CN105955243A - Fault-case-based plane diagnosis and maintenance method and apparatus - Google Patents
Fault-case-based plane diagnosis and maintenance method and apparatus Download PDFInfo
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- CN105955243A CN105955243A CN201610403911.8A CN201610403911A CN105955243A CN 105955243 A CN105955243 A CN 105955243A CN 201610403911 A CN201610403911 A CN 201610403911A CN 105955243 A CN105955243 A CN 105955243A
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- Prior art keywords
- maintenance
- fault
- record
- troubleshooting
- case
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24048—Remote test, monitoring, diagnostic
Abstract
The disclosure provides a fault-case-based plane diagnosis and maintenance method and apparatus. The method comprises: arrangement of historical maintenance records of faults of a plane is carried out to generate a maintenance database; characteristics of faults of the plane are obtained; on the basis of the fault characteristics, all maintenance ways for solving the fault characteristics are searched in the maintenance database; fault elimination success rates of the maintenance ways are calculated; and the maintenance ways are displayed based on the fault elimination success rates. With the method and apparatus, the maintenance efficiency of a plane is improved and the operation cost of the plane maintenance is lowered.
Description
Technical field
The disclosure relates generally to the diagnosis and repair field of airplane fault.Particularly, a kind of base is related to
Aircraft diagnosis and repair method and device thereof in fault case.
Background technology
In aircraft maintenance, identical phenomenon of the failure is likely due to what different reason caused, because of
This, may need to implement different maintenance process for identical phenomenon of the failure, and this is accomplished by
Repair technician, is tieed up so that it is determined which should be implemented so that fault is implemented diagnosis by rich experience
Process of repairing is to solve this phenomenon of the failure.
But above-mentioned maintenance mode is higher to the requirement (particularly in terms of experience) of repair technician.
Airline's troubleshooting at present is still to consult maintenance class handbook, and goes back while consulting handbook
Consult substantial amounts of engineering technical document.Such as, repair technician is based on phenomenon of the failure, by work hands
The instruction of volume or engineering technical document attempts various troubleshooting mode, successively until this fault is arranged
Remove.But which is the most time-consuming but also needs the highest maintenance cost.
Along with the development of World Economics, Chinese Civil Aviation will face more keen competition and
Challenge.Airline is more urgent to the demand of the maintenance efficiency that cuts operating costs, improves.With
Time, main manufacturer needs fault diagnosis technology based on Maintenance Cases is carried out more deep grinding
Studying carefully, the design for aircraft improves offer foundation.
Therefore be badly in need of a kind of efficiently and the scheme of economy to implement diagnosis and the maintenance of airplane fault.
Summary of the invention
To this end, the first aspect of the disclosure provides a kind of aircraft based on fault case diagnosis dimension
Repair method, including step: implement to arrange, with life to the history maintenance record of airplane fault
Become Maintenance plan；Obtain the fault signature of airplane fault；Based on described fault signature described
Maintenance plan finds out all maintenance modes solving described fault signature；Calculate described dimension
Repair the troubleshooting success rate of mode；Described maintenance mode is shown based on described troubleshooting success rate.
In one embodiment, the described history maintenance record to airplane fault is implemented to analyze, with
The step generating Maintenance plan includes: obtain the history maintenance record of airplane fault；To described
History maintenance record is analyzed, to reject unworthy troubleshooting record；By predetermined data knot
Structure, rebuilds described history maintenance record；Described mantenance data is generated based on predetermined form
Storehouse.
In one embodiment, described Maintenance plan includes: case essential information, fault
Sign, maintenance mode, case classification.
In one embodiment, described fault signature includes at least one information following: type,
ATA chapters and sections, failure code, the key word of failure-description.
In one embodiment, described described maintenance is shown by described based on described troubleshooting success rate
The step of mode includes: show maintenance mode from high to low by troubleshooting success rate.
The second aspect of the disclosure provides a kind of aircraft diagnosis and repair based on fault case dress
Put, including: building library unit, it is for implementing whole to the history maintenance record of airplane fault
Reason, to generate Maintenance plan；Feature acquiring unit, it is for obtaining the fault of airplane fault
Feature；Searching unit, it is for searching in described Maintenance plan based on described fault signature
Go out to solve all maintenance modes of described fault signature；Computing unit, it is used for calculating described dimension
Repair the troubleshooting success rate of mode；Output unit, it is for showing institute based on described troubleshooting success rate
State maintenance mode.
In one embodiment, build library unit described in include: acquisition module, it flies for acquisition
The history maintenance record of machine fault；Removing module, it is for carrying out described history maintenance record
Analyze, to reject unworthy troubleshooting record；Building module, it is for by predetermined data knot
Structure, rebuilds described history maintenance record；Generation module, it is for based on predetermined form
Generate described Maintenance plan.
In one embodiment, described Maintenance plan includes: case essential information, fault
Sign, maintenance mode, case classification.
In one embodiment, described fault signature includes at least one information following: type,
ATA chapters and sections, failure code, the key word of failure-description.
In one embodiment, described output unit shows maintenance from high to low by troubleshooting success rate
Mode.
By present invention achieves following beneficial effect:
(1) efficiency of airplane fault diagnosis is improved: airline's troubleshooting is to consult maintenance at present
Class handbook is main, and also to consult substantial amounts of engineering technical document while consulting handbook, and this gives
Bringing bigger difficulty according to the troubleshooting of handbook, the present invention, by based on Maintenance Cases, holds concurrently
The historical statistical data of Gu system, and combine with other method for diagnosing faults, application retrieval
With self study instrument, it is achieved high-grade intelligent diagnoses, can effectively solve tradition handbook troubleshooting and side
Formula is time-consumingly grown, workload is big and the inaccurate situation of fault location, airline service engineer
Can quickly position failure cause, improve troubleshooting efficiency.
(2) aircraft maintenance cost can be effectively reduced: provide maintenance level and troubleshooting efficiency milli
To be the effective way saving maintenance cost without query.The present invention can associate skill by case
Art finds fault solution quickly and accurately, thus improves under tradition troubleshooting mode relatively low
Troubleshooting efficiency, reaches substantially to reduce the purpose of aircraft maintenance and operation cost.
Accompanying drawing explanation
By reading retouching in detail with reference to made non-limiting example is made of the following drawings
Stating, the other features, objects and advantages of the disclosure will become more apparent:
Fig. 1 shows aircraft based on the fault case diagnosis of an embodiment according to the disclosure
Method for maintaining flow chart；
Fig. 2 shows the method stream generating Maintenance plan of an embodiment according to the disclosure
Cheng Tu；
Fig. 3 shows the data structure of the maintenance record of an embodiment according to the disclosure；With
And
Fig. 4 shows aircraft based on the fault case diagnosis of an embodiment according to the disclosure
The module map of maintenance unit.
Detailed description of the invention
In the specific descriptions of following preferred embodiment, by with reference to constituting a disclosure part
Appended accompanying drawing.Appended accompanying drawing has been illustrated by way of example the spy being capable of the disclosure
Fixed embodiment.The embodiment of example is not intended as the limit all embodiments according to the disclosure.
It is appreciated that on the premise of without departing from the scope of the present disclosure, it is possible to use other embodiments,
Structural or the amendment of logicality can also be carried out.Therefore, following specific descriptions not limit
Property processed, and the scope of the present disclosure is defined by the claims appended hereto.Although additionally, explanation
Book describes the step of method in a particular order, but this does not requires that or implies necessary
Perform these operations according to this particular order, or have to carry out the most shown operation ability
Realizing desired result, on the contrary, the step of description can change execution sequence.Additionally or standby
Multiple steps are merged into a step and are performed by selection of land, it is convenient to omit some step, and/or will
One step is decomposed into multiple step and performs.
The inventive concept of the present invention is: by (uniting history maintenance record or Maintenance Cases below
It is referred to as maintenance record) implement to analyze, thus sum up in actual maintenance process for various events
The success rate of the maintenance mode that barrier phenomenon is used, and come according to success rate order from high to low
Select maintenance mode, thus improve the successful probability of maintenance, improve maintenance efficiency, save dimension
Accomplish this.Fig. 1 shows a kind of based on fault case the aircraft diagnosis and repair according to the disclosure
Method flow diagram, is described in detail to this programme below with reference to Fig. 1.
In step s 102, implement to arrange to the history maintenance record of airplane fault, to generate
Maintenance plan, it may be assumed that on the basis of analyzing civil aircraft history maintenance record, carry out case
Screen, reject and merge work, and carry out in-depth analysis research for typical case's Maintenance Cases,
Finally represent specification according to the record formulated, formed and be available for airplane fault diagnosis and maintenance application
The maintenance record of reference, in conjunction with the schematic diagram shown in Fig. 2, its flow process includes:
First, in step S102-1, obtain airplane fault history maintenance record or, it may be assumed that
Each maintenance record is derived from history maintenance record.Wherein this maintenance record can record in office
In the file of meaning form.
Secondly, in step S102-2, described history maintenance record is analyzed, to pick
Except unworthy troubleshooting record.Some maintenance notes without reference value are included in maintenance record
Record, such as, replaces reading lamp because reading lamp damages, and these maintenances belong to simple maintenance,
Therefore reference value is not had due to what its maintenance mode determined that.
Again, in step S102-3, by predetermined expression structure, rebuild described in go through
History maintenance record, including being again grouped maintenance record, merge, removing redundancy etc..
Maintenance record is that the knowledge of fault diagnosis system of civil aircraft supports, for airliner
For failure logging, the information that maintenance record comprises is the most, but also contains Fault Isolation
Handbook, Fault Reporting Manual, servicing manual, system diagram handbook and distribution chart handbook etc. are believed
Breath.Along with the change of aircraft utilization state, a lot of maintenance record/cases all can have corresponding adjustment,
This is accomplished by the renewal of maintenance record, safeguards relatively flexibly, in the present invention, and Maintenance plan
In each bar maintenance record framework use dispersion tissue case representation structure.
For the ease of describing, below maintenance record is claimed to become case.One complete case master
To be constituted jointly by the relative recording of case essential information, fault signature and troubleshooting mode.Therefore
In the Maintenance plan of the present invention, each bar maintenance record after arrangement mainly contains: case
Essential information, failure symptom, maintenance mode and case classification four category information.Hereinafter see Fig. 3
Four category informations are illustrated.
1. case classification
For the ease of each case is implemented inquiry, case can be implemented to divide by Maintenance plan
Class, has recorded the foundation of case classification in case rating information.
In one embodiment, the fault of aircraft system is implemented classification according to system.For existing
For aircraft system, contain air-conditioning, flight control, electromotor, undercarriage, fuel oil,
More than 30 the one-level subsystem such as lubricating oil, also has the two of lower level time below each one-level subsystem
Level subsystem, manages the fault of aircraft system according to these system structure, the most permissible
Use grading search technology to improve recall precision when retrieval, be on the other hand also to meet engineering dimension
Repair the cognitive custom for airplane fault in personnel's routine work.
In another embodiment, the fault of aircraft system is implemented classification according to the order of severity.
2. case essential information
Case essential information is the standardization describing framework of fault case.Event shown in the present invention
Barrier case standardization describing framework mainly includes following a few category information:
Case No.: in native system, all numberings are all referring to " aeronautical product technical data writes specification "
Write.
Task number: task number represents this fault numbering in Fault Isolation Manual, Fault Isolation
Handbook is that aircraft supplier is supplied to airline and the rapidly removing faults of aircraft maintenance company
Important references handbook, most course line fault can by this handbook inquiry obtain.
DTC: being DTC corresponding in Fault Isolation Manual, Main Function is and handbook
In each failure-description corresponding.Each case may have multiple failure-description, the most right
Should multiple DTCs.
Repair message: the relevant instruction letter that repair message is obtained after mainly being tested by BITE
Breath, can help to find out various fault.Mainly include special signal lights, digital code and
Comprise or do not comprise one group of English phrase of digital code.
Failure cause: cause the description of certain fault possible cause.Certain specific aircraft system event
Barrier, the reason of its correspondence may have multiple.
Related data: related data refers to be applied to other related datas of this fault case, bag
Include system diagram handbook SSM (System Schematics Manual) or distribution chart handbook
WDM(Wiring Diagram Manual)。
Diagnostic result: the failure reason analysis that this case is final, the trouble unit being diagnosed to be.
The analysis of causes: this field essential record maintainer, according to the feature of this case, specifically divides
The analysis generation of case, development characteristic information, it is simple to provide for utilizing case to carry out diagnosis in the future
More useful informations.
Case credibility: use fuzzy mathematics knowledge to define case herein and may believe that degree.
Case uses frequency: uses the number of times that frequency representative case is used, often uses a case
Example, adds 1 by the use frequency of case, thus can distinguish common case by using frequency
Example and non-common case.
CROSS REFERENCE: the description of main some other CROSS REFERENCE providing expert's case, with table
Reach the interdependence between case.
3. failure symptom
Failure symptom number: constitute similar with Case No..
Failure symptom describes: mainly store the description information to phenomenon of the failure, engineering maintenance personnel
Obtain the description information to fault by flying quality is analyzed or organized exchange, can use
Word describes, it would however also be possible to employ formula is expressed.
Sign variable type: include two types, definitiveness numerical value sign and uncertainty numerical value
Sign.
Data unit: the unit of data.
Data value: for definitiveness numerical value sign, may have concrete parameter value can express this
The details of sign.
Fuzzy relation value: for uncertainty numerical value sign, needs to describe event with fuzzy language
Barrier sign.The language of language amount in expertise is obtained herein true by the fuzzy logic logic of language
Value.
Credibility: the credibility of failure symptom, as the credibility of case defines.
Weight: weight i.e. weights, represent sign occur journey is affected for whole case
Degree.1.0 represent case is determined by it, and 0.0 represents this sign with case is entirely without relation.Example
As, for the fault of leakage of oil, the weight of oil leakage alarm display lamp is 1.
4. maintenance mode/step
Maintenance step number: constitute similar with failure symptom.
Maintenance describes: case may be corresponding multiple maintenance steps.This field is mainly expressed
Each make content.
Task number: the project in the servicing manual corresponding to this step in maintenance process.
Illustrate: some explanations to this maintenance step.
Finally, in step S102-4, the maintenance record after last arrangement by predetermined lattice
Formula generates the Maintenance plan being available for searching.
In step S104, obtain the fault signature of airplane fault, wherein said fault signature
Can be the one or more information in above-mentioned data structure in failure symptom.
Concrete, when maintainer finds that aircraft has fault, maintainer obtains aircraft event
The fault signature of barrier is for searching corresponding maintenance mode in Maintenance plan.Wherein, should
Fault signature can be the one or more information in failure symptom, such as, failure symptom number,
Failure symptom description etc..
In step s 106, find out in described Maintenance plan based on described fault signature
All maintenance modes of corresponding described fault signature and repair message.Such as, for fault signature
" leakage of oil ", its maintenance mode has A, B, C tri-kinds, then finds out all three maintenance mode
With corresponding repair message.
In step S108, calculate the various maintenance modes in all maintenance modes found out
Troubleshooting success rate.
Concrete, after finding out all maintenance modes, need to calculate each of this similar fault of solution
Plant the troubleshooting success rate of maintenance mode.Such as, when fault signature is leakage of oil, its be probably by
A damage in tri-parts of a, b, c causes, and the most first finds out all solutions
The certainly maintenance mode of this problem, and list the troubleshooting success rate of each maintenance mode.Assume leakage of oil
Fault has 10 examples, wherein by troubleshooting 5 example successful after replacing parts a, by replacement portion
Success troubleshooting 3 example after part b, by troubleshooting 2 example successful after replacing parts c, then replaces parts
The troubleshooting success rate of a is 50%, and the troubleshooting success rate replacing parts b is 30%, replaces parts
The troubleshooting success rate of c is 20%.That is: troubleshooting success rate=troubleshooting quantity/similar fault sum.
In step s 110, row is shown from high to low by the troubleshooting success rate of each maintenance mode
Therefore mode.Such as, failure symptom is described as oil leakage alarm, finds should fault by searching
The maintenance mode of feature has A, B, C tri-kinds, and wherein the troubleshooting success rate of A is 30%, B
Troubleshooting success rate be 50%, the troubleshooting success rate of C is 20%, the most first demonstrates mode B,
Display mode A and mode C the most successively.
The invention also discloses a kind of aircraft diagnosis and repair device based on fault case.Such as Fig. 4
Shown in, this device 400 includes: build library unit 401, and it is for tieing up the history of airplane fault
Repair record to implement to arrange, to generate Maintenance plan；Feature acquiring unit 402, it is used for obtaining
Take the fault signature of airplane fault；Searching unit 403, it is for existing based on described fault signature
Described Maintenance plan finds out all maintenance modes solving described fault signature；Calculate single
Unit 404, it is for calculating the troubleshooting success rate of described maintenance mode；Output unit 405, its
For showing described maintenance mode based on described troubleshooting success rate.
Below in conjunction with method flow, the device shown by the disclosure is illustrated:
In step s 102, build library unit 401 the history maintenance record of airplane fault is implemented
Arrange, to generate Maintenance plan, it may be assumed that on the basis analyzing civil aircraft history maintenance record
On, carry out case screening, reject and merge work, and carry out deeply for typical case's Maintenance Cases
Enter analysis and research, finally represent that specification, formation are available for airplane fault and examine according to the record formulated
Break and the maintenance record of maintenance application reference.
Wherein, build library unit 401 described in include: acquisition module, it is used for obtaining aircraft event
The history maintenance record of barrier；Removing module, it is for being analyzed described history maintenance record,
To reject unworthy troubleshooting record；Building module, it is for by predetermined data structure, weight
Newly constructed described history maintenance record；Generation module, it is for generating institute based on predetermined form
State Maintenance plan.The running building library unit 401 is as follows:
In step S102-1, acquisition module obtain airplane fault history maintenance record or,
That is: from history maintenance record, derive each maintenance record.Wherein this maintenance record can record
In the file of arbitrary format.
In step S102-2, described history maintenance record is analyzed by removing module, with
Reject unworthy troubleshooting record.Some maintenance notes without reference value are included in maintenance record
Record, such as, replaces reading lamp because reading lamp damages, and these maintenances belong to simple maintenance,
Therefore reference value is not had due to what its maintenance mode determined that.
In step S102-3, build module and press predetermined expression structure, rebuild described
History maintenance record, including being again grouped maintenance record, merge, removing redundancy
Deng.
In step S102-4, generation module is pressed the maintenance record after last arrangement predetermined
Form generates the Maintenance plan being available for searching.
In step S104, feature acquiring unit 402 obtains the fault signature of airplane fault,
Wherein said fault signature can be one or more in failure symptom in above-mentioned data structure
Information.
Concrete, when maintainer finds that aircraft has fault, feature acquiring unit 402 obtains
Take the fault signature of airplane fault for searching corresponding maintenance mode in Maintenance plan.
Wherein, this fault signature can be the one or more information in failure symptom, such as, fault
Sign number, failure symptom description etc..
In step s 106, unit 403 is searched based on described fault signature at described maintenance number
According to all maintenance modes and the repair message that find out corresponding described fault signature in storehouse.Such as,
For fault signature " leakage of oil ", its maintenance mode has A, B, C tri-kinds, then find out all this
Three kinds of maintenance modes and corresponding repair message.
In step S108, computing unit 404 calculates in all maintenance modes found out
The troubleshooting success rate of various maintenance modes.
Concrete, after finding out all maintenance modes, need to calculate each of this similar fault of solution
Plant the troubleshooting success rate of maintenance mode.Such as, when fault signature is leakage of oil, its be probably by
A damage in tri-parts of a, b, c causes, and the most first finds out all solutions
The certainly maintenance mode of this problem, and list the troubleshooting success rate of each maintenance mode.Assume leakage of oil
Fault has 10 examples, wherein by troubleshooting 5 example successful after replacing parts a, by replacement portion
Success troubleshooting 3 example after part b, by troubleshooting 2 example successful after replacing parts c, then replaces parts
The troubleshooting success rate of a is 50%, and the troubleshooting success rate replacing parts b is 30%, replaces parts
The troubleshooting success rate of c is 20%.That is: troubleshooting success rate=troubleshooting quantity/similar fault sum.
In step s 110, output unit 405 by the troubleshooting success rate of each maintenance mode from
High to Low display troubleshooting mode.Such as, failure symptom is described as oil leakage alarm, sends out by searching
Now to the maintenance mode of fault signature having A, B, C tri-kinds, wherein the troubleshooting success of A
Rate is 30%, and the troubleshooting success rate of B is 50%, and the troubleshooting success rate of C is 20%, then export
Unit 405 first demonstrates mode B, then display mode A and mode C successively.
Although the device 400 of this example is illustrated the most in the diagram, but illustrate at Fig. 4
One or more unit can merged, separate, rearrange, omit, remove and/or with appoint
Where formula is implemented.Further, the unit of example and module can by hardware, software,
Firmware and/or any of hardware, software and/or firmware are implemented in combination in.More generally, example
Said units in any one can by one or more circuit, programmable processor,
Special IC (ASIC), programmable logic device (PLD) and/or field-programmable
Logic device (FPLD) etc. realizes.
It is obvious to a person skilled in the art that the disclosure is not limited to above-mentioned one exemplary embodiment
Details, and in the case of without departing substantially from the spirit or essential attributes of the disclosure, it is possible to it
His concrete form realizes embodiment of the disclosure.Therefore, in any case from the point of view of, all should be by reality
Execute example and regard exemplary as, and be nonrestrictive.Additionally, it will be evident that " including " one
Word is not excluded for other elements and step, and wording " one " is not excluded for plural number.Device right is wanted
The multiple elements asking middle statement can also be realized by an element.The first, the second word such as grade is used
Represent title, and be not offered as any specific order.
Claims (10)
1. an aircraft diagnosis and repair method based on fault case, including step:
Implement to arrange, to generate Maintenance plan to the history maintenance record of airplane fault；
Obtain the fault signature of airplane fault；
In described Maintenance plan, the described fault of solution is found out special based on described fault signature
The all maintenance modes levied；
Calculate the troubleshooting success rate of described maintenance mode；
Described maintenance mode is shown based on described troubleshooting success rate.
Method the most according to claim 1, the wherein said history to airplane fault is keeped in repair
Record is implemented to analyze, and includes generating the step of Maintenance plan:
Obtain the history maintenance record of airplane fault；
Described history maintenance record is analyzed, to reject unworthy troubleshooting record；
By predetermined data structure, rebuild described history maintenance record；
Described Maintenance plan is generated based on predetermined form.
Method the most according to claim 1, wherein said Maintenance plan includes: case
Example essential information, failure symptom, maintenance mode, case classification.
Method the most according to claim 1, wherein said fault signature include following at least
A kind of information: type, ATA chapters and sections, failure code, the key word of failure-description.
Method the most according to claim 1, wherein said is become based on described troubleshooting as described
Power shows that the step of described maintenance mode includes: show maintenance from high to low by troubleshooting success rate
Mode.
6. an aircraft diagnosis and repair device based on fault case, including:
Building library unit, it is for implementing to arrange to the history maintenance record of airplane fault, to generate
Maintenance plan；
Feature acquiring unit, it is for obtaining the fault signature of airplane fault；
Searching unit, it is for finding out in described Maintenance plan based on described fault signature
Solve all maintenance modes of described fault signature；
Computing unit, it is for calculating the troubleshooting success rate of described maintenance mode；
Output unit, it is for showing described maintenance mode based on described troubleshooting success rate.
Device the most according to claim 6, wherein said library unit of building includes:
Acquisition module, it is for obtaining the history maintenance record of airplane fault；
Removing module, it is for being analyzed described history maintenance record, valueless to reject
Troubleshooting record；
Building module, it, for by predetermined data structure, rebuilds described history maintenance note
Record；
Generation module, it is for generating described Maintenance plan based on predetermined form.
Device the most according to claim 6, wherein said Maintenance plan includes: case
Example essential information, failure symptom, maintenance mode, case classification.
Device the most according to claim 6, wherein said fault signature include following at least
A kind of information: type, ATA chapters and sections, failure code, the key word of failure-description.
Device the most according to claim 6, described output unit by troubleshooting success rate from
High to Low display maintenance mode.
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