CN107143493B - Pump housing stuck point detection system and its stuck point judgment means and method - Google Patents
Pump housing stuck point detection system and its stuck point judgment means and method Download PDFInfo
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- CN107143493B CN107143493B CN201610707511.6A CN201610707511A CN107143493B CN 107143493 B CN107143493 B CN 107143493B CN 201610707511 A CN201610707511 A CN 201610707511A CN 107143493 B CN107143493 B CN 107143493B
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- kurtosis
- pump housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The present invention provides a kind of pump housing stuck point detection system and its stuck point judgment means and method.The stuck point judgment means, for carrying out the judgement that torsional test measurement data obtained carries out pump housing stuck point according to the pump housing, the stuck point judgment means include: kurtosis computing module and judgment module；The kurtosis computing module is used to calculate kurtosis using the measurement data；And the judgment module is used to be judged the pump housing with the presence or absence of stuck point according to the kurtosis.Above scheme according to the present invention is capable of detecting when to influence the stuck point of pump housing operation smoothness, so that the whole compressor due to caused by the stuck point of the pump housing be avoided to scrap.
Description
Technical field
The present invention relates to observation and control technology field more particularly to a kind of pump housing stuck point detection system and its stuck point judgment means and
Method.
Background technique
Core component of the pump housing as compressor of air conditioner, quality directly affect the quality of compressor.Wherein, the pump housing is transported
Capable smoothness is the content for needing emphasis to detect in pump housing quality testing with the presence or absence of the stuck point for causing the pump housing stuck.Mesh
Before, the detection of pump housing operation smoothness is mainly realized by judging the size of torque value, and only to torque value
Maximum value and minimum value are judged.However, this detection scheme has a defect that the operation that can not detect to influence the pump housing
The stuck point of smoothness.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of pump housing stuck point detection system and its stuck point judgment means and sides
Method is capable of detecting when to influence the stuck point of pump housing operation smoothness, to avoid the whole compressor due to caused by the stuck point of the pump housing
It scraps.
According to the first aspect of the invention, a kind of stuck point judgment means are provided, for carrying out torsion according to the pump housing
Test the judgement that measurement data obtained carries out pump housing stuck point, the stuck point judgment means include: kurtosis computing module and
Judgment module；The kurtosis computing module is used to calculate kurtosis using the measurement data；And the judgment module is used for root
Judge the pump housing with the presence or absence of stuck point according to the kurtosis.
Further, the judgment module judges the kurtosis whether within standard figures, to make the pump housing
With the presence or absence of the judgement of stuck point.
Further, if the kurtosis is in standard figures, judging the pump housing, there is no stuck points；Otherwise, then sentence
Breaking, there are stuck points for the pump housing.
Further, the kurtosis computing module includes the first kurtosis computing module and fractionation kurtosis computing module；Institute
The first kurtosis computing module is stated for according to carrying out torsional test measurement data obtained the first kurtosis of calculating to the pump housing；And
The fractionation kurtosis computing module is used to the measurement data being split as more than two arrays, and calculates separately each described
The kurtosis of array, to obtain maximum kurtosis value as fractionation kurtosis；The judgment module is according to first kurtosis and described
Splitting kurtosis judges the pump housing with the presence or absence of stuck point.
Further, the fractionation kurtosis computing module includes the second kurtosis computing module and third kurtosis computing module；
The measurement data is split as the array of the first quantity by the second kurtosis computing module, and calculates the kurtosis value of each data, is obtained
Maximum kurtosis value is obtained as the second kurtosis；And the measurement data is split as being different from the first number by third kurtosis computing module
The array of second quantity of amount, calculates the kurtosis value of each array in the array of second quantity, and obtains maximum kurtosis value and make
For third kurtosis；Wherein, the quantity that first, second quantity is 2 or more；The judgment module according to first kurtosis with
And second, third described kurtosis judges the pump housing with the presence or absence of stuck point.
Further, the device further include: difference calculating module, for obtain in the measurement data maximum value and
Minimum value, and calculate the difference of the maxima and minima；And the judgment module also according to the maximum value, it is described most
Small value and the difference are to determine whether there are the stuck points.
According to the second aspect of the invention, a kind of stuck point judgment method is provided, for carrying out torsion according to the pump housing
The judgement that measurement data obtained carries out pump housing stuck point is tested, the stuck point judgment method includes: that kurtosis calculates step, is utilized
The measurement data calculates kurtosis；And the judgment step, judge the pump housing with the presence or absence of stuck point according to the kurtosis.
Further, in the judgment step, the kurtosis is judged whether within standard figures, to make the pump
Body whether there is the judgement of stuck point.
Further, if the kurtosis is in standard figures, judging the pump housing, there is no stuck points；Otherwise, then sentence
Breaking, there are stuck points for the pump housing.
Further, it includes: that the first kurtosis calculates step and splits kurtosis calculating step that the kurtosis, which calculates step,；Institute
It states the first kurtosis and calculates step, calculate the first kurtosis according to torsional test measurement data obtained is carried out to the pump housing；And institute
It states and splits kurtosis calculating step, the measurement data is split as more than two arrays, and calculate separately each array
Kurtosis, to obtain maximum kurtosis value as fractionation kurtosis；In the judgment step, according to first kurtosis and described tear open
Kurtosis is divided to judge the pump housing with the presence or absence of stuck point.
Further, it includes that the second kurtosis calculates step and third kurtosis calculating step that the fractionation kurtosis, which calculates step,；
Second kurtosis calculates step, the measurement data is split as to the array of the first quantity, and calculate the kurtosis value of each data, obtained
Maximum kurtosis value is obtained as the second kurtosis；And third kurtosis calculates step, and the measurement data is split as to be different from first
The array of second quantity of quantity, calculates the kurtosis value of each array in the array of second quantity, and obtains maximum kurtosis value
As third kurtosis；Wherein, the quantity that first, second quantity is 2 or more；In the judgment step, according to described first
Kurtosis and second, third described kurtosis judge the pump housing with the presence or absence of stuck point.
Further, the method further include: difference calculates step, obtains maximum value and minimum in the measurement data
Value, and calculate the difference of the maxima and minima；And in the judgment step, also according to the maximum value, it is described most
Small value and the difference are to determine whether there are the stuck points.
According to the third aspect of the invention we, a kind of stuck point detection system of pump housing is provided, comprising: torque test device is used
In the torsion for measuring the pump housing and export measurement data；And the stuck point judgment means as described in any of the above-described.
Further, the torque test device includes: torsion sensor, for measuring the torsion of the pump housing；And
Data acquisition device for acquiring the measurement data from the torsion sensor, and exports and judges to fill to the stuck point
It sets.
Above scheme according to the present invention, by between kurtosis (kurtosis multi-region), the maximum value of measurement data, minimum value
And the judgement of the calculating of difference, make it possible to realize the accurate judgement to the stuck point of the pump housing, so as to avoid due to the pump housing
Whole compressor caused by stuck point is scrapped.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural block diagram of pump housing stuck point detection system according to one preferred embodiment of the present invention.
Fig. 2 shows the structural block diagrams of the stuck point judgment means according to one preferred embodiment of the present invention.
Fig. 3 shows the flow chart of the judgment method of pump housing stuck point according to one preferred embodiment of the present invention.
Fig. 4 shows in the stuck point judgment means and method of a preferred embodiment according to the present invention and measures data
The flow chart of processing.
Fig. 5 shows the stuck point judgment means for realizing preferred specific embodiment of the present invention.
Fig. 6 shows the peak value figure in pump housing torque measurement curve middle pump body stuck point.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Fig. 1, Fig. 2 is combined to illustrate that pump housing stuck point detection system according to the present invention and its included stuck point are sentenced first
Disconnected device.Fig. 1 shows the structural block diagram of pump housing stuck point detection system according to one preferred embodiment of the present invention.Fig. 2 shows
The structural block diagram of the stuck point judgment means according to one preferred embodiment of the present invention.
As shown in Figure 1, the stuck point detection system of the pump housing includes torque test device 1 and stuck point judgment means 2.Institute
Stating torque test device 1 includes, for example, torsion sensor 11, data acquisition device 12, for measuring torsion and the output of the pump housing
Measurement data.The torsion sensor 11 is used to measure the torsion of the pump housing, and the data acquisition device 12 is, for example, data
Capture card, the data measured for acquiring the torsion sensor 11, and export to the stuck point judgment means 2.
The stuck point judgment means 2 carry out the judgement of stuck point according to the measurement data that torque test device 1 is sent.Such as figure
Shown in 2, the stuck point judgment means 2 include kurtosis computing module K and judgment module 24.The kurtosis computing module K is used for
Kurtosis is calculated according to torsional test measurement data obtained is carried out to the pump housing.The judgment module 24 is used for according to the kurtosis
Judge the pump housing with the presence or absence of stuck point.Specifically, the judgment module 24 judge the kurtosis whether in standard figures, from
And it makes the pump housing and whether there is the judgement of stuck point.If the kurtosis, in standard figures, the card is not present in judgement
Point；Otherwise, then judge that there are stuck points for the pump housing.
Kurtosis is very sensitive to the impact phenomenon in signal, therefore can be used for detecting existing with the presence or absence of impact in random signal
As.Its calculation formula is:
In formula, N is the number of measurement data, xnFor n-th of measurement data, μxFor total average value of measurement data, σx
For total standard value of measurement data.Since the stuck point of the pump housing is to occur with waveform peak, and belong to mutation on torque value
Type, as shown in Figure 6.Therefore in above scheme of the invention, introduce the calculating of kurtosis as judge that stuck point whether there is according to
According to realize the test of the stuck point to the pump housing.
In a preferred embodiment, the kurtosis computing module K includes the first kurtosis computing module 21 and fractionation kurtosis
Computing module 22.The first kurtosis computing module 21 according to the pump housing by carrying out based on torsional test measurement data obtained
Calculate the first kurtosis.The fractionation kurtosis computing module 22 is used to for the measurement data being split as more than two arrays, and divides
The kurtosis for not calculating each array, to obtain maximum kurtosis value as fractionation kurtosis.The judgment module 24 is according to described
First kurtosis and the fractionation kurtosis judge the pump housing with the presence or absence of stuck point.Specifically, the judgment module 24 judges institute
The first kurtosis and the fractionation kurtosis are stated whether in standard figures, to make the pump housing sentencing with the presence or absence of stuck point
It is disconnected.If first kurtosis and the fractionation kurtosis, in standard figures, the stuck point is not present in judgement；Otherwise, appoint
One above-mentioned numerical value then judges that there are stuck points for the pump housing not in standard scale.
In the scheme of above preferred embodiment, by the way that measurement data is split as multiple arrays, with the torsion to different sections
Force value carries out algorithm process, obtains different kurtosis, and avoiding causes when pump housing many places are widened there are test mean value when stuck point
Can not determine stuck point, that is, avoid and fail to judge to stuck point, so that detection to the stuck point and judging more accurate.
It is further preferred that the fractionation kurtosis computing module 22 can specifically include 221 He of the second kurtosis computing module
Third kurtosis computing module 222.The measurement data is split as the array of the first quantity by the second kurtosis computing module 221, and
The kurtosis value of each data is calculated, obtains maximum kurtosis value as the second kurtosis.Third kurtosis computing module 222 is by the measurement
Data are split as the array of the second quantity different from the first quantity, calculate the kurtosis of each array in the array of second quantity
Value, and maximum kurtosis value is obtained as third kurtosis.The quantity that first, second quantity is two or more, such as the first quantity
Array be two groups of data, the array of the second quantity is three groups of arrays etc..The judgment module 24 according to first kurtosis with
And second, third described kurtosis judges the pump housing with the presence or absence of stuck point.Specifically, the judgment module 24 judges described first
Whether kurtosis and second, third described kurtosis are in standard figures, so that making the pump housing whether there is the judgement of stuck point.
If first kurtosis and second, third described kurtosis, in standard figures, the stuck point is not present in judgement；Otherwise,
Any above-mentioned numerical value then judges that there are stuck points for the pump housing not in standard scale.
Herein, it by the way that measurement data to be split as to the array of the first, second quantity respectively, further avoids when the card
Stuck point is failed to judge caused by when point is located at the boundary for splitting data, so that test result is more accurate.Herein it should be noted that
It is exemplary only to the description of array quantity above, can according to the size of the demand of measurement accuracy and measurement data amount into
Row setting.Specifically, cause calculated result inaccurate to avoid the element (data) in every group of array very few, split array
Quantity should not be excessive, and the fractionation of the array is preferably average splits.
Further, the stuck point judgment means 2 further include difference calculating module 23.The difference calculating module 23 is used for
Maximum value and minimum value in the measurement data are obtained, and calculates the difference of the maxima and minima.Preferably, the difference
Computing module 23 includes maximum value extraction module, minimum value extraction module and subtraction block.The maximum value extraction module and
Minimum value extraction module extracts maximum value and minimum value from the measurement data respectively, subtraction block calculate the maximum value and
The difference of minimum value.The judgment module 24 judges also according to the maximum value, the minimum value and the difference
With the presence or absence of the stuck point.Specifically, the judgment module 24 judges first kurtosis, the maximum value, the minimum value
And whether the difference and/or the fractionation kurtosis (second, third kurtosis) in standard figures, to make the pump housing
With the presence or absence of the judgement of the stuck point.If first kurtosis, the maximum value, the minimum value and the difference and/or
The fractionation kurtosis (second, third kurtosis) is in standard figures, then judging the pump housing, there is no the stuck points；Otherwise,
Any above-mentioned numerical value then judges that there are stuck points for the pump housing not in standard scale.
In this way, for the pump housing there are impurity, characterization stuck point present in torque measurement curve waveform
Peak value may be less obvious, leads to the testing result inaccuracy that stuck point is detected by kurtosis.But for there are the pump housings of impurity
For, change in torque when rotating is obvious, and the fluctuation of the waveform tested out can be bigger, at this moment can pass through survey
The measurement of the maximum value, minimum value and difference is measured more accurately to detect the point card of the pump housing.
The standard figures include first kurtosis, the maximum value, the minimum value, the difference and described tear open
Divide the upper limit value of kurtosis (second, third kurtosis), which is empirical value, can pass through experiment and obtain.
The stuck point judgment method of the pump housing according to the present invention is described below according to Fig. 3.Fig. 3 is shown according to the present invention
The flow chart of the judgment method of the pump housing stuck point of one preferred embodiment.
As shown in figure 3, the stuck point judgment method includes: that kurtosis calculates step S1 and judgment step S2.The kurtosis
Step S1 is calculated, calculates kurtosis according to torsional test measurement data obtained is carried out to the pump housing；And the judgment step S2,
Judge the pump housing with the presence or absence of stuck point according to the kurtosis.Specifically, judge the kurtosis whether in standard figures, thus
Making the pump housing whether there is the judgement of stuck point.If the kurtosis, in standard figures, the stuck point is not present in judgement；
Otherwise, then judge that there are stuck points for the pump housing.The calculating of kurtosis is obtained using formula (1) as described above.
In a preferred embodiment, it includes that the first kurtosis calculates step S11 and splits high and steep that the kurtosis, which calculates step S1,
Degree calculates step S12.First kurtosis calculates step S11, carries out torsional test measurement data obtained according to the pump housing
Calculate the first kurtosis.The fractionation kurtosis calculates step S12, the measurement data is split as more than two arrays, and divide
The kurtosis for not calculating each array, to obtain maximum kurtosis value as fractionation kurtosis.The judgment step S2, according to described
First kurtosis and the fractionation kurtosis judge the pump housing with the presence or absence of stuck point.Specifically, judge first kurtosis and
Whether the fractionation kurtosis is in standard figures, so that making the pump housing whether there is the judgement of stuck point.If described first is high and steep
Degree and the fractionation kurtosis are in standard figures, then the stuck point is not present in judgement；Otherwise, any above-mentioned numerical value is not being marked
In quasi- numberical range, then judge that there are stuck points for the pump housing.
It is further preferred that the fractionation kurtosis, which calculates step S12, can specifically include the second kurtosis and calculate step and the
Three kurtosis calculate step.Second kurtosis calculates the array that the measurement data is split as the first quantity by step, and calculates each
The kurtosis value of data obtains maximum kurtosis value as the second kurtosis.Third kurtosis calculates step and is split as the measurement data
Different from the array of the second quantity of the first quantity, the kurtosis value of each array in the array of second quantity is calculated, and is obtained
Maximum kurtosis value is as third kurtosis.The quantity that first, second quantity is two or more, such as the array of the first quantity is two
Group data, the array of the second quantity are three groups of arrays etc..The judgment step S2, according to first kurtosis and described
Two, third kurtosis judges the pump housing with the presence or absence of stuck point.Specifically, judge first kurtosis and it is described second, third
Whether kurtosis is in standard figures, so that making the pump housing whether there is the judgement of stuck point.If first kurtosis and institute
Second, third kurtosis is stated in standard figures, then the stuck point is not present in judgement；Otherwise, any above-mentioned numerical value is not in standard
In numberical range, then judge that there are stuck points for the pump housing.
And further, the stuck point judgment method further includes that difference calculates step S3.The difference calculates step S3,
Greatest measurement and minimum measured value in the measurement data are obtained, and calculates the difference of the maxima and minima.It is described to sentence
Disconnected module 24 is also according to the maximum value, the minimum value and the difference to determine whether there are the stuck points.Specifically,
Judge first kurtosis, the maximum value, the minimum value and the difference and/or fractionation kurtosis (second, third
Kurtosis) whether in standard figures, so that making the pump housing whether there is the judgement of the stuck point.If first kurtosis,
The maximum value, the minimum value and the difference and/or the fractionation kurtosis (second, third kurtosis) are in standard figures
Interior, then judging the pump housing, there is no the stuck points；Otherwise, any above-mentioned numerical value then judges institute not in standard scale
Stating the pump housing, there are stuck points.
One preferred specific implementation of the stuck point judgment means according to the present invention and method is described below in conjunction with Fig. 4,5
Example.Fig. 4 shows in the stuck point judgment means and method of a preferred embodiment according to the present invention and measures data processing
Flow chart.Fig. 5 shows the stuck point judgment means for realizing preferred specific embodiment of the present invention.
The torsional test of the pump housing stuck point detection system starting pump housing as shown in Figure 1, the torque test device 1
Torsion sensor 11 measures the torsion of the pump housing, and the data acquisition device 12 such as data collecting card acquisition obtains the measurement number
According to.Stuck point judgment means 2 utilize the first kurtosis computing module 21 shown in fig. 5, the second kurtosis meter according to process described in Fig. 4
It calculates module 221, third kurtosis computing module 222, difference calculating module 23 to handle measurement data, including calculates and obtain institute
State the first kurtosis, second kurtosis, maximum value, the minimum value and the difference described in third kurtosis.Judgment module 24
By maximum value, the minimum value and the difference described in first kurtosis, second kurtosis, third kurtosis in criterion numeral
Whether value is compared, judge it within the standard figures.If above-mentioned each value is in criterion of acceptability, qualified letter is exported
Number；If having one not in criterion of acceptability, unqualified signal is exported.
The pump housing stuck point detection system of the invention and its stuck point judgment means and method are described above.Root
According to above scheme of the invention, by between kurtosis (kurtosis multi-region), the maximum value of measurement data, minimum value and difference
The judgement of calculating makes it possible to realize the accurate judgement to the stuck point of the pump housing, so as to avoid caused by the stuck point due to the pump housing
Whole compressor is scrapped.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, this hair is still fallen within
In the range of bright technical solution.
Claims (16)
1. a kind of stuck point judgment means, for carrying out torsional test measurement data progress pump housing stuck point obtained according to the pump housing
Judgement, which is characterized in that the stuck point judgment means include:
Kurtosis computing module and judgment module；
The kurtosis computing module is used to calculate kurtosis using the measurement data；And
The judgment module is used to be judged the pump housing with the presence or absence of stuck point according to the kurtosis.
2. device as described in claim 1, which is characterized in that
The judgment module judges the kurtosis whether within standard figures, to make the pump housing with the presence or absence of stuck point
Judgement.
3. device as claimed in claim 2, which is characterized in that
If the kurtosis in standard figures, judges the pump housing, there is no stuck points；Otherwise, then judge that the pump housing exists
Stuck point.
4. device as described in any one of claims 1-3, which is characterized in that
The kurtosis computing module includes the first kurtosis computing module and fractionation kurtosis computing module；
The first kurtosis computing module is used to calculate the first kurtosis using the measurement data；And
The fractionation kurtosis computing module is used to the measurement data being split as more than two arrays, and is utilized respectively each
Data in the array calculate kurtosis, to obtain maximum kurtosis value as fractionation kurtosis；
The judgment module judges the pump housing with the presence or absence of stuck point according to first kurtosis and the fractionation kurtosis.
5. device as claimed in claim 4, which is characterized in that
The fractionation kurtosis computing module includes the second kurtosis computing module and third kurtosis computing module；
The measurement data is split as the array of the first quantity by the second kurtosis computing module, and is utilized respectively first quantity
Each array calculates kurtosis in array, using maximum kurtosis value therein as the second kurtosis；And
The measurement data is split as the array of the second quantity different from the first quantity by third kurtosis computing module, respectively benefit
Kurtosis is calculated with each array in the array of second quantity, using maximum kurtosis value therein as third kurtosis；Wherein, institute
State the quantity that the first, second quantity is 2 or more；
The judgment module judges the pump housing with the presence or absence of card according to first kurtosis and second, third described kurtosis
Point.
6. such as claim 1-3,5 described in any item devices, which is characterized in that further include:
Difference calculating module for obtaining maximum value and minimum value in the measurement data, and calculates the maximum value and minimum
The difference of value；And
The judgment module is also according to the maximum value, the minimum value and the difference to determine whether there are the cards
Point.
7. device as claimed in claim 4, which is characterized in that further include:
Difference calculating module for obtaining maximum value and minimum value in the measurement data, and calculates the maximum value and minimum
The difference of value；And
The judgment module is also according to the maximum value, the minimum value and the difference to determine whether there are the cards
Point.
8. a kind of stuck point judgment method, for carrying out torsional test measurement data progress pump housing stuck point obtained according to the pump housing
Judgement, which is characterized in that the stuck point judgment method includes:
Kurtosis calculates step, calculates kurtosis using the measurement data；And
Judgment step judges the pump housing with the presence or absence of stuck point according to the kurtosis.
9. method according to claim 8, which is characterized in that
In the judgment step, the kurtosis is judged whether within standard figures, to make the pump housing with the presence or absence of card
The judgement of point.
10. method as claimed in claim 9, which is characterized in that
If the kurtosis in standard figures, judges the pump housing, there is no stuck points；Otherwise, then judge that the pump housing exists
Stuck point.
11. such as the described in any item methods of claim 8-10, which is characterized in that
It includes: that the first kurtosis calculates step and splits kurtosis calculating step that the kurtosis, which calculates step,；
First kurtosis calculates step, calculates the first kurtosis according to torsional test measurement data obtained is carried out to the pump housing；
And
The fractionation kurtosis calculates step, the measurement data is split as more than two arrays, and calculate separately each institute
The kurtosis for stating array, to obtain maximum kurtosis value as fractionation kurtosis；
In the judgment step, judge the pump housing with the presence or absence of stuck point according to first kurtosis and the fractionation kurtosis.
12. method as claimed in claim 11, which is characterized in that
It includes that the second kurtosis calculates step and third kurtosis calculating step that the fractionation kurtosis, which calculates step,；
Second kurtosis calculates step, the measurement data is split as to the array of the first quantity, and be utilized respectively first quantity
Array in each array calculate kurtosis, obtain maximum kurtosis value as the second kurtosis；And
Third kurtosis calculates step, the measurement data is split as to the array of the second quantity different from the first quantity, respectively
Kurtosis is calculated using each array in the array of second quantity, and obtains maximum kurtosis value as third kurtosis；Wherein, institute
State the quantity that the first, second quantity is 2 or more；
In the judgment step, judge that the pump housing whether there is according to first kurtosis and second, third described kurtosis
Stuck point.
13. such as claim 8-10,12 described in any item methods, which is characterized in that further include:
Difference calculates step, obtains maximum value and minimum value in the measurement data, and calculate the maxima and minima
Difference；And
In the judgment step, also according to the maximum value, the minimum value and the difference to determine whether in the presence of described in
Stuck point.
14. method as claimed in claim 11, which is characterized in that further include:
Difference calculates step, obtains maximum value and minimum value in the measurement data, and calculate the maxima and minima
Difference；And
In the judgment step, also according to the maximum value, the minimum value and the difference to determine whether in the presence of described in
Stuck point.
15. a kind of stuck point detection system of pump housing characterized by comprising
Torque test device, for measuring the torsion of the pump housing and exporting measurement data；And
The stuck point judgment means as described in claim any one of 1-7.
16. system as claimed in claim 15, which is characterized in that
The torque test device includes:
Torsion sensor, for measuring the torsion of the pump housing；And
Data acquisition device for acquiring the measurement data from the torsion sensor, and exports and sentences to the stuck point
Disconnected device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610707511.6A CN107143493B (en) | 2016-08-23 | 2016-08-23 | Pump housing stuck point detection system and its stuck point judgment means and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707511.6A CN107143493B (en) | 2016-08-23 | 2016-08-23 | Pump housing stuck point detection system and its stuck point judgment means and method |
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| CN102494899A (en) * | 2011-11-25 | 2012-06-13 | 华南理工大学 | Composite fault diagnosis method for diesel engine and diagnosis system |
| CN104596764A (en) * | 2015-02-02 | 2015-05-06 | 华北电力大学 | Fault diagnosing and predicating test device for epicyclic gearbox |
| CN104816607A (en) * | 2015-05-06 | 2015-08-05 | 安徽江淮汽车股份有限公司 | Automobile air conditioning compressor monitoring method and device |
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2016
- 2016-08-23 CN CN201610707511.6A patent/CN107143493B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941474A (en) * | 1988-07-01 | 1990-07-17 | Massachusetts Institute Of Technology | Multivariable analysis of bone condition |
| CN102022315A (en) * | 2010-07-20 | 2011-04-20 | 广东万家乐燃气具有限公司 | Water pump locking detection system of gas heating water heater |
| CN102494899A (en) * | 2011-11-25 | 2012-06-13 | 华南理工大学 | Composite fault diagnosis method for diesel engine and diagnosis system |
| CN104596764A (en) * | 2015-02-02 | 2015-05-06 | 华北电力大学 | Fault diagnosing and predicating test device for epicyclic gearbox |
| CN104816607A (en) * | 2015-05-06 | 2015-08-05 | 安徽江淮汽车股份有限公司 | Automobile air conditioning compressor monitoring method and device |
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