continue to obtain 3 groups of vibration signals, when 3 groups of vibration signals for continuing to obtain are corresponding
Target wheel practical engagement spectrum in the presence of, and 7 groups of vibration signals before this constitute 10 groups of vibration signals, and carry out subsequent step
Suddenly.Also it can choose and continue to obtain 10 groups of vibration signals, i.e., give up obtain before this 7 groups of vibration signals.The choosing of above scheme
It takes, does not influence implementation of the invention.
S204: the practical engagement spectrum of target wheel is obtained.
It can be obtained in the presence of the practical engagement spectrum of the corresponding target wheel of this group of vibration signal for every group of vibration signal
Obtain practical engagement spectrum of target wheel.For example, preset rotating cycle is 30 circles, when fifth wheel 30 circle of rotation, tested the speed
Whole vibration signals of target wheel in this period of 30 circle of wheel rotation, as one group of vibration signal.When 10 samples of needs
When, that is, when needing 10 groups of vibration signals, this 270 circle can be rotated in fifth wheel when fifth wheel continues for 270 circle of rotation
In period, 9 groups of vibration signals of target wheel can be successively obtained, 10 groups of vibration signals altogether are subjected to spectrum analysis, are obtained
To corresponding result of spectrum analysis, in the presence of the practical engagement spectrum of this corresponding target wheel of 10 groups of vibration signals is equal, Ke Yiyi
The secondary practical engagement spectrum of 10 for obtaining target wheel.
According to each group of vibration signal, after the practical engagement spectrum for obtaining the corresponding target wheel of the group, can be walked
The operation of rapid S205.
S205: according to the comparison result between each practical engagement spectrum of acquisition, each practical engagement of target wheel is determined
It whether stable composes.
According to the comparison result between each practical engagement spectrum of acquisition, determine whether each reality of target wheel engages spectrum
Stablize.Since theory engagement spectrum is determined by the number of teeth and preset rotating cycle of gear wheel, in each for obtaining target wheel
Practical engagement time spectrum, the circle number for being all based on fifth wheel rotation reach preset circle number, the i.e. theoretical engagement spectrum based on fifth wheel,
And the theoretical engagement spectrum of fifth wheel is the equal of that the theoretical of target wheel engages spectrum, therefore each reality of the target wheel obtained
The corresponding theoretical engagement spectrum of engagement spectrum is all fixed and invariable.It can be according to the comparison knot between each practical engagement spectrum of acquisition
Fruit determines whether the practical engagement spectrum of target wheel is stable.Such as 6 practical engagement spectrums of target wheel are obtained altogether, it is followed successively by
1228,1229,1230,1229,1228,1230, can determine that the average values of this 6 practical engagement spectrums are 1229, successively by this 6
A practical engagement spectrum is compared with average value, when the error between each practical engagement spectrum and the average value is in error model
It in enclosing, can determine that the practical engagement spectrum of target wheel is stablized, otherwise determine that the practical engagement spectrum of target wheel is unstable.When determining mesh
The practical engagement of mark wheel is composed when stablizing, and can enter step S206, can be with when the practical engagement for determining target wheel composes unstable
Return step S202.
It should be pointed out that can also have other determine target wheels practical engagement spectrum whether stable mode, such as
In a kind of specific embodiment of the invention, step S205 may include following two step:
Step 1: the maximum value and minimum value in each practical engagement spectrum are determined；
Step 2: according to maximum value and the difference of minimum value, it is based on preset difference threshold, determines each of target wheel
Whether practical engagement spectrum is stable.
After obtaining each practical engagement spectrum, the maximum value and minimum value in each practical engagement spectrum are determined, it will most
Big value is compared with the difference of minimum value with preset difference threshold, when the difference is less than or equal to preset difference threshold,
It can determine that the practical engagement spectrum of target wheel is stablized, when the difference is greater than preset difference threshold, can determine target wheel
Practical engagement spectrum is unstable.Certainly, difference threshold can be set and be adjusted according to the actual situation, be had no effect on of the invention
Implement.Using this kind of specific embodiment of the invention, maximum value and minimum value in each practical engagement spectrum are directly taken out
It is poor to make, and is compared compared to the practical engagement spectrum for obtaining each with the average value of practical engagement spectrum, calculation amount is smaller, special
It is not to compose more occasion in the practical engagement of the target wheel of acquisition, can more quickly determines the practical engagement spectrum of target wheel
It is whether stable.
S206: according to theory engagement spectrum and each practical engagement spectrum, determine the wheel footpath of target wheel compared to fifth wheel
Modifying factor.
After each practical engagement spectrum for determining target wheel is stablized, each it can nibble according to theory engagement spectrum and actually
Spectrum is closed, determines modifying factor of the wheel footpath compared to fifth wheel of target wheel, the wheel footpath modifying factor of target wheel can also be become.Really
It includes the nothing since the practical wheel footpath of target wheel constantly changes that the wheel footpath modifying factor for making target wheel, which just solves in the prior art,
Method obtains accurate rotating-speed tracking sampled signal the technical issues of interior.
Using technical solution provided by the embodiment of the present invention, determine that fifth wheel is nibbled based on the theory of preset rotating cycle
Close spectrum；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel gear corresponding with fifth wheel
Transmission system is identical；It is determined for every group of vibration signal according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum
The practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if it is, obtaining the practical engagement of target wheel
Spectrum；According to the comparison result between each practical engagement spectrum of acquisition, determine whether each practical engagement spectrum of target wheel is stable；
If it is, determining amendment of the wheel footpath compared to fifth wheel of target wheel according to theory engagement spectrum and each practical engagement spectrum
The factor.
Inventor's discovery: when fifth wheel rotates preset rotating cycle in the process of running, due to the number of teeth of gear wheel
Fixed, the theoretical engagement spectrum based on fifth wheel is equivalent to the theoretical engagement spectrum of target wheel.The corresponding gear train assembly of target wheel
Gear train assembly corresponding with fifth wheel is identical, if the wheel footpath of target wheel practical wheel footpath in the process of running and fifth wheel
Identical, then the circle number of the practical rotation of target wheel will be identical with fifth wheel, that is, be equal to preset rotating cycle.Work as mesh
When mark takes turns the wheel footpath difference of practical wheel footpath and fifth wheel in the process of running, the circle number rotated within the same period will be with survey
Speed wheel is different, correspondingly, the practical engagement spectrum of target wheel would be different from that the theoretical engagement spectrum of fifth wheel.So, it is only necessary to obtain
The practical engagement spectrum of target wheel in the process of running is obtained, further according to the theoretical engagement spectrum of fifth wheel, so that it may determine target wheel phase
Compared with the modifying factor of fifth wheel, i.e. the wheel footpath modifying factor of target wheel.Further, if obtaining the wheel footpath of fifth wheel, root
According to the wheel footpath modifying factor of target wheel, the actual wheel footpath of target wheel in the process of running can also be obtained.And obtain target wheel
Practical engagement spectrum, it is only necessary to obtain the vibration signal of target wheel, and carry out the spectrum analysis of vibration signal.
After the multiple groups vibration signal for obtaining target wheel, spectrum analysis is carried out to every group of vibration signal and obtains corresponding frequency
Spectrum analysis is as a result, be directed to every group of vibration signal, according to theory engagement spectrum, when in the corresponding result of spectrum analysis of this group of vibration signal
Time spectrum is engaged in the presence of practical, then can determine a practical engagement spectrum of target wheel, frequency spectrum is being carried out to each group of vibration signal
After analysis, multiple practical engagement spectrums of available target wheel.When each practical engagement spectrum for determining target wheel is stablized, then
According to each practical engagement spectrum of acquisition and theoretical engagement spectrum, so that it may which the wheel footpath modifying factor for determining target wheel is determined
The wheel footpath modifying factor of target wheel is just solved in the prior art since the practical wheel footpath of target wheel constantly changes, can not be obtained
The technical issues of accurate rotating-speed tracking sampled signal.Scheme through the invention obtains mesh in vehicle operation in real time
The wheel footpath modifying factor for marking wheel is able to solve same vehicle and shares the tach signal of a fifth wheel and cause wheel diameter deviation, influences to track
The technical problems such as sampling precision.
In a kind of specific embodiment of the invention, step S206 includes following two step:
First step: the arithmetic average of each practical engagement spectrum is determined；
Second step: by theory engagement spectrum divided by arithmetic average, modifying factor is determined.
After each practical engagement spectrum for determining target wheel is stablized, the arithmetic average of each practical engagement spectrum is determined,
Theory engagement spectrum is determined into modifying factor divided by the arithmetic average again.
In a kind of specific embodiment of the invention, further, target wheel can also be determined according to modifying factor
Wheel footpath.Specifically, can be followed the steps below after above-mentioned second step:
Step 1: the wheel footpath of fifth wheel is determined；
Step 2: according to modifying factor and the wheel footpath of fifth wheel, the wheel footpath of target wheel is determined.
The wheel footpath of target wheel can be determined according to modifying factor and the wheel footpath of fifth wheel.Specifically, can be according to amendment
The product of the factor and the wheel footpath of fifth wheel determines the wheel footpath of target wheel.For example, working as wheel footpath=885mm of fifth wheel, modifying factor
When=1229/1230=0.99919, wheel footpath=0.99919*885=884.28mm of target wheel can be determined.Using the present invention
This kind of specific embodiment, the wheel footpath for the target wheel determined has a very high precision, such as when theory engagement spectrum is 1229
When, the precision of the wheel footpath for the target wheel determined is up to 1/1229, i.e., 0.8 ‰.The wheel footpath for the target wheel determined is that vehicle exists
In operational process, the actual value of the wheel footpath of target wheel.The wheel footpath of fifth wheel can measure acquisition in advance.
In a kind of specific embodiment of the invention, step S202 includes:
When the circle number of continuous rotation is N times of preset rotating cycle to fifth wheel in the first duration, target wheel is obtained
N group vibration signal in the first duration, wherein N is positive integer.
Such as preset rotating cycle be 30 circle when, fifth wheel it is every rotation 30 circle, can obtain fifth wheel rotate this 30 circle
The vibration signal of the target wheel of period, as one group of vibration signal.When the circle number of continuous rotation is fifth wheel in the first duration
At N times of preset rotating cycle, 150 circles of continuous rotation, then can obtain target wheel in this 130 seconds such as in 130 seconds
Whole vibration signals, as 5 groups of vibration signals.Wherein, N is positive integer.
It should be pointed out that the above-mentioned side continuously obtained can be used when obtaining the multiple groups vibration signal of target wheel
Method, can also be in such a way that interval obtains.For example, waiting starting within two seconds to calculate again and survey after obtaining one group of vibration signal
The circle number of the rotation of speed wheel.
In a kind of specific embodiment of the invention, step S203 includes:
According to the result of spectrum analysis of this group of vibration signal, spectrum of the spectrum in preset range is engaged with theory by determining
In line, if there are the spectral lines that amplitude is higher than default amplitude, determine the practical engagement spectrum of the corresponding target wheel of this group of vibration signal
It whether there is.
Preset range and default amplitude can be set and be adjusted according to the actual situation, be had no effect on of the invention
Implement.Fig. 5 is seen, is the partial enlarged view of Fig. 4.For example, can be passed through according to the result of spectrum analysis of this group of vibration signal
The determining spectrum 1229 that engages with theory is in the spectral line within the scope of 8 spectral lines, if the spectral line there are amplitude higher than default amplitude,
Determine that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is.Specifically, can determine in this preset range
The average amplitude of each spectral line determine the spectral line when the corresponding amplitude of a certain spectral line is at least twice of average amplitude
It is composed for the practical engagement of target wheel, i.e. the practical engagement of the corresponding target wheel of this group of vibration signal, which is composed, to be existed.Such as spectral line in Fig. 5
1230 corresponding amplitudes are 0.22g, have been more than twice of average amplitude, can determine that the practical engagement spectrum of target wheel exists, be
1230。
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of wheel wheel footpath correcting devices, hereafter
The wheel wheel footpath correcting device of description can correspond to each other reference with above-described wheel wheel footpath modification method.
Shown in Figure 6, for a kind of structural schematic diagram of wheel wheel footpath correcting device in the present invention, which includes following
Module:
Theory engagement spectrum determining module 601, for determining theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；
Vibration signal obtains module 602, for obtaining the multiple groups vibration signal of target wheel, wherein the corresponding tooth of target wheel
It is identical to take turns transmission system gear train assembly corresponding with fifth wheel；
There are determining modules 603 for practical engagement spectrum, for being directed to every group of vibration signal, according to the frequency spectrum of this group of vibration signal
Result and theoretical engagement spectrum are analyzed, determines that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if so,
The practical engagement for then obtaining target wheel composes and enters stability determining module 604；
Stability determining module 604 determines target for the comparison result between each practical engagement spectrum according to acquisition
Whether each practical engagement spectrum of wheel is stable, if it is, into target wheel wheel footpath correction module 605；
Target wheel wheel footpath correction module 605, for determining target wheel according to theory engagement spectrum and each practical engagement spectrum
Wheel footpath compared to fifth wheel modifying factor.
Using device provided by the embodiment of the present invention, theory engagement of the fifth wheel based on preset rotating cycle is determined
Spectrum；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel gear corresponding with fifth wheel passes
Dynamic system is identical；For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum, determining should
The practical engagement spectrum of the corresponding target wheel of group vibration signal whether there is, if it is, the practical engagement spectrum for obtaining target wheel；
According to the comparison result between each practical engagement spectrum of acquisition, determine whether each practical engagement spectrum of target wheel is stable；Such as
Fruit is, then according to theory engagement spectrum and each practical engagement spectrum, to determine modifying factor of the wheel footpath compared to fifth wheel of target wheel
Son.
After the multiple groups vibration signal for obtaining target wheel, spectrum analysis is carried out to every group of vibration signal and obtains corresponding frequency
Spectrum analysis is as a result, be directed to every group of vibration signal, according to theory engagement spectrum, when in the corresponding result of spectrum analysis of this group of vibration signal
Time spectrum is engaged in the presence of practical, then can determine a practical engagement spectrum of target wheel, frequency spectrum is being carried out to each group of vibration signal
After analysis, multiple practical engagement spectrums of available target wheel.When each practical engagement spectrum for determining target wheel is stablized, then
According to each practical engagement spectrum of acquisition and theoretical engagement spectrum, so that it may which the wheel footpath modifying factor for determining target wheel is determined
The wheel footpath modifying factor of target wheel is just solved in the prior art since the practical wheel footpath of target wheel constantly changes, can not be obtained
The technical issues of accurate rotating-speed tracking sampled signal.Scheme through the invention obtains mesh in vehicle operation in real time
The wheel footpath modifying factor for marking wheel is able to solve same vehicle and shares the tach signal of a fifth wheel and cause wheel diameter deviation, influences to track
The technical problems such as sampling precision.
In a kind of specific embodiment of the invention, target wheel wheel footpath correction module 605, including following submodule:
Arithmetic average determines submodule, for determining the arithmetic average of each practical engagement spectrum；
Modifying factor determines submodule, for theory engagement spectrum divided by arithmetic average, to be determined modifying factor.
In a kind of specific embodiment of the invention, further includes target wheel wheel footpath determining module, is specifically used for:
Determine the wheel footpath of fifth wheel；
According to modifying factor and the wheel footpath of fifth wheel, the wheel footpath of target wheel is determined.
In a kind of specific embodiment of the invention, there are determining modules 603 to be specifically used for for practical engagement spectrum:
According to the result of spectrum analysis of this group of vibration signal, spectrum of the spectrum in preset range is engaged with theory by determining
In line, if there are the spectral lines that amplitude is higher than default amplitude, determine the practical engagement spectrum of the corresponding target wheel of this group of vibration signal
It whether there is.
In a kind of specific embodiment of the invention, stability determining module 604 is specifically used for:
Determine the maximum value and minimum value in each practical engagement spectrum；
According to maximum value and the difference of minimum value, it is based on preset difference threshold, determines that each of target wheel actually nibbles
Whether stable close spectrum.
In a kind of specific embodiment of the invention, vibration signal obtains module 602, is specifically used for:
When the circle number of continuous rotation is N times of preset rotating cycle to fifth wheel in the first duration, target wheel is obtained
N group vibration signal in the first duration, wherein N is positive integer.
Corresponding to above method and Installation practice, the embodiment of the invention also provides a kind of amendments of wheel wheel footpath to set
Standby, wheel wheel footpath corrective described below can correspond to each other ginseng with above-described wheel wheel footpath modification method and device
According to.
Shown in Figure 7, for a kind of structural schematic diagram of wheel wheel footpath corrective in the present invention, which includes:
Memory 701, for storing computer program；
Processor 702, for executing computer program to realize: determining theory of the fifth wheel based on preset rotating cycle
Engagement spectrum；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel tooth corresponding with fifth wheel
It is identical to take turns transmission system；For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and theoretical engagement spectrum, really
The practical engagement spectrum of the fixed corresponding target wheel of this group of vibration signal whether there is, if it is, this for obtaining target wheel practical is nibbled
Close spectrum；According to the comparison result between each practical engagement spectrum of acquisition, determine whether each practical engagement spectrum of target wheel is steady
It is fixed；If it is, determining wheel footpath the repairing compared to fifth wheel of target wheel according to theory engagement spectrum and each practical engagement spectrum
Positive divisor.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. a kind of wheel wheel footpath modification method characterized by comprising
Determine theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；
Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel and the fifth wheel pair
The gear train assembly answered is identical；
For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and the theoretical engagement spectrum, the group is determined
The practical engagement spectrum of the corresponding target wheel of vibration signal whether there is, if it is, obtaining the reality of the target wheel
Engagement spectrum；
According to the comparison result between each practical engagement spectrum of acquisition, each practical engagement spectrum of the target wheel is determined
It is whether stable；
If it is, determining the wheel footpath phase of the target wheel according to the theoretical engagement spectrum and each practical engagement spectrum
Compared with the modifying factor of the fifth wheel；
The theoretical engagement spectrum is that the fifth wheel is composed based on the engagement of preset rotating cycle, the tooth where being velocity measuring shaft of expression
Clef is composed in the engagement based on preset rotating cycle of wheel；
When the practical engagement spectrum is that the fifth wheel rotates the preset rotating cycle, pass through the vibration of the target wheel
The engagement spectrum that dynamic signal obtains.
2. the method according to claim 1, wherein described according to the theoretical engagement spectrum and each reality
Border engagement spectrum, determines modifying factor of the wheel footpath compared to the fifth wheel of the target wheel, comprising:
Determine the arithmetic average of each practical engagement spectrum；
By the theoretical engagement spectrum divided by the arithmetic average, modifying factor is determined.
3. according to the method described in claim 2, it is characterized in that, the determination target wheel wheel footpath compared to described
After the modifying factor of fifth wheel, further includes:
Determine the wheel footpath of the fifth wheel；
According to the modifying factor and the wheel footpath of the fifth wheel, the wheel footpath of the target wheel is determined.
4. the method according to claim 1, wherein the result of spectrum analysis according to this group of vibration signal and
The theoretical engagement spectrum determines that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, comprising:
According to the result of spectrum analysis of this group of vibration signal, by determining the spectrum for engaging spectrum with the theory in preset range
In line, if there are the spectral lines that amplitude is higher than default amplitude, determine actually nibbling for the corresponding target wheel of this group of vibration signal
Closing spectrum whether there is.
5. the method according to claim 1, wherein between each practical engagement spectrum according to acquisition
Comparison result, determine whether each practical engagement spectrum of the target wheel stable, comprising:
Determine the maximum value and minimum value in each practical engagement spectrum；
According to the maximum value and the difference of the minimum value, it is based on preset difference threshold, determines each of the target wheel
Whether a practical engagement spectrum is stable.
6. method according to any one of claims 1 to 5, which is characterized in that the multiple groups for obtaining target wheel vibrate letter
Number, comprising:
When the circle number of continuous rotation is N times of the preset rotating cycle to the fifth wheel in the first duration, institute is obtained
State the N group vibration signal of the target wheel in first duration, wherein the N is positive integer.
7. a kind of wheel wheel footpath correcting device characterized by comprising
Theory engagement spectrum determining module, for determining theoretical engagement spectrum of the fifth wheel based on preset rotating cycle；
Vibration signal obtains module, for obtaining the multiple groups vibration signal of target wheel, wherein the corresponding gear of the target wheel passes
Dynamic system gear train assembly corresponding with the fifth wheel is identical；
There are determining modules for practical engagement spectrum, for being directed to every group of vibration signal, according to the spectrum analysis knot of this group of vibration signal
Fruit and the theoretical engagement spectrum, determine that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if
It is then to obtain practical engagement spectrum of the target wheel and enter stability determining module；
The stability determining module determines the mesh for the comparison result between each practical engagement spectrum according to acquisition
Whether each practical engagement spectrum of mark wheel is stable, if it is, into target wheel wheel footpath correction module；
The target wheel wheel footpath correction module, for determining according to the theoretical engagement spectrum and each practical engagement spectrum
Modifying factor of the wheel footpath of the target wheel compared to the fifth wheel；
The theoretical engagement spectrum is that the fifth wheel is composed based on the engagement of preset rotating cycle, the tooth where being velocity measuring shaft of expression
Clef is composed in the engagement based on preset rotating cycle of wheel；
When the practical engagement spectrum is that the fifth wheel rotates the preset rotating cycle, pass through the vibration of the target wheel
The engagement spectrum that dynamic signal obtains.
8. device according to claim 7, which is characterized in that the target wheel wheel footpath correction module, including following submodule
Block:
Arithmetic average determines submodule, for determining the arithmetic average of each practical engagement spectrum；
Modifying factor determines submodule, for the theoretical engagement spectrum divided by the arithmetic average, to be determined modifying factor.
9. device according to claim 7 or 8, which is characterized in that the vibration signal obtains module, is specifically used for:
When the circle number of continuous rotation is N times of the preset rotating cycle to the fifth wheel in the first duration, institute is obtained
State the N group vibration signal of the target wheel in first duration, wherein the N is positive integer.
10. a kind of wheel wheel footpath corrective characterized by comprising
Memory, for storing computer program；
Processor, for executing the computer program to realize: determining that fifth wheel is nibbled based on the theory of preset rotating cycle
Close spectrum；Obtain the multiple groups vibration signal of target wheel, wherein the corresponding gear train assembly of target wheel and the fifth wheel pair
The gear train assembly answered is identical；For every group of vibration signal, according to the result of spectrum analysis of this group of vibration signal and the reason
It is composed by engagement, determines that the practical engagement spectrum of the corresponding target wheel of this group of vibration signal whether there is, if it is, obtaining institute
State the practical engagement spectrum of target wheel；According to the comparison result between each practical engagement spectrum of acquisition, the target wheel is determined
Each practical engagement spectrum it is whether stable；If it is, according to the theoretical engagement spectrum and each practical engagement
Spectrum, determines modifying factor of the wheel footpath compared to the fifth wheel of the target wheel；
The theoretical engagement spectrum is that the fifth wheel is composed based on the engagement of preset rotating cycle, the tooth where being velocity measuring shaft of expression
Clef is composed in the engagement based on preset rotating cycle of wheel；
When the practical engagement spectrum is that the fifth wheel rotates the preset rotating cycle, pass through the vibration of the target wheel
The engagement spectrum that dynamic signal obtains.
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| CN110861678B (en) * | 2019-11-27 | 2021-03-30 | 通号城市轨道交通技术有限公司 | Train wheel diameter checking method and device |
| CN110979403B (en) * | 2019-12-16 | 2021-07-16 | 中铁工程机械研究设计院有限公司 | Wheel diameter compensation method for suspension type rail train air tire |
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| JPH06123608A (en) * | 1992-10-12 | 1994-05-06 | Mitsubishi Electric Corp | Wheel measuring device |
| RU2112679C1 (en) * | 1996-09-05 | 1998-06-10 | Локомотивное депо Лобня Московской железной дороги | Device for measuring diameter of wheels of rail vehicles |
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