CN207227503U - A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion - Google Patents
A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion Download PDFInfo
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- CN207227503U CN207227503U CN201721166793.XU CN201721166793U CN207227503U CN 207227503 U CN207227503 U CN 207227503U CN 201721166793 U CN201721166793 U CN 201721166793U CN 207227503 U CN207227503 U CN 207227503U
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Abstract
Card, analog line driver, vibrator, acceleration transducer group, charge amplifier, oscillograph, data collecting card, support device occur for the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion, including master system, random waveform；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；Master system includes the acceleration signal memory module that storage acceleration transducer group collects, data Layer blending algorithm based on variance contribution ratio writes module, acceleration signal Fusion Module, the acceleration signal memory module after fusion, the display module of the acceleration signal after display fusion.The utility model have the advantages that can online, reliably evaluate effect of vibration stress relief.
Description
Technical field
Vibration aging technology field is the utility model is related to, refers in particular to a kind of shaking based on multiple acceleration transducers information fusion
Dynamic timeliness effect online rating system and method.
Technical background
The effect assessment of vibration aging technology is one of key issue of vibration aging technology research.Oscillating aging skill at present
The effect evaluation method of art mainly includes：Parameter curve rating method, residual stress measurement method, precision stability detection method and dynamic
Stress criterion method.
(1) parameter curve rating method
Parameter curve rating method be according to parameter during oscillating aging occur regular variation phenomenon sum up come,
Qualitative evaluation can be carried out to the effect of oscillating aging, interpretational criteria used mainly includes：During oscillating aging during amplitude
Flattening after rising occurs in half interval contour, rise after decline and be then leveled off；The resonance peak ratio of frequency sweep curve shakes after vibration stress relief treatment
Raised before dynamic ageing treatment；The resonant frequency of frequency sweep curve before vibration stress relief treatment than reducing after vibration stress relief treatment；During vibration
Narrow after effect processing before the bandwidth ratio vibration stress relief treatment of frequency sweep curve.Parameter curve rating method be although it is a kind of online, directly perceived,
Quickly and easily method, but during use parameter curve rating method evaluation effect of vibration stress relief, single add only is arranged on workpiece
Velocity sensor, since the acceleration signal that acceleration transducer collection is returned easily is disturbed be subject to extraneous factor, and works as
When acceleration transducer breaks down, it not is the real acceleration signal of workpiece that can cause the signal that collection is returned, and these
The appearance of situation all can cause parameter curve rating method can not accurately and reliably evaluate effect of vibration stress relief.
(2) residual stress measurement method
In order to accurately evaluate the effect of oscillating aging regulation and control residual stress, it is necessary to assess Workpiece vibration timeliness exactly
Front and rear residual stress, but the residual stress distribution situation of workpiece surface, particularly some complex part surface residual stresses
Distribution, be difficult to adopt theoretical calculation method carry out analysis and solution, so using experiment measurement method assessment workpiece
The size of surface residual stress has important practical significance.The experimental measurement method of residual stress mainly includes at present：Damage
Mechanical measurement method and lossless physical measurement method, can quantify assessment Workpiece vibration ageing treatment before and after residual stress.
Mechanical measurement method mainly includes orifice method, slitting method etc.；Physical measurement method mainly includes x-ray method, supercritical ultrasonics technology etc..Remnants should
Power mensuration belongs to offline evaluation method, timeliness effect can only be evaluated after oscillating aging process, and residual
Residue stress mensuration is costly, and time-consuming, is not easy to apply in the fast production scene of rhythm.
(3) precision stability detection method
Precision stability detection method is to evaluate vibration aging technology by detecting the precision after Workpiece vibration ageing treatment
Effect, can to the effect of vibration aging technology carry out qualitative evaluation, mainly including long-term placement precision method, plus dynamic loading after
Precision method etc..Long-term placement precision method is by the long-term placement of workpiece after vibration stress relief treatment and periodic detection workpiece
Dimensional stability, concrete operations flow are detected for the first time when placing 15 days, later detection every 30 days once, total placement
Time should be more than half a year；Precision method is to detect the workpiece after vibration stress relief treatment in dynamic load effect after adding dynamic loading
The variable quantity of dimensional accuracy afterwards.Precision stability detection method falls within qualitatively evaluation method, its medium-term and long-term placement precision method
Time-consuming for test process, there is significant limitation.Although add precision method after dynamic loading quick, to measuring apparatus required precision
High, operating difficulties, it is difficult to popularize.
(4) dynamic stress criterion method
The Chen Ligong professors team of Shanghai Communications University proposes dynamic stress criterion method, because dynamic stress is as oscillating aging
During most important parameter, it is inevitable that there are certain correlation with effect of vibration stress relief.They, which study, finds dynamic stress and remnants
There are quantitative non-linear dependencies between stress release effect, and by mathematical regression analysis and curve matching obtain them it
Between approximate function DP-CH equations, can during oscillating aging on-line checking dynamic stress, real-time quantitative judge vibration
The effect of timeliness.But dynamic stress criterion method is approximate with timeliness effect relation to dynamic stress according to field application experience, is commented
Valency precision is low, and dynamic stress measurement is difficult with assessment, and vibration aging technology national standard not yet provides it, influences in addition
The factor of dynamic stress criterion is very much, such as Fine Texture of Material, external condition.Therefore, dynamic stress criterion method and imperfection, need to also be into
Row is substantial amounts of to be tested to establish dynamic stress criterion form.
Although at present there is the effect evaluation method of some vibration aging technologies, existing evaluation method can not be to shaking
Dynamic timeliness effect carries out online, reliable evaluation, it is therefore necessary to effect of vibration stress relief on-line evaluation method is carried out further
Research and exploration.For deficiency existing for existing effect of vibration stress relief evaluation method, it is based on adding the utility model proposes one kind
The effect of vibration stress relief online rating system and method for velocity sensor information fusion, that is, established and believed based on multiple acceleration transducers
The effect of vibration stress relief online rating system of fusion is ceased, for carrying out online, reliable evaluation to effect of vibration stress relief.
Utility model content
For deficiency existing for existing effect of vibration stress relief evaluation method, the utility model proposes one kind to be based on more acceleration
The effect of vibration stress relief online rating system and method for sensor data fusion, that is, established and melted based on multiple acceleration transducers information
The effect of vibration stress relief online rating system of conjunction, for carrying out online, reliable evaluation to effect of vibration stress relief.
Effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion, including master system,
Random waveform occur card, analog line driver, vibrator, acceleration transducer group, charge amplifier, oscillograph, data collecting card,
Support device；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
Card output amplitude and the independent and continuously adjustable sinusoidal excitation of frequency occur for master system control random waveform
Signal；The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator, driving vibrator production via analog line driver
Raw vibration；
Acceleration transducer in acceleration transducer group is installed on workpiece, and the acceleration in acceleration transducer group passes
The input channel of sensor and charge amplifier connects, and the output channel of charge amplifier is connected with oscillograph, oscillograph and data
Capture card connects, and data collecting card is connected with master system；
Master system includes the acceleration signal memory module that storage acceleration transducer group collects, based on variance tribute
The data Layer blending algorithm for offering rate writes module, and acceleration signal Fusion Module, the acceleration signal memory module after fusion, shows
Show the display module of the acceleration signal after fusion.
Further, acceleration transducer is piezoelectric acceleration transducer.
Further, support device is flexible member.
Further, the acceleration transducer number S included in acceleration sensing group is positive integer, and S >=3.
The technical concept of the utility model is：By master system, random waveform occur card, analog line driver, vibrator,
Acceleration transducer group, charge amplifier, oscillograph, data collecting card and support device composition are based on multiple acceleration transducers
The effect of vibration stress relief online rating system of information fusion.
The beneficial effects of the utility model are as follows：
1st, during parameter curve rating method evaluation effect of vibration stress relief, single acceleration transducer is only arranged on workpiece, by
Easily disturbed in the acceleration signal that acceleration transducer collection is returned be subject to extraneous factor, and when acceleration transducer goes out
During existing failure, it not is the real acceleration signal of workpiece that can cause the signal that collection is returned, and the appearance of these situations all can
Cause parameter curve rating method can not accurately and reliably evaluate effect of vibration stress relief, and the utility model with multi-sensor technology and
Based on information fusion technology, the effect of vibration stress relief online rating system energy based on multiple acceleration transducers information fusion is built
Enough overcome traditional parameters curve rating method evaluate effect of vibration stress relief when existing deficiency, so as to fulfill to effect of vibration stress relief into
Row is online, reliably evaluation.
2nd, carried compared to residual stress measurement method, precision stability detection method and dynamic stress criterion method, the utility model
The method gone out, which can be realized, carries out effect of vibration stress relief online, reliable evaluation.
3rd, the utility model proposes the effect of vibration stress relief on-line evaluation system based on multiple acceleration transducers information fusion
System and method will not produce damage when evaluating effect of vibration stress relief to workpiece, belong to lossless evaluation method.
4th, the utility model proposes the effect of vibration stress relief on-line evaluation system based on multiple acceleration transducers information fusion
When system carries out on-line evaluation to effect of vibration stress relief, it is controlled by master system, without manual operation, is reduced
Workload, improves work efficiency.
5th, the utility model proposes the effect of vibration stress relief on-line evaluation system based on multiple acceleration transducers information fusion
System and method, which can be realized, carries out effect of vibration stress relief online, reliable evaluation, to study the evaluation method of effect of vibration stress relief
Provide new thinking.
Brief description of the drawings
Effect of vibration stress relief online rating system schematic diagrames of the Fig. 1 based on multiple acceleration transducers information fusion.
Data Layer Fusion Model schematic diagrames of the Fig. 2 based on variance contribution ratio.
Embodiment
Referring to the drawings, the utility model is further illustrated：
Effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion, including master system,
Random waveform occur card, analog line driver, vibrator, acceleration transducer group, charge amplifier, oscillograph, data collecting card,
Support device；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
Card output amplitude and the independent and continuously adjustable sinusoidal excitation of frequency occur for master system control random waveform
Signal；The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator, driving vibrator production via analog line driver
Raw vibration；
Acceleration transducer in acceleration transducer group is installed on workpiece, and the acceleration in acceleration transducer group passes
The input channel of sensor and charge amplifier connects, and the output channel of charge amplifier is connected with oscillograph, oscillograph and data
Capture card connects, and data collecting card is connected with master system；
Master system includes the acceleration signal memory module that storage acceleration transducer group collects, based on variance tribute
The data Layer blending algorithm for offering rate writes module, and acceleration signal Fusion Module, the acceleration signal memory module after fusion, shows
Show the display module of the acceleration signal after fusion.
Further, acceleration transducer is piezoelectric acceleration transducer.
Further, support device is flexible member.
Further, the acceleration transducer number S included in acceleration sensing group is positive integer, and S >=3.
The sensor that the utility model uses is acceleration transducer, is same type sensor, therefore acceleration signal
Only need to be merged in data Layer, the utility model is using the data Layer blending algorithm based on variance contribution ratio.
If certain acceleration transducer collects an acceleration signal of workpiece with a certain sample frequency in sampling time t
Data sequence M (k), its discrete k number are respectively m according to value1,m2,…,mk.Define data value miTo what is gathered in time t
The variance contribution ratio of data sequence is
In formula：The respectively average of discrete signal M (k) and variance.
When having S similar acceleration transducers in certain time length while when gathering k acceleration information, if acceleration
Q-th of data of sensor s collections are msq, according to equation (1), its variance contribution ratio can be expressed as
In formula：μs、The respectively desired value and variance for the k discrete signal that s acceleration transducers collect.According to not
With the variance contribution ratio of measuring point acceleration signal time data, q-th of data m of acceleration transducer s collectionssqDistribution is melted
Close coefficient lambdasqFor
Then the value of q points is after data fusion
Data Layer Fusion Model based on variance contribution ratio first carries out S acceleration transducer in q-th of data point
Fusion, obtains Mq, then q=1,2 ..., k are traveled through, you can with the time-history curves of signal after being merged.
Effect of vibration stress relief on-line evaluation method based on multiple acceleration transducers information fusion comprises the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support device, so as to
Vibrator carries out exciting to workpiece；Acceleration transducer in acceleration transducer group is installed on workpiece；Connect host computer
System and random waveform block between signal link；The signal that random waveform occurs between card and analog line driver is connected to connect
Line；Connect the signal link between analog line driver and vibrator；Connect acceleration transducer group in acceleration transducer with
Signal link between charge amplifier；Connect the signal link between charge amplifier and oscillograph；Connect oscillograph and number
According to the signal link between capture card；Connect the signal link between data collecting card and master system；Connect host computer system
The power supply of card, analog line driver, vibrator, charge amplifier, oscillograph and data collecting card occurs for system, random waveform；
(2), master system control random waveform occurs to block carries out frequency sweep vibration to workpiece, so that it is determined that oscillating aging
Driving frequency；
(3), slowly adjusting the gain knob of analog line driver makes analog line driver export constant electric current, drives vibrator
Vibration stress relief treatment is carried out to workpiece；
(4), the data Layer blending algorithm based on variance contribution ratio in master system, which is write to write in module, is based on
The data Layer blending algorithm program of variance contribution ratio；To storage acceleration transducer group collection in acceleration signal Fusion Module
To acceleration signal memory module in the acceleration signal that stores carry out data fusion；Acceleration signal after fusion is stored
Acceleration signal memory module after to fusion, and shown by the display module of the acceleration signal after fusion；
(5), effect of vibration stress relief is evaluated using the amplitude of the acceleration signal after fusion, when master system is shown
During the amplitude stability of the acceleration signal after the fusion shown, stop carrying out vibration stress relief treatment to workpiece.
Content described in this specification embodiment is only enumerating to the way of realization of utility model design, this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, the scope of protection of the utility model also and
In those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (4)
1. the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion, including master system, appoint
Card, analog line driver, vibrator, acceleration transducer group, charge amplifier, oscillograph, data collecting card, branch occur for waveform of anticipating
Support arrangement；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support device；
Card output amplitude and the independent and continuously adjustable sinusoidal excitation signal of frequency occur for master system control random waveform；
The sinusoidal excitation signal that card output occurs for random waveform is input to vibrator via analog line driver, and driving vibrator, which produces, to shake
It is dynamic；
Acceleration transducer in acceleration transducer group is installed on workpiece, the acceleration transducer in acceleration transducer group
It is connected with the input channel of charge amplifier, the output channel of charge amplifier is connected with oscillograph, oscillograph and data acquisition
Card connection, data collecting card are connected with master system；
Master system includes the acceleration signal memory module that storage acceleration transducer group collects, based on variance contribution ratio
Data Layer blending algorithm write module, acceleration signal Fusion Module, the acceleration signal memory module after fusion, display melts
The display module of acceleration signal after conjunction.
2. the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion as claimed in claim 1,
It is characterized in that：Acceleration transducer is piezoelectric acceleration transducer.
3. the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion as claimed in claim 1,
It is characterized in that：Support device is flexible member.
4. the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion as claimed in claim 1,
It is characterized in that：The acceleration transducer number S included in acceleration sensing group is positive integer, and S >=3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721166793.XU CN207227503U (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion |
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| CN201721166793.XU CN207227503U (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion |
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| CN201721166793.XU Expired - Fee Related CN207227503U (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365902A (en) * | 2017-09-13 | 2017-11-21 | 上海海事大学 | A kind of effect of vibration stress relief online rating system and method based on multiple acceleration transducers information fusion |
| CN110095292A (en) * | 2019-05-15 | 2019-08-06 | 上海出入境检验检疫局机电产品检测技术中心 | A kind of baby carriage physical performance detecting device and platform |
-
2017
- 2017-09-13 CN CN201721166793.XU patent/CN207227503U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107365902A (en) * | 2017-09-13 | 2017-11-21 | 上海海事大学 | A kind of effect of vibration stress relief online rating system and method based on multiple acceleration transducers information fusion |
| CN110095292A (en) * | 2019-05-15 | 2019-08-06 | 上海出入境检验检疫局机电产品检测技术中心 | A kind of baby carriage physical performance detecting device and platform |
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