System Support Engineering Module 2.3 Element 002 System Analysis. Tutor: Dr John Stavenuiter Version: January 2015 [WS]

Transcription

1 System Support Engineering Module 2.3 Element 002 System Analysis Tutor: Dr John Stavenuiter Version: January 2015 [WS]

2 System Analysis Focus COST-EFFECTIVENESS SYSTEM EFFECTIVENESS COSTS SYSTEM ANALYSIS LOGISTICS SUPPORT ANALYSIS Overall System & Logistics Aspects SYSTEM TEST & EVALUATION Capability Aspects SYSTEM SUPPORT Availability & Reliability Aspects System Support Engineering (SSE) 2

3 What is System Analysis? LEGEND : hierarchical relation : functional relation OPERATIONAL OUTPUT ENLARGED SYSTEM ANALYSIS DOMAIN OPERATIONAL ASSET OPERATION/ MISSION PROFILE EFFECTIVE CAPITAL ASSET SYSTEM ANALYSIS DOMAIN EFFECTIVE PROVISIONS EFFECTIVE OPERATONS 3

4 System(s) Analysis explained The process of investigating a system, identifying problems, and using the information to recommend improvements to the system. 4 Source: Systems Analysis and Design

5 Development as start of the Life Cycle NEED EQUIPMENT DESIGN AND DEVELOPMENT PRODUCTION OF EQUIPMENT UTILIZATION AND MAINTENANCE PHASE OUT DESIGN OF PRODUCTION CAPABILITY PRODUCTION OPERATIONS DESIGN OF SUPPORT CAPABILITY SUSTAINING MAINTENANCE AND SUPPORT OFEQUIPMENT DESIGN OF DISPOSAL/RECYCLING CAPABILITY EQUIPMENT RETIREMENT (sustaining material disposal and recycling) FEEDBACK : PRODUCTS & SERVICES : INFORMATION & COMMUNICATION 5

6 Technical Evaluation Recap sheet from System Analysis Verification Validation Analysis of technical risks of system Trade-off of system design options Analysis of effectiveness in complying with system requirements ( Are we building the house right? ) Verify design solutions and end products against requirements Determine readiness of enabling products ( Are we building the right house? ) Validation of correctness and completeness of requirements 6

7 How to structure your System Analysis approach? Stakeholder Needs V-Model System Requirements System Design System Verification Results System Verification Plan Subsystem Requirements Subsystem Verification Plan Decomposition & Definition Subsystem Design Component Requirements Subsystem Verification Results Component Verification Plan Integration & Verification Component Design Time & Maturity Component Verification Results Based on: SE processes INCOSE INSIGHT Vol 5 Issue 1 V-model representation the SE Process of Product Development 7

8 V-Model in Early Stage of the Life Cycle Is the proposed design acceptable to stakeholders? System Requirements System Design How will we prove that the solution has been built right? System Verification Plan How are the risks of the design being resolved? 8

9 V-Model in Late Stage of the Life Cycle Stakeholder Needs Is the verified performance acceptable? System Requirements System Verification Plan System Design Has the solution been built right? System Verification Results Subsystem Requirements Subsystem Design Subsystem Verification Results Subsystem Verification Plan Component Requirements Component Design Component Verification Results Component Verification Plan Is the problem cause understood? 9

10 X-Model: An expanded V-model of SE SPECIFY VERIFY Level of Specification Detail System Spec Subsystem Spec. Component Spec. Verification & Validation Audits Component Test & Eval. Subsystem Test & Eval. System Test & Eval. Proven Functionality & Performance Requirements Traceability & Design Reviews Make, Buy, or Reuse Test Readiness & Quality Reviews Level of Design Detail DESIGN System Dwg. & ICDs Subsystem Dwg. & ICDs Component Part Lists Compliance & Configuration Reviews Time & Maturity 10 Component Realisation Subsystem Realisation System SW/HW Integration Based on: BOEING SE Proven Manufacturing & Producability BUILD

11 Use of the V-model SE Process Model SE process model: Gives a generic picture Indicates WHAT has to be done Cannot be applied directly in a practical way. Organisation decides: HOW it must be done procedures, methods, templates, checklists, etc. WHO has to do it function description, assignment of duties project team. 11

12 SE Process Models and Standards SE process model, V-model and X-model are some of many possible models of SE processes Similar models are basis for SE standard, e.g. EIA-632 standard (Electronic Industries Alliance) IEEE standard INCOSE SE handbook (International Council on SE) ISO/IEC standard ECSS-E-10A (European) Space Projects Standards are basis for SE Capability Maturity Models (CMMi) INCOSE Handbook is basis for Certification 12

13 System Analysis in the context of WFL 13

14 Scope of System Analysis System life cycle phase Design requirements Design and development Production or construction Operational use Sustaining support Disposal Functional capability» performance of the system Reliability Maintainability Usability Safety Supportability Serviceability Producibility Disposability Affordability» successful operation of the system throughout its mission» ease, accuracy, safety, and economy of maintenance actions» interfaces between human and hardware, software, facilities» risk and impact of mishaps involving operators and environment» supportable system; includes reliability, maintainability and usability in design» serviceable system; includes service equipment and personnel» ease and economy of producing the system» ease, economy and environmental impact of disassembly and disposal of the system» life cycle costs of the system, compared to budget constraints 14

15 How to get a grip on this all? Firstly define your; assets, systems, objects, installations, components and so on.. 15

16 System of Systems 16

17 Systems Thinking 17

18 What systems do you see? Daimler-Benz What is the scope of the system? What are the boundaries? 18

19 Classification of Systems [1/4] Natural systems made by Nature (plants, organisms) Human-made systems humans have intervened/ transformed something Human made impact Natural 19

20 Classification of Systems [2/4] Physical systems manifest themselves in physical way Conceptual systems made up by plans, symbols, hypotheses 20

21 Classification of Systems [3/4] Static systems A structure without activity, static for some time Dynamic systems A combination of structures which execute activities + 21

22 Classification of Systems [4/4] Closed systems no significant interaction with environment Open Systems information, Matter, Value or energy is exchanged with the environment of the system 22

23 Focus of System Analysis Human-made Physical (Dynamic) Open Systems 23

24 Ways to specify System Analysis Results 1. System Identification Diagram 24 [INCOSE]

25 2. Context Diagram Context Diagram principles: Define system boundaries Consider system as a black box Define environmental conditions Identify interactions with external systems and operators / users Operator/User Environment K Owner/Manager System of Interest External System X External System Y Service Provider/.. Environment L External System Z 25

26 The Virtual Wind Fish Farm as example Imaginary location 30 km from Port Ijmuiden of the Netherlands 26

27 Wind Fish Farm IDENTIFICATION DIAGRAM 27

28 Wind Fish Farm CONTEXT DIAGRAM Eg. as basis for Stakeholder analysis 28

29 Wind Fish Farm OUTLINE 29

30 The LCM-systems Analysis Method [AMC basebook, Appendix 4D, p. 307] 30

31 Analyzing the Asset Life Cycles N EE D Specify System Functionality Acquire System Functionality Achieve Cost Effectiveness Justify Phase-out 0 lifetime (logistic processes)dt [AMC basebook, Appendix 4D, p ] 31

32 The basic System Model as used for WFL SYSTEM FUNCTIONALITY SYSTEM XYZ OPERATIONAL (SUB) FUNCTIONS FUNCT.X FUNCT.Y FUNCT.Z TECHNICAL (SUB) FUNCTIONS FUNCT.Y1 FUNCT.Y2 INSTALLATIONS (functional packages) INST.A INST.B INST.C INST.D INST.E [AMC basebook] 32

33 Study Assignment To start, go to the SA-Quiz and set-up your Wind Farm Function Model! The assignment is: 1. Read the Install Instructions and download the AMICO system modeler tool 2. Read the AMICO User Manual and explore the AMICO application by given example 3. Compose a Function Diagram of a Wind Farm System 4. Save your.mod file and upload it by. At the SA-quiz page. You have finalized this element when your work is accepted. 33