CN107526784A - A kind of method for diagnosing faults based on matrix fill-in - Google Patents
A kind of method for diagnosing faults based on matrix fill-in Download PDFInfo
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Abstract
The present invention relates to a kind of method for diagnosing faults based on matrix fill-in, this method comprises the following steps:(1) real-time status data to be diagnosed is obtained;(2) the N group historical data related to real-time status data is extracted from database, every group of historical data includes historical state data and corresponding malfunction;(3) real-time status data and N groups historical data are formed into fault diagnosis matrix, parameter to be filled is the malfunction corresponding to real-time status data in the fault diagnosis matrix;(4) matrix fill-in is carried out to fault diagnosis matrix and obtains the numerical value of parameter to be filled, and then determine malfunction.Compared with prior art, fault diagnosis order of accuarcy of the present invention is high.
Description
Technical field
The present invention relates to a kind of method for diagnosing faults, more particularly, to a kind of method for diagnosing faults based on matrix fill-in.
Background technology
Occur from artificial intelligence technology, technique is just rapidly promoted, applies to include industry, finance, business etc.
Numerous areas.Simultaneously because the lifting of computer computation ability, using historical data as training set, passes through suitable machine learning
Algorithm, obtaining the higher and higher prediction result of the degree of accuracy becomes reality.Therefore the mankind have witnessed computer in 1997 in Christian era
Deep Blue defeats world champion chess player cassie Paro husband, and has witnessed AlphaGo in weiqi play chess in 2017 Christian eras then
Defeat Lee's world champion generation stone.But so far, it using fuzzy reasoning is main that the modes of most of fault diagnosises, which is still,
Means, lack effective utilization to historical state data.For to a certain extent, a kind of wave to data resource is caused
Take.And the determination of the setting of fuzzy rule, especially parameter can be different because of the equipment of different batches, or even same batch
Equipment need parameter also have certain difference.This just needs artificial continuous adjusting parameter, and certain degree be present
Subjectivity.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind is based on matrix fill-in
Method for diagnosing faults.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of method for diagnosing faults based on matrix fill-in, this method comprise the following steps:
(1) real-time status data to be diagnosed is obtained;
(2) the N group historical data related to real-time status data is extracted from database, every group of historical data includes going through
History status data and corresponding malfunction;
(3) real-time status data and N groups historical data are formed into fault diagnosis matrix, it is to be filled in the fault diagnosis matrix
Parameter is the malfunction corresponding to real-time status data;
(4) matrix fill-in is carried out to fault diagnosis matrix and obtains the numerical value of parameter to be filled, and then determine malfunction.
N groups historical data is to be more than the data of setting value with real-time status data similarity in step (2).
Step (2) is specially:The history shape of all historical datas in database is calculated using cosine similarity measure
Historical data, is ranked up by state data and the similarity for implementing status data according to similarity is descending, and then N before selection
Group historical data.
Described similarity is obtained by equation below:
Wherein, aiFor the vector of real-time status data composition, ajFor the history in one group of historical data of similarity to be asked for
The vector of status data composition, sim (ai,aj) it is aiWith ajSimilarity.
Step (3) forms fault diagnosis matrix:
(31) malfunction in every group of historical data is represented to form malfunction numerical value using digital form, and then will
Historical state data and malfunction numerical value are arranged in order history of forming data vector;
(32) clooating sequence of each data in historical data vector is used to be ranked up real-time status data, by failure shape
State numerical value corresponding position is set to parameter to be filled, forms real time data vector;
(33) all historical data Vector Groups of real time data vector sum are shaped as fault diagnosis matrix.
Matrix fill-in is carried out to fault diagnosis matrix using singular value thresholding algorithm in step (4).
Compared with prior art, the invention has the advantages that:
(1) present invention from database selection with the bigger data of real-time status data similarity as training data, with
Mitigate the operand of matrix fill-in algorithm, improve operation efficiency, select the bigger data of similarity can also as training data
Incoherent data interference is excluded, improves prediction accuracy.
(2) present invention realizes matrix fill-in using singular value thresholding algorithm, so as to using historical data as reference sample, realize
Fault diagnosis, the artificial subjectivity for formulating fuzzy parameter is avoided, meets the otherness between distinct device.
Brief description of the drawings
Fig. 1 is the FB(flow block) of the method for diagnosing faults of the invention based on matrix fill-in.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, a kind of method for diagnosing faults based on matrix fill-in, this method comprise the following steps:
(1) real-time status data to be diagnosed is obtained;
(2) the N group historical data related to real-time status data is extracted from database, every group of historical data includes going through
History status data and corresponding malfunction;
(3) real-time status data and N groups historical data are formed into fault diagnosis matrix, it is to be filled in the fault diagnosis matrix
Parameter is the malfunction corresponding to real-time status data;
(4) matrix fill-in is carried out to fault diagnosis matrix and obtains the numerical value of parameter to be filled, and then determine malfunction.
Real-time status data may be from different platforms in step (1), therefore by based on DBCOM and change notification machine
The power control interface of system realizes the collection of real-time status data, is specifically realized in the ForceControl configuration software based on COM technologies
The change notification mechanism of data object.COM provides a kind of effective data exchange mechanism, referred to as uniform data between application
Transmission mechanism (UDT, Uniform Data Transfer).It is using data object as data entity, and data object then passes through
IDataObject interfaces expose its internal information.As long as CLIENT PROGRAM can be obtained by data object by certain host-host protocol
IDataObject interfaces, later CLIENT PROGRAM can directly accesses data object.
COM provides tie point mechanism to realize both-way communication.In UDT, CLIENT PROGRAM need to only realize IAdviseSink
Interface, wherein OnDataChange member are used for the notification procedure of data object.IDataObject::DAdvise functions are established
Circular connection between CLIENT PROGRAM receiver object and data object, once connection is set up, when data change,
IAdviseSink will be called::OnDataChange functions.
It is concretely comprised the following steps:The configuration engineering created by ForceControl configuration software is first turned on, the newly-built note in database
Volume point temp, as with the data communication point in C++.DbCommOcxEf controls are exactly packaged com component,
Before operation program, we will ensure the registered successes of DbCom.ocx, it is ensured that we can be implemented control, and it is with regard to suitable
It is loaded into a .dll file in process.CDbCommOcxEf object class that same we create also has its 128
CLSID is identified.
CDbCommOcxEf object class:
Static CLSID const clsid=0x3310fa25,0xa027,0x47b3,0x8c, 0x49,0x10,
0x91,0x07,0x73,0x17,0xe9}}
Because CLIENT PROGRAM is only it is to be understood that the IDataObject interface pointer cans of data object directly access data pair
As.Sometimes CLIENT PROGRAM wants to learn the information that track data object changes in time, to obtain latest data.
Therefore we obtain the information of our desired registration points by it, these by stating an object
Information is stored in inside circular connection receiver object by IDataObject interface pointers, realizes data communication.When ours
When registration point information changes, message map mechanism goes to find corresponding event control function, event control function here
It is exactly our IAdviseSink::OnDataChange, by it, we just have updated letter of the registration point in C++ engineerings
Breath.So we are achieved that the change notification mechanism of our data objects.
N groups historical data is to be more than the data of setting value with real-time status data similarity in step (2).
Step (2) is specially:The history shape of all historical datas in database is calculated using cosine similarity measure
Historical data, is ranked up by state data and the similarity for implementing status data according to similarity is descending, and then N before selection
Historical data is organized, sort method uses bubble sort here.
Described similarity is obtained by equation below:
Wherein, aiFor the vector of real-time status data composition, ajFor the history in one group of historical data of similarity to be asked for
The vector of status data composition, sim (ai,aj) it is aiWith ajSimilarity.
Step (3) forms fault diagnosis matrix:
(31) malfunction in every group of historical data is represented to form malfunction numerical value using digital form, and then will
Historical state data and malfunction numerical value are arranged in order history of forming data vector;
(32) clooating sequence of each data in historical data vector is used to be ranked up real-time status data, by failure shape
State numerical value corresponding position is set to parameter to be filled, forms real time data vector;
(33) all historical data Vector Groups of real time data vector sum are shaped as fault diagnosis matrix.
Matrix fill-in is carried out to fault diagnosis matrix using singular value thresholding algorithm (SVT algorithms) in step (4).
Matrix fill-in (Matrix Completion) purpose is part (the not observable in order to be lacked in estimated matrix
Part), can be regarded as using matrix X approximate matrix M, then by the use of the element in X as matrix M in can not observation portion element
Estimation.After existing training data forms matrix, these known information need to meet to assume that data matrix is low-rank,
It can be inferred that unknown part.Due to having carried out similar Sexual behavior mode to training data in 2), so the hypothesis of low-rank is to set up
's.It is formulated then as follows:
Object function:minrank(X);
Constraints:Xi,j=Mi,j,(x,j)∈Ω;
If setting:Y=PΩ(X),
Wherein:
Then above-mentioned film table function and constraints are:Object function:minrank(X);
Constraints:PΩ(X)=PΩ(M);
M is fault diagnosis matrix, and X is the fault diagnosis matrix after filling.
Claims (6)
1. a kind of method for diagnosing faults based on matrix fill-in, it is characterised in that this method comprises the following steps:
(1) real-time status data to be diagnosed is obtained;
(2) the N group historical data related to real-time status data is extracted from database, every group of historical data includes history shape
State data and corresponding malfunction;
(3) real-time status data and N groups historical data are formed into fault diagnosis matrix, parameter to be filled in the fault diagnosis matrix
For the malfunction corresponding to real-time status data;
(4) matrix fill-in is carried out to fault diagnosis matrix and obtains the numerical value of parameter to be filled, and then determine malfunction.
A kind of 2. method for diagnosing faults based on matrix fill-in according to claim 1, it is characterised in that N in step (2)
Group historical data is to be more than the data of setting value with real-time status data similarity.
3. a kind of method for diagnosing faults based on matrix fill-in according to claim 2, it is characterised in that step (2) has
Body is:The historical state data of all historical datas and implementation status number in database are calculated using cosine similarity measure
According to similarity, historical data is ranked up according to similarity is descending, so choose before N group historical datas.
4. a kind of method for diagnosing faults based on matrix fill-in according to claim 3, it is characterised in that described is similar
Degree is obtained by equation below:
<mrow>
<mi>s</mi>
<mi>i</mi>
<mi>m</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>a</mi>
<mi>i</mi>
</msub>
<mo>,</mo>
<msub>
<mi>a</mi>
<mi>j</mi>
</msub>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mi>c</mi>
<mi>o</mi>
<mi>s</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>a</mi>
<mi>i</mi>
</msub>
<mo>,</mo>
<msub>
<mi>a</mi>
<mi>j</mi>
</msub>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>a</mi>
<mi>i</mi>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>a</mi>
<mi>j</mi>
</msub>
</mrow>
<mrow>
<mo>|</mo>
<msub>
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</msub>
<mo>|</mo>
<mo>&times;</mo>
<mo>|</mo>
<msub>
<mi>a</mi>
<mi>j</mi>
</msub>
<mo>|</mo>
</mrow>
</mfrac>
<mo>,</mo>
</mrow>
Wherein, aiFor the vector of real-time status data composition, ajFor the historic state in one group of historical data of similarity to be asked for
The vector of data composition, sim (ai,aj) it is aiWith ajSimilarity.
A kind of 5. method for diagnosing faults based on matrix fill-in according to claim 1, it is characterised in that step (3) group
It is specially into fault diagnosis matrix:
(31) malfunction in every group of historical data is represented to be formed malfunction numerical value using digital form, and then by history
Status data and malfunction numerical value are arranged in order history of forming data vector;
(32) clooating sequence of each data in historical data vector is used to be ranked up real-time status data, by malfunction number
Value corresponding position is set to parameter to be filled, forms real time data vector;
(33) all historical data Vector Groups of real time data vector sum are shaped as fault diagnosis matrix.
6. a kind of method for diagnosing faults based on matrix fill-in according to claim 1, it is characterised in that in step (4)
Matrix fill-in is carried out to fault diagnosis matrix using singular value thresholding algorithm.
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CN115576733A (en) * | 2022-11-17 | 2023-01-06 | 广州信诚信息科技有限公司 | Intelligent equipment fault diagnosis system based on deep reinforcement learning |
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