CN107365902A - A kind of effect of vibration stress relief online rating system and method based on multiple acceleration transducers information fusion - Google Patents
A kind of effect of vibration stress relief online rating system and method based on multiple acceleration transducers information fusion Download PDFInfo
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- CN107365902A CN107365902A CN201710819758.1A CN201710819758A CN107365902A CN 107365902 A CN107365902 A CN 107365902A CN 201710819758 A CN201710819758 A CN 201710819758A CN 107365902 A CN107365902 A CN 107365902A
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- C—CHEMISTRY; METALLURGY
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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Abstract
Card, analog line driver, vibrator, acceleration transducer group, charge amplifier, oscillograph, data collecting card, support meanss 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 meanss；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.Effect of vibration stress relief on-line evaluation method based on multiple acceleration transducers information fusion carries out data fusion to the acceleration signal collected using the data Layer blending algorithm based on variance contribution ratio in data Layer.The present invention has the advantages of can online, reliably evaluating effect of vibration stress relief.
Description
Technical field
The present invention relates to vibration aging technology field, when refering in particular to a kind of vibration based on multiple acceleration transducers information fusion
Imitate effect online rating system and method.
Technical background
The effect assessment of vibration aging technology is one of the key issue in vibration aging technology field.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, because the acceleration signal that acceleration transducer collection is returned easily is disturbed by extraneous factor, and work 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 assess 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 assess 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 terminates, 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, qualitative evaluation can be carried out to the effect of vibration aging technology, 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 certain correlation to be present with effect of vibration stress relief.They, which study, finds dynamic stress and remnants
Quantitative non-linear dependencies between stress release effect be present, 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 assessing, and vibration aging technology national standard not yet provides to it, influences in addition
The factor of dynamic stress criterion is a lot, such as Fine Texture of Material, external condition.Therefore, dynamic stress criterion method and imperfection, also need into
Row is substantial amounts of to be tested to establish dynamic stress criterion form.
Although at present can not be to shaking there is the effect evaluation method of some vibration aging technologies, existing evaluation method
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 insufficient existing for existing effect of vibration stress relief evaluation method, the present invention proposes that one kind is based on more acceleration
The effect of vibration stress relief online rating system and method for sensor data fusion, that is, establish 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.
The content of the invention
For insufficient existing for existing effect of vibration stress relief evaluation method, the present invention proposes that one kind is based on more acceleration sensings
The effect of vibration stress relief online rating system and method for device information fusion, that is, establish based on multiple acceleration transducers information fusion
Effect of vibration stress relief online rating system, 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 meanss；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support meanss；
Card output amplitude and the sinusoidal excitation of frequency independence and continuously adjustabe 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 arranged on workpiece, and the acceleration in acceleration transducer group passes
The input channel of sensor and charge amplifier is connected, and the output channel of charge amplifier is connected with oscillograph, oscillograph and data
Capture card is connected, 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, 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 meanss are flexible member.
Further, the acceleration transducer number S included in acceleration sensing group is positive integer, and S >=3.
The sensor that the present invention uses is acceleration transducer, is same type sensor, therefore acceleration signal only needs
To be merged in data Layer, the present invention 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 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：Respectively discrete signal M (k) average 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 the variance contribution ratio of different measuring points acceleration signal time data, q-th of acceleration transducer s collections
Data msqThe fusion coefficients λ of distributionsqFor
Then the value of q points is after data fusion
Data Layer Fusion Model based on variance contribution ratio is carried out to S acceleration transducer in q-th of data point first
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 meanss, so as to
Vibrator carries out exciting to workpiece；Acceleration transducer in acceleration transducer group is arranged 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；The signal link connected between analog line driver and vibrator；Connect acceleration transducer group in acceleration transducer with
Signal link between charge amplifier；The signal link connected between charge amplifier and oscillograph；Connect oscillograph and number
According to the signal link between capture card；The signal link connected 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 the gain knob of regulation 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 shows
During the amplitude stability of the acceleration signal after the fusion shown, stop carrying out vibration stress relief treatment to workpiece.
The present invention technical concept be：Card, analog line driver, vibrator, acceleration are occurred by master system, random waveform
Degree sensor group, charge amplifier, oscillograph, data collecting card and support meanss composition are based on multiple acceleration transducers information
The effect of vibration stress relief online rating system of fusion；Added using the data Layer blending algorithm based on variance contribution ratio to what is collected
Rate signal carries out data fusion in data Layer, when the amplitude stability of the acceleration signal after fusion, stops carrying out workpiece
Vibration stress relief treatment.
Beneficial effects of the present invention 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 by 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
Parameter curve rating method is caused can not accurately and reliably to evaluate effect of vibration stress relief, and the present invention is with multi-sensor technology and information
Based on integration technology, the effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion is built, can
Existing deficiency when overcoming traditional parameters curve rating method evaluation effect of vibration stress relief, is carried out so as to realize to effect of vibration stress relief
Online, reliable evaluation.
2nd, it is proposed by the present invention compared to residual stress measurement method, precision stability detection method and dynamic stress criterion method
Method, which can be realized, carries out online, reliable evaluation to effect of vibration stress relief.
3rd, effect of vibration stress relief online rating system proposed by the present invention based on multiple acceleration transducers information fusion and
Method will not produce damage when evaluating effect of vibration stress relief to workpiece, belong to lossless evaluation method.
4th, the effect of vibration stress relief online rating system pair proposed by the present invention based on multiple acceleration transducers information fusion
When effect of vibration stress relief carries out on-line evaluation, it is controlled by master system, without manually operated, reduces work
Amount, improves operating efficiency.
5th, effect of vibration stress relief online rating system proposed by the present invention based on multiple acceleration transducers information fusion and
Method, which can be realized, carries out online, reliable evaluation to effect of vibration stress relief, is provided to study the evaluation method of effect of vibration stress relief
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 present invention 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 meanss；Vibrator is fixed on the surface of workpiece, and workpiece is supported using flexible support meanss；
Card output amplitude and the sinusoidal excitation of frequency independence and continuously adjustabe 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 arranged on workpiece, and the acceleration in acceleration transducer group passes
The input channel of sensor and charge amplifier is connected, and the output channel of charge amplifier is connected with oscillograph, oscillograph and data
Capture card is connected, 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, 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 meanss are flexible member.
Further, the acceleration transducer number S included in acceleration sensing group is positive integer, and S >=3.
The sensor that the present invention uses is acceleration transducer, is same type sensor, therefore acceleration signal only needs
To be merged in data Layer, the present invention 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 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：Respectively discrete signal M (k) average 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 the variance contribution ratio of different measuring points acceleration signal time data, q-th of acceleration transducer s collections
Data msqThe fusion coefficients λ of distributionsqFor
Then the value of q points is after data fusion
Data Layer Fusion Model based on variance contribution ratio is carried out to S acceleration transducer in q-th of data point first
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 meanss, so as to
Vibrator carries out exciting to workpiece；Acceleration transducer in acceleration transducer group is arranged 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；The signal link connected between analog line driver and vibrator；Connect acceleration transducer group in acceleration transducer with
Signal link between charge amplifier；The signal link connected between charge amplifier and oscillograph；Connect oscillograph and number
According to the signal link between capture card；The signal link connected 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 the gain knob of regulation 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 shows
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 inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (5)
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 meanss；
Card output amplitude and the sinusoidal excitation signal of frequency independence and continuously adjustabe 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 arranged 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 meanss are 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.
5. use the effect of vibration stress relief on-line evaluation based on multiple acceleration transducers information fusion as described in claim 1-4
System, the method that on-line evaluation is carried out to effect of vibration stress relief comprise the following steps：
(1), workpiece is fixedly connected with vibrator；Workpiece is supported by flexible support meanss, so as to exciting
Device carries out exciting to workpiece；Acceleration transducer in acceleration transducer group is arranged on workpiece；Connect master system
Signal link between blocking with random waveform；Random waveform is connected to occur to block the signal link between analog line driver；
The signal link connected between analog line driver and vibrator；The acceleration transducer and electric charge connected in acceleration transducer group
Signal link between amplifier；The signal link connected between charge amplifier and oscillograph；Oscillograph is connected to adopt with data
Signal link between truck；The signal link connected between data collecting card and master system；Connect master system, appoint
The power supply of card, analog line driver, vibrator, charge amplifier, oscillograph and data collecting card occurs for waveform of anticipating；
(2), card occurs for master system control random waveform to workpiece progress frequency sweep vibration, so that it is determined that the excitation of oscillating aging
Frequency；
(3), slowly the gain knob of regulation analog line driver makes analog line driver export constant electric current, and driving vibrator is to work
Part carries out vibration stress relief treatment；
(4), the data Layer blending algorithm based on variance contribution ratio in master system, which is write in module, writes based on variance
The data Layer blending algorithm program of contribution rate；Storage acceleration transducer group is collected in acceleration signal Fusion Module
The acceleration signal stored in acceleration signal memory module carries out data fusion；By the acceleration signal storage after fusion to melting
Acceleration signal memory module after conjunction, 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, shown when master system
During the amplitude stability of the acceleration signal after fusion, stop carrying out vibration stress relief treatment to workpiece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710819758.1A CN107365902B (en) | 2017-09-13 | 2017-09-13 | A kind of effect of vibration stress relief online rating system and method based on the fusion of multiple acceleration transducers information |
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| CN107365902B CN107365902B (en) | 2019-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000560A1 (en) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | Method and device for evaluating tactile experience, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484545A (en) * | 2014-06-13 | 2015-04-01 | 南昌大学 | Variance devoting rate based dynamic fusion responding method of flood discharge structure vibration |
| CN105861811A (en) * | 2016-04-28 | 2016-08-17 | 上海海事大学 | Online quantitative evaluation system and method for vibration aging effect |
| CN106834657A (en) * | 2016-09-20 | 2017-06-13 | 上海海事大学 | A kind of multidimensional high frequency microscopic vibration aging system and method |
| CN207227503U (en) * | 2017-09-13 | 2018-04-13 | 上海海事大学 | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion |
-
2017
- 2017-09-13 CN CN201710819758.1A patent/CN107365902B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104484545A (en) * | 2014-06-13 | 2015-04-01 | 南昌大学 | Variance devoting rate based dynamic fusion responding method of flood discharge structure vibration |
| CN105861811A (en) * | 2016-04-28 | 2016-08-17 | 上海海事大学 | Online quantitative evaluation system and method for vibration aging effect |
| CN106834657A (en) * | 2016-09-20 | 2017-06-13 | 上海海事大学 | A kind of multidimensional high frequency microscopic vibration aging system and method |
| CN207227503U (en) * | 2017-09-13 | 2018-04-13 | 上海海事大学 | A kind of effect of vibration stress relief online rating system based on multiple acceleration transducers information fusion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000560A1 (en) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | Method and device for evaluating tactile experience, and storage medium |
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