Exactly So what is railway systems engineering?

Transcription

1 Exactly So what is railway systems engineering? Bruce Elliott University of Birmingham 19th April 2007 (For a copy of this presentation, see

2 Are the following railway SE activities? (for introducing a new underground train, say) 1. Managing requirements 2. Train architecture 3. Interface Control Documents 4. Defining V&V methods 5. Operational readiness review 6. Design reviews 7. Dynamic modelling 8. Config mgt / Change control 9. Managing assumptions 10. RAMS 11. Ergonomics 12. EMC 13. Modelling the design process 14. Scheduling activities

3 Definitions of SE a discipline that concentrates on the design and application of the whole (system) as distinct from the parts [INCOSE] an iterative process of top-down synthesis, development, and operation of a real-world system that satisfies, in a near optimal manner, the full range of requirements for the system [INCOSE] an inter-disciplinary approach and means to enable the realization of successful systems [731.1] interdisciplinary tasks, which are required throughout a system s lifecycle to transform customer needs, requirements and constraints into a system solution [IEEE 1220]

4 A definition of civil engineering "a great art, on which the wealth and wellbeing of the whole of society depends. Its essential feature, as distinct from science and the arts, is the exercise of imagination to fashion the products, processes and people needed to create a sustainable physical and natural built environment. It requires a broad understanding of scientific principles, knowledge of materials and the art of analysis and synthesis. It also requires research, team working, leadership and business skills. [ICE web-site]

5 Civil Eng Military Eng

6 Civil Eng

7 Mech Eng Civil Eng QS PM Arch

8 Mech Eng Elec Eng Civil Eng SW Eng QS PM Arch HF

9 Mech Eng Elec Eng Civil Eng Sys Eng SW Eng QS PM Arch HF

10 Core and fringe Sys Eng

11 Basis of study Looking at project-relevant provisions from: Systems Engineering Handbook, International Council on SE Version 3 Systems Engineering Capability Model, EIA / IS Now part of CMMI IEEE Standard for Application and management of the SE Process, IEEE Processes for Engineering a System, ANSI / EIA SE System life cycle processes, ISO / IEC 15288:2002 The System Engineering process applied to projects, LU, , Issue A1 Space engineering: System engineering Part 1: Requirements and process, ECSS-E-10 Part 1B Comparison of treatment of other systems disciplines Comparison of treatment of systems lifecycles Comparison of treatment of cross-lifecycle activities

12 Comparison of treatment of other systems disciplines

13 A benchmark systems lifecycle Concept and Feasibility Reqs Definition Design Implement n Install n and Handover Ops and Maint Decomm. and Disposal

14 Comparison of treatment of systems lifecycles 1

15 Comparison of treatment of systems lifecycles 2

16 Incidentally 60% 50% 40% 30% 20% INCOSE ECSS-E-10A Average 10% 0% Concept and Feasibility Requirements Definition Design Implementation Installation and Handover Operations and Maintenance Decommissioning and Disposal

17 Comparison of treatment of cross-lifecycle activities

18 What we agree on SE is an interdisciplinary activity concerned with ensuring that systems meet the needs for them. SE is active in all the phases of the system lifecycle up until delivery SE activities include a core of activities comprising activities related to all the phases of the system lifecycle up until delivery and cross-lifecycle activities concerned with: Maintaining and organising records Configuration management Defining processes Planning SE

19 What we don t agree on The best way to organise the SE activities in the early part of the system lifecycle into phases. Whether SE continues into the lifecycle phases concerned with transition to service, operations and maintenance and decommissioning and disposal. Whether SE includes a fringe of activities including the following system-related activities: Safety engineering Human factors / ergonomics RAM analysis and cross-lifecycle activities concerned with: Managing assumptions, dependencies and caveats Monitoring SE Technical co-ordination Supply chain co-ordination

20 Sources of unreliability Judgement involved in mapping lifecycle phases selecting project-related provisions associating project-related provisions with lifecycle phases and cross-lifecycle principles all involve a degree of judgement Inference from the fact that an SE document treats a topic to the conclusion that the writers regard the topic as part of SE is not completely reliable. And in fact neither is the reverse inference

21 Core and fringe Core = Lifecycle activities + Systems analysis Maintaining and organising records Defining processes, tools and technology Configuration management Planning SE Fringe Safety engineering Human factors / ergonomics RAM analysis Managing assumptions, dependencies and caveats Monitoring SE Technical coordination Supply chain coordination

22 Are the following railway SE activities? (for introducing a new underground train, say) 1. Managing requirements 2. Train architecture 3. Interface Control Documents 4. Defining V&V methods 5. Operational readiness review 6. Design reviews 7. Dynamic modelling 8. Config mgt / Change control 9. Managing assumptions 10. RAMS 11. Ergonomics 12. EMC 13. Modelling the design process 14. Scheduling activities

23 Recommendations Take a whole lifecycle view Acknowledge the fringe Be flexible in negotiating boundaries But try and keep the core Check that someone is doing each core and fringe activity Ensure liaison with any ceded activities

24 Thank you Bruce Elliott +44 (0)