IDEF3 Process Description Capture Method

Transcription

1 IDEF3 Process Descripion Capure Mehod

2 IDEF3 is par of he IDEF family of mehods developmen funded by he US Air Force o provide modelling suppor for sysems engineering and enerprise inegraion 2

3 IDEF3 Mehod The IDEF3 Process Descripion Capure Mehod provides a mechanism for collecing and documening processes IDEF3 capures precedence and causaliy relaions beween siuaions and evens in a form naural o domain expers by providing a srucured mehod for expressing knowledge abou how a sysem, process, or organizaion works Слайд 3. Замятина О.М. 3

4 IDEF3 descripions can Record he raw daa resuling from fac-finding inerviews in sysems analysis aciviies Deermine he impac of an organizaion's informaion resource on he major operaion scenarios of an enerprise Documen he decision procedures affecing he saes and life-cycle of criical shared daa, paricularly manufacuring, engineering, and mainenance produc definiion daa Manage daa configuraion and change conrol policy definiion. Make sysem design and design rade-off analysis Provide simulaion model generaion 4

5 IDEF3 capures he behavioral aspecs of an exising or proposed sysem Capured process knowledge is srucured wihin he conex of a scenario, making IDEF3 an inuiive knowledge acquisiion device for describing a sysem Unlike simulaion languages (e.g., SIMAN, SLAM, GPSS, WITNESS) ha build predicive mahemaical models, IDEF3 builds srucured descripions These descripions capure informaion abou wha a sysem acually does or will do and also provide for he organizaion and expression of differen user views of he sysem 5

6 There are wo IDEF3 descripion modes IDEF3-models Process Diagram Flow Descripion Objec Sae Transiion Nework Слайд 6. Замятина О.М. 6

7 There are wo IDEF3 descripion modes A process flow descripion capures knowledge of "how hings work" in an organizaion, e.g., he descripion of wha happens o a par as i flows hrough a sequence of manufacuring processes The objec sae ransiion nework descripion summarizes he allowable ransiions an objec may undergo hroughou a paricular process 7

8 Figure 1: IDEF3 Process Descripion Diagram 8

9 Figure 2: IDEF3 Objec Sae Transiion Nework Diagram 9

10 Main componens of IDEF3 Process Descripion Diagram Name Кто выполняет Uni of work Or Unis of Behavior (UOB) Unis of Behaviour (UOB) represen aciviies, acions, processes or operaions Слайд 10. Замятина О.М. 10

11 Main componens of IDEF3 Process Descripion Diagram Name Referens Referens are used o indicae conexsensiive informaion and may refer o any oher ype of UOB such as an elaboraion form Слайд 11. Замятина О.М. 11

12 Main componens of IDEF3 Process Descripion Diagram Links Connec UOB Connec referens UOW 1 UOW 2 A B Links describe acion ransfer in he model Слайд 12. Замятина О.М. 12

13 Main componens of IDEF3 Process Descripion Diagram Juncions Fan In Fan Ou Where he process flow diverges (fan-ou) or converges (fan-in) juncion boxes are used. Juncions are of he AND, OR or Exclusive OR ype and can be synchronous or asynchronous 13

14 Rule «single inpu single oupu» Name Name Incorrec! J1 Name Name Слайд 14. Замятина О.М. 14

15 Juncions cascade Incorrec!! You have o change o Juncions cascade Слайд 15. Замятина О.М. 15

16 There are 5 ypes of Juncions Обозначение & & O O X Name Asynchronous AND Synchronous AND Asynchronous OR Synchronous OR XOR (Exclusive OR) Слайд 16. Замятина О.М. 16

17 Asynchronous AND I2 I3 & & O2 O3 I2 I3 O2 O3 Number of response = 1 Слайд 17. Замятина О.М. 17

18 Synchronous AND I2 & & O2 I3 O3 I2 I3 O2 O3 Number of response = 1 Слайд 18. Замятина О.М. 18

19 Asynchronous OR I2 O O O2 I3 O3 I2 I3 O2 O3 Number of responses = 2 N - 1 Слайд 19. Замятина О.М. 19

20 Synchronous OR I2 I3 O O O2 O3 I2 I3 O2 O3 Number of responses = 2 N

21 XOR (Exclusive OR) I2 X X O2 I3 O3 I2 I3 O2 O3 Number of responses = N Слайд 21. Замятина О.М. 21

22 Examples of IDEF3-models 22

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25 Thank you for your aenion! 25