CN109543251A - A kind of airborne equipment development guarantee grade distribution method - Google Patents
A kind of airborne equipment development guarantee grade distribution method Download PDFInfo
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Abstract
A kind of airborne equipment development guarantee grade distribution method, which is characterized in that be based on flow chart, be associated by airborne equipment functional fault to aircraft disabler；After clearly requiring the airborne equipment functional fault for determining development guarantee grade, after judging that the specific failure state of aircraft that the functional fault can be associated with is associated with corresponding failure state, it is allocated according to the basic distribution principle proposed in SAE ARP4754A " civil aircraft and system development guide ".The grade that the present invention is suitable for precarious position caused by aircraft disabler determines.It develops and guarantees that the purpose that grade determines is to guarantee that grade formulates corresponding working procedure and development standard in the development process of system from the angle of safety for corresponding develop, the mistake in design is minimized.The present invention guarantees that ranking score is matched in principle in general development, guarantees grade allocation process diagram based on developing, takes the method judged step by step, and the development for specifying airborne equipment function guarantees grade.
Description
Technical field
The invention belongs to aircraft safety design and evaluation areas, are related to a kind of airborne equipment function based on flow chart and grind
System guarantees the distribution method of grade, is mainly used for determining that the development of equipment guarantees grade, and formulate corresponding control on this basis
Processing procedure sequence and method minimize the mistake in design.
Background technique
During modern aircraft system development, especially during the seaworthiness certification of civil aircraft, safety is set
Meter is indispensable a part with assessment, runs through the entire lead time, to ensure that development results meet security requirement.With
The continuous improvement of modern aircraft system complexity and integrated level, Airworthiness Examination department increasingly pay close attention in development process there may be
Mistake, as the random failure of component itself, generated in development process mistake can also eventually affect aircraft/system
Performance.But being different from random failure can be by probability of happening calculating come quantitative assessment, and calculating can not be passed through by developing mistake
The method of probability assesses their generation.Therefore for mistake is developed, a kind of process should be established to have ensured these mistakes
Through being reduced to acceptable level according to demanding class appropriate.This process is referred to as developing guarantee process, corresponding to grind
The height of process Stringency processed is called development and guarantees grade.
In SAE ARP4754A " civil aircraft and system development guide ", proposes development and guarantee that ranking score is matched basic
Principle gives the top-down distribution method using fault tree as typical case in specific operable distribution method: first
First in rudimentary system safety evaluation, guaranteed according to the development that the classification of aircraft disabler state distributes top layer event etc.
Grade；Then after top-level functionality being decomposed to multiple subfunctions, the development for distributing subfunction guarantees grade；It is finally that function is further
Equipment is decomposed to, is developed for equipment distribution and guarantees grade.
A kind of top-down distribution method based on fault tree that SAE ARP4754A is provided, clear layer, thinking are bright
Really, but due to needing to draw more complicated fault tree, working efficiency needs to be further increased.
Summary of the invention
The object of the invention
Present invention is primarily based on flow charts, take bottom-up distribution method, realize the distribution developed and guarantee grade.This
Invention mainly proposes a kind of bottom-up airborne equipment development guarantee grade distribution method based on flow chart.Pass through process
Figure, the disabler of equipment is associated with the failure of aircraft top-level functionality, by functional redundancy and device backup situation
Choice, gradually judgement show that the development of airborne equipment function guarantees grade.
The technical scheme is that
The present invention is based on flow charts, are associated by airborne equipment functional fault to aircraft disabler.Clearly needing
It determines after developing the airborne equipment functional fault for guaranteeing grade, the aircraft for judging that the functional fault can be associated with specifically loses
Effect state (such as failure state, dangerous failure state, great failure state of disaster).It is associated with corresponding failure state
Afterwards, it is allocated according to the basic distribution principle proposed in SAE ARP4754A, below by taking the failure state of disaster as an example, explanation
Specific allocation flow describes the scheme of invention.
A kind of airborne equipment development guarantees grade distribution method, is based on flow chart, by airborne equipment functional fault to flying
Machine disabler is associated；After clearly requiring the airborne equipment functional fault for determining development guarantee grade, the function is judged
After the specific failure state of the aircraft that failure can be associated with is associated with corresponding failure state, according to the SAE ARP4754A " people
With aircraft and system development guide " in propose basic distribution principle be allocated.
Specific step is as follows:
Step 1: combing out it needs to be determined that developing the airborne equipment inventory for guaranteeing grade, and combing out airborne equipment need to
Distribute the function of developing and guarantee；
Step 2: will need to distribute the disabler developed and guarantee that the airborne equipment functional fault of grade is associated with aircraft
On, specifying the airborne equipment functional fault will lead to the failure states such as disaster, dangerous or great；
Step 3: guaranteeing grade allocation flow in conjunction with developing according to the failure state that airborne equipment functional fault is associated with
Figure, follows the steps below distribution:
1) whether airborne equipment functional fault has been associated with the failure state of aircraft disaster, if selection is, according to step
2-5, which develop, guarantees that ranking score is matched, if selection is no, directly execution step 6-14, which develop, guarantees that ranking score is matched；
2) judge in the design scheme of aircraft system, whether the function of the failure has independent Redundancy Design, if choosing
Select no, then functions of the equipments development guarantees that grade is assigned as A, if selection is, enters and judges in next step；
3) judge in Redundancy Design, whether the quantity of redundancy is more than or equal to 2, if selection is functions of the equipments
Development guarantees that grade is assigned as C, if functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
4) judge in only one Redundancy Design there is whether primary function and standby functions have any different, if selection
No, then functions of the equipments development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
5) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that ranking score is matched
For A, if selection is no, functions of the equipments development guarantees that grade is assigned as C；
6) judge whether airborne equipment functional fault has been associated with the failure state of aircraft danger, if selection is, according to
Step 7-10, which develop, guarantees that ranking score is matched, if selection is no, directly executes step 11-14 and carries out developing guarantee ranking score
Match；
7) judge in the design scheme of aircraft system, whether the function of the failure has independent Redundancy Design, if choosing
Select no, then functions of the equipments development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
8) judge in Redundancy Design, judge whether the quantity of redundancy is more than or equal to 2, if selection is equipment
Function development guarantees that grade is assigned as D, if functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
9) difference for whether having primary function and standby functions in only one Redundancy Design is judged, if selection
No, then functions of the equipments development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
10) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that ranking score is matched
For B, if selection is no, functions of the equipments development guarantees that grade is assigned as D；
11) judge in the design scheme of aircraft system, whether which has independent Redundancy Design, if selection
No, then functions of the equipments development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
12) judge in Redundancy Design, whether the quantity of redundancy is more than or equal to 2, if selection is functions of the equipments
Development guarantees that grade is assigned as E, if i.e. functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
13) difference for whether having primary function and standby functions in only one Redundancy Design is judged, if selection
No, then functions of the equipments development guarantees that grade is assigned as D, if selection is, enters and judges in next step；
14) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that ranking score is matched
For C, if selection is no, functions of the equipments development guarantees that grade is assigned as E；
Step 4: guaranteeing grade according to the development that allocation result combs out each function of airborne equipment, functions of the equipments are formed
It develops and guarantees that ranking score matches inventory.
The functions of the equipments, which are developed, guarantees grade A, B, C, D, E by SAE ARP4754A " civil aircraft and system development
Guide " definition.The functional fault of the aircraft includes the failure state of disaster, dangerous failure state.The function of equipment is lost
Effect is associated with the failure of aircraft top-level functionality, and by the choice to functional redundancy and device backup situation, gradually judgement is obtained
The development of airborne equipment function guarantees grade.The method is a kind of method of salary distribution from bottom to top.The method is suitable for flying
The grade of precarious position caused by machine disabler determines.
The invention has the advantages that
A kind of airborne equipment development guarantees that grade distribution method is breached based on the top-down method of salary distribution of fault tree, directly
Connect the disabler of equipment is associated with the influence grade of aircraft top-level functionality failure state, in conjunction with aircraft system framework and superfluous
Remaining design point is allocated by flow chart, is a kind of method of salary distribution from bottom to top.It is more numerous the invention avoids drawing
Trivial fault tree judges the failure effect grade of airborne equipment with process figure layer, improves airborne equipment development and guarantees grade
Allocative efficiency.In addition, analysis input of the invention is the disabler state of airborne equipment, it is only necessary to comb out airborne set comprehensively
Standby all possible disabler, so that it may realize that the functional development of airborne equipment institute guarantees grade, avoid leakage item.
Detailed description of the invention
Fig. 1 is to develop to guarantee grade allocation flow schematic diagram
Specific embodiment
Below with reference to Fig. 1, the present invention is described further.It is only illustrated in Fig. 1 and is associated with disaster and dangerous mistake
Effect state, the distribution methods of other failure states guarantee basic principle that ranking score is matched the rest may be inferred according to developing.
Step 1: combing out it needs to be determined that developing the airborne equipment inventory for guaranteeing grade, and combing out airborne equipment need to
Distribute the function of developing and guarantee；
Step 2: will need to distribute the disabler developed and guarantee that the airborne equipment functional fault of grade is associated with aircraft
On, specifying the airborne equipment functional fault will lead to the failure states such as disaster, dangerous or great；
Step 3: guaranteeing grade allocation flow in conjunction with developing according to the failure state that airborne equipment functional fault is associated with
Figure, follows the steps below distribution:
1. whether airborne equipment functional fault has been associated with the failure state of aircraft disaster, if selection is, according to step
2-5, which develop, guarantees that ranking score is matched, if selection is no, directly execution step 6-14, which develop, guarantees that ranking score is matched；
Does the function of the failure have independent Redundancy Design 2. in the design scheme of aircraft system? if selection is no,
Then functions of the equipments development guarantees that grade is assigned as A, if selection is, enters and judges in next step；
3. is the quantity of redundancy extra or equal to 2 in Redundancy Design? if selection is, functions of the equipments, which are developed, is protected
Card grade is assigned as C, if selecting no (i.e. functions of the equipments only have a redundancy), enters and judges in next step；
4. there is the difference of primary function and standby functions in only one Redundancy Design? if selection is no, set
Standby function development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
5. the functions of the equipments are primary functions? if selection is that functions of the equipments development guarantees that grade is assigned as A, such as
Fruit selection is no, then functions of the equipments development guarantees that grade is assigned as C.
6. whether airborne equipment functional fault has been associated with the failure state of aircraft danger, if selection is, according to step
7-10, which develop, guarantees that ranking score is matched, if selection is no, directly execution step 11-14, which develop, guarantees that ranking score is matched；
Does the function of the failure have independent Redundancy Design 7. in the design scheme of aircraft system? if selection is no,
Then functions of the equipments development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
8. is the quantity of redundancy extra or equal to 2 in Redundancy Design? if selection is, functions of the equipments, which are developed, is protected
Card grade is assigned as D, if selecting no (i.e. functions of the equipments only have a redundancy), enters and judges in next step；
9. there is the difference of primary function and standby functions in only one Redundancy Design? if selection is no, set
Standby function development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
10. the functions of the equipments are primary functions? if selection is that functions of the equipments development guarantees that grade is assigned as B, such as
Fruit selection is no, then functions of the equipments development guarantees that grade is assigned as D.
Does the function of the failure have independent Redundancy Design 11. in the design scheme of aircraft system? if selection
No, then functions of the equipments development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
12. is the quantity of redundancy extra or equal to 2 in Redundancy Design? if selection is, functions of the equipments, which are developed, is protected
Card grade is assigned as E, if selecting no (i.e. functions of the equipments only have a redundancy), enters and judges in next step；
13. there is the difference of primary function and standby functions in only one Redundancy Design? if selection is no, set
Standby function development guarantees that grade is assigned as D, if selection is, enters and judges in next step；
14. the functions of the equipments are primary functions? if selection is that functions of the equipments development guarantees that grade is assigned as C, such as
Fruit selection is no, then functions of the equipments development guarantees that grade is assigned as E.
Step 4: guaranteeing grade according to the development that allocation result combs out each function of airborne equipment, functions of the equipments are formed
It develops and guarantees that ranking score matches inventory.
The present invention breach it is conventional take fault tree it is top-down develop guarantee the traditional method that ranking score is matched, lead to
It crosses flow chart and develop and guarantee that ranking score is matched.Directly by the influence of the disabler of equipment and aircraft top-level functionality failure state
Grade is associated, and top layer caused by being failed by specific functions of the equipments influences to judge step by step, is a kind of distribution from bottom to top
Mode.It avoids and draws relatively complicated fault tree, it is only necessary to analyze the aircraft top layer that the disabler of airborne equipment will lead to
Disabler judges the failure effect grade of airborne equipment with flow chart, is able to ascend point that airborne equipment development guarantees grade
With efficiency；The analysis input of this method is the disabler state of airborne equipment, and it is all can more to comb out airborne equipment comprehensively
Possible disabler avoids leakage item.
Claims (7)
1. a kind of airborne equipment development guarantees grade distribution method, which is characterized in that guarantee grade allocation process diagram based on developing,
It is associated by airborne equipment functional fault to aircraft disabler；Determine that developing guarantee the airborne of grade sets clearly requiring
After standby functional fault, judge that the specific failure state of aircraft that the functional fault can be associated with is associated with corresponding failure state
Afterwards, it is allocated according to the basic distribution principle proposed in SAE ARP4754A " civil aircraft and system development guide ".
2. airborne equipment development as described in claim 1 guarantees grade distribution method, which is characterized in that specific step is as follows:
Step 1: combing out it needs to be determined that developing the airborne equipment inventory for guaranteeing grade, and comb out airborne equipment and need to divide
With the function of developing guarantee；
Guarantee that the airborne equipment functional fault of grade is associated in the disabler of aircraft step 2: will need to distribute to develop, it is bright
True airborne equipment functional fault will lead to the failure states such as disaster, dangerous or great；
Step 3: guaranteeing grade allocation process diagram according to the failure state that airborne equipment functional fault is associated in conjunction with developing, pressing
It is allocated according to following steps:
1) whether airborne equipment functional fault has been associated with the failure state of aircraft disaster, if selection be, according to step 2-5 into
Row, which is developed, guarantees that ranking score is matched, if selection is no, directly execution step 6-14, which develop, guarantees that ranking score is matched；
2) judge in the design scheme of aircraft system, whether the function of the failure has independent Redundancy Design, if selection is no,
Then functions of the equipments development guarantees that grade is assigned as A, if selection is, enters and judges in next step；
3) judge in Redundancy Design, whether the quantity of redundancy is more than or equal to 2, if selection is functions of the equipments development
Guarantee that grade is assigned as C, if functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
4) judge in only one Redundancy Design there is whether primary function and standby functions have any different, if selection is no,
Functions of the equipments development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
5) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that grade is assigned as A,
If selection is no, functions of the equipments development guarantees that grade is assigned as C；
6) judge whether airborne equipment functional fault has been associated with the failure state of aircraft danger, if selection is, according to step
7-10, which develop, guarantees that ranking score is matched, if selection is no, directly execution step 11-14, which develop, guarantees that ranking score is matched；
7) judge in the design scheme of aircraft system, whether the function of the failure has independent Redundancy Design, if selection is no,
Then functions of the equipments development guarantees that grade is assigned as B, if selection is, enters and judges in next step；
8) judge in Redundancy Design, judge whether the quantity of redundancy is more than or equal to 2, if selection is functions of the equipments
Development guarantees that grade is assigned as D, if functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
9) judge the difference for whether having primary function and standby functions in only one Redundancy Design, if selection is no,
Functions of the equipments development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
10) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that grade is assigned as B,
If selection is no, functions of the equipments development guarantees that grade is assigned as D；
11) judge in the design scheme of aircraft system, whether which has independent Redundancy Design, if selection is no,
Then functions of the equipments development guarantees that grade is assigned as C, if selection is, enters and judges in next step；
12) judge in Redundancy Design, whether the quantity of redundancy is more than or equal to 2, if selection is functions of the equipments development
Guarantee that grade is assigned as E, if i.e. functions of the equipments only have a redundancy, select it is no, and enter in next step judge；
13) judge the difference for whether having primary function and standby functions in only one Redundancy Design, if selection is no,
Functions of the equipments development guarantees that grade is assigned as D, if selection is, enters and judges in next step；
14) judge the functions of the equipments whether based on function, if selection is that functions of the equipments development guarantees that grade is assigned as C,
If selection is no, functions of the equipments development guarantees that grade is assigned as E；
Step 4: guaranteeing grade according to the development that allocation result combs out each function of airborne equipment, functions of the equipments development is formed
Guarantee that ranking score matches inventory.
3. airborne equipment development as claimed in claim 2 guarantees grade distribution method, which is characterized in that the functions of the equipments
It develops and guarantees that grade A, B, C, D, E are defined by SAE ARP4754A " civil aircraft and system development guide ".
4. airborne equipment development as claimed in claim 2 guarantees grade distribution method, which is characterized in that the function of the aircraft
Failure includes the failure state of disaster, dangerous failure state.
5. airborne equipment development as claimed in claim 2 guarantees grade distribution method, which is characterized in that lose the function of equipment
Effect is associated with the failure of aircraft top-level functionality, and by the choice to functional redundancy and device backup situation, gradually judgement is obtained
The development of airborne equipment function guarantees grade.
6. airborne equipment development as claimed in claim 2 guarantees grade distribution method, which is characterized in that the method is a kind of
The method of salary distribution from bottom to top.
7. airborne equipment development as claimed in claim 2 guarantees grade distribution method, which is characterized in that the method is suitable for
The grade of precarious position caused by aircraft disabler determines.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111639871A (en) * | 2020-06-04 | 2020-09-08 | 中国航空综合技术研究所 | Civil aircraft reliability test assessment method |
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