CN105590001B - A kind of synthesis importance analysis for the identification of circuit tender spots - Google Patents
A kind of synthesis importance analysis for the identification of circuit tender spots Download PDFInfo
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- CN105590001B CN105590001B CN201511023962.XA CN201511023962A CN105590001B CN 105590001 B CN105590001 B CN 105590001B CN 201511023962 A CN201511023962 A CN 201511023962A CN 105590001 B CN105590001 B CN 105590001B
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- 238000004458 analytical method Methods 0.000 title claims abstract description 17
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 6
- 239000013256 coordination polymer Substances 0.000 claims description 5
- 230000001186 cumulative effect Effects 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 240000001987 Pyrus communis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
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- 238000011156 evaluation Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
Abstract
The present invention provides a kind of synthesis importance analysis for the identification of circuit tender spots, the node number being connected directly using the association different degree description of node with the node, position of the nodes in network topology is described using position different degree, a possibility that nodes itself fail size is described using crash rate different degree, it is cumulative to obtain the synthesis different degree of node.The present invention, which can be analyzed accurately, show that Complex Electronic Systems Based forms component different degree, effectively supports predicting residual useful life or the fail-safe analysis of electronic system.
Description
Technical field
The present invention relates to a kind of importance calculation method, be related to electronic system fragility point analysis, fail-safe analysis and design,
The demand application to different degree such as predicting residual useful life.
Background technique
With the development of the science and technology such as electronic technology, microelectric technique, semiconductor processing technology, electronic system is also more next
Become the indispensable key components of function systems such as control, power, power supply more.Research and practice prove, electric
Subsystem often breaks down or fails earlier than mechanical system etc..Therefore, the highly reliable electronic system of analysis and design, and
Diagnosis, the remaining life for predicting existing electronic system, it has also become ensure total system/equipment, especially aerospace, national defence dress
The Key technology that the system or equipments such as standby, electric power, core are on active service safely.
Therefore, it in order to improve Complex Electronic Systems Based inherent reliability, generally requires to carry out the reliable of circuit in the design phase
Property analysis, discovery is easy to happen the component of trouble or failure, and then carries out consolidation process；Meanwhile for accurate evaluation complexity
The service life of electronic system, and component complete, for predicting residual useful life the physical model at all levels to system is established,
It is often relatively difficult.Therefore, by the circuit structure and electronic component progress Significance Analysis to electronic system, complexity is obtained
The Primary Component of failure is easiest in electronic system, the service life that entire product is characterized with the service life of Primary Component often more closes
The selection of reason.
According to different applicable cases, there are many definition and calculation methods for different degree.1967, B.J.Garnick was proposed
The arrangement for establishing each unit relative importance in system is imagined；It is 1969, that Z.W.Birnbaum is proposed first and producing
The structure importance (structural importance) and probabilistic compct (Birnbaum being widely used in practice
reliability importance)；1974,1975, W.E.Vesely, J.B.Fussell, P.Chatterrjee successive
Propose degree of importance for minimum cut sets concept；1975, H.E.Lambert proposed criticality importance (criticality
Importance), the concepts such as sequential different degree, hazard ratio factor different degree；1975, R.E.Barlow and P.Proschan
The B-P different degree (B-P importance) of proposition；1977, D.A.Butler was defined a kind of independent of the reliable of component
Degree only relies upon the Degrees of Importance of Components C- different degree (Cut importance) and P- different degree (Path of cut set and road collection
importance)；Nineteen eighty-two, K.Nakashim propose variance different degree；1983,1984, P.S.Jakso, Shi Dinghua will
The concept of different degree is generalized to noncoherent system from coherent system；1988, Zhi-JiePan etc. described model
Caro variance different degree (Monte-Carlo variance importance) etc..
Existing different degree method is mostly conducted a research from the angle of failure tree analysis (FTA).Circuit system is abstracted into network mould
Type analyzes its network-critical degree still without comprehensive calculation method.And existing network reliability analysis etc. is mostly from the angle of graph theory
Degree only analyzes the reliability coupled between the different degree and node of structure locating for network node, can not be suitable for circuit system
The demand of fail-safe analysis and design or life prediction.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of comprehensive importance analysis, in sophisticated electronic system
, it can be achieved that the knowledge for the component (referred to as tender spots) for easily breaking down or failing in the network model that system multicomponent device is constituted
Not.
The technical solution adopted by the present invention to solve the technical problems the following steps are included:
(1) node number being connected directly using the association different degree description of node with the node, the association of node are important
DegreeIn formula, Cd(vi)=d (vi) it is node viDegree, d (vi) be and node viThe node being connected directly
Number, n are the sum of network node；
(2) position of the nodes in network topology, the position different degree of node are described using position different degreeIn formula,For node viTightness, d (vij) it is node vjTo node viAway from
From；
(3) a possibility that nodes itself fail size, the failure of node are described using crash rate different degree
Rate different degreeIn formula, λ (vi) it is node viCrash rate；
(4) calculate node viSynthesis different degree K (vi)=CD(vi)+CC(vi)+CP(vi)。
It show that Complex Electronic Systems Based forms component different degree the beneficial effects of the present invention are: can accurately analyze, has
Support predicting residual useful life or the fail-safe analysis of electronic system to effect.
Detailed description of the invention
Fig. 1 is open loop Boost circuit schematic diagram；
Fig. 2 is the equivalent network model of open loop Boost circuit.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and the present invention includes but are not limited to following implementations
Example.
The present invention is directed to the network model of electronic system building, in conjunction with each component, i.e., node in network topology with
The node number (referred to as association different degree) of direct correlation, position (referred to as position different degree) of the node in network topology with
And the crash rate (referred to as crash rate different degree) of node itself, proposing one kind can be used for the identification of circuit tender spots, can be more complete
Face, the method for being truly reflected node (component) different degree.
In conjunction with the network model that Complex Electronic Systems Based composition component is constituted, using each component as a section of network
Point.Synthesis different degree calculation formula of the invention is as follows
K(vi)=CD(vi)+CC(vi)+CP(vi) (1)
In formula, K (vi) --- node viDifferent degree；CD(vi) --- node viIt is associated with different degree；CC(vi) --- node vi
Position different degree；CP(vi) --- node viCrash rate different degree.Wherein,
(1) it is associated with different degree
The association different degree of node describes the node number being connected directly with the node, with the degree index C of noded
(vi) indicate, after it is normalized, the association different degree C of nodeD(vi) calculation formula be
In formula, Cd(vi)=d (vi), it is node viDegree, d (vi) be and node viThe node number being connected directly, n are net
The sum of network node.
(2) position different degree
Position different degree is for describing position of the nodes in network topology, with the tightness index C of nodec
(vi) indicate, after it is normalized, the position different degree C of nodeC(vi) calculation formula be
In formula,For node viTightness, n be network node sum, d (vij) it is node vjIt arrives
Node viDistance (having distance between two nodes of associated relation here is 1).
(3) crash rate different degree
For crash rate different degree for describing a possibility that nodes itself fail size, value is bigger, corresponding
The reliability of node is lower.If node viCrash rate be λ (vi), it is normalized, the crash rate different degree of node
CP(vi) calculation formula be
In formula, λ (vi) it is node viCrash rate, can be calculated using Stress Analysis Method.
For the present invention by taking open loop Boost circuit as an example, open loop Boost circuit is a kind of non-isolation DC-DC transformation of booster type
Circuit, which, which exists, is charged and discharged two kinds of courses of work, and circuit structure is as shown in Figure 1.
The corresponding network model of 1 open loop Boost circuit of structure figures, as shown in Figure 2.
On the basis of Fig. 2 equivalent network model, different degree calculating is carried out, the results are shown in Table 1.
The Significance Analysis result of 1 open loop Boost circuit component of table
As can be known from Table 1, the importance value of capacitor C is maximum, is 1.0755, is the Primary Component of Boost converter.Cause
This, can characterize the service life of entire Boost converter with the service life of capacitor in Boost converter.This conclusion and Lahyani
A, the conclusion of the researchs such as Lifeng W is consistent, demonstrates effectiveness of the invention.
Claims (1)
1. a kind of synthesis importance analysis for the identification of circuit tender spots, it is characterised in that include the following steps:
(1) node number being connected directly using the association different degree description of node with the node, the association different degree of nodeIn formula, Cd(vi)=d (vi) it is node viDegree, d (vi) be and node viThe node being connected directly
Number, n are the sum of network node；
(2) position of the nodes in network topology, the position different degree of node are described using position different degreeIn formula,For node viTightness, d (vij) it is node vjTo node viAway from
From；
(3) a possibility that nodes itself fail size, the crash rate weight of node are described using crash rate different degree
It spendsIn formula, λ (vi) it is node viCrash rate；
(4) calculate node viSynthesis different degree K (vi)=CD(vi)+CC(vi)+CP(vi)。
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| CN201511023962.XA CN105590001B (en) | 2015-12-30 | 2015-12-30 | A kind of synthesis importance analysis for the identification of circuit tender spots |
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| CN201511023962.XA CN105590001B (en) | 2015-12-30 | 2015-12-30 | A kind of synthesis importance analysis for the identification of circuit tender spots |
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| CN105590001A CN105590001A (en) | 2016-05-18 |
| CN105590001B true CN105590001B (en) | 2019-01-01 |
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| CN107659653B (en) * | 2017-09-29 | 2020-09-25 | 北京邮电大学 | NDN network measurement data caching method and device, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592440A (en) * | 2012-02-14 | 2012-07-18 | 清华大学 | Diagnostic technique for road network key nodes |
| CN102880799A (en) * | 2012-09-24 | 2013-01-16 | 西北工业大学 | Method for comprehensively evaluating importance of complicated network node based on multi-attribute decision-making |
| CN104156507A (en) * | 2014-07-23 | 2014-11-19 | 西北工业大学 | Method used for vulnerability sorting of aircraft components |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030009298A1 (en) * | 2001-03-23 | 2003-01-09 | International Business Machines Corporation | Field-based similarity search system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592440A (en) * | 2012-02-14 | 2012-07-18 | 清华大学 | Diagnostic technique for road network key nodes |
| CN102880799A (en) * | 2012-09-24 | 2013-01-16 | 西北工业大学 | Method for comprehensively evaluating importance of complicated network node based on multi-attribute decision-making |
| CN104156507A (en) * | 2014-07-23 | 2014-11-19 | 西北工业大学 | Method used for vulnerability sorting of aircraft components |
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