SynergyofSystemsEngineeringandModelingandSimulation

1、Synergy of Systems Engineering and Modeling and SimulationInternational Conference on Modeling and Simulation: Methodology, Tools, Software ApplicationsCalgary, Canada, July 31 - August 2 , 2006Tuncer ren M&SNet: Ottawa Center of the McLeodInstitute of Simulation SciencesUniversity of Ottawa, Ottawa

2、, ON, CanadaLevent YilmazM&SNet: Auburn M&S LaboratoryComputer Science & Software EngineeringAuburn University, Auburn, AL 36849 11. AimEndorse and promote systems engineering in serious (large and complex) M&S studies 2Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Wh

3、y systems?4. Systems Engineering Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions3Some personal biases of the first author: Masters in mechanical engineeringHence strong belief in the value of tools and integrated tools;And in the informa

4、tion age, the value of soft tools.4Some personal biases: At the beginning of my career I worked, for 5 years, as an IBM systems engineerHence I appreciate the value of problem formulation in solution generation.(Please note that in most high schools and universities in science education for example,

5、 the emphasis is not on problem formulation; problems are always well formulated & there are even no noises in problem specifications; classical education does not foster problem specification skills.) 5Some personal biases of the first author: Ph.D. (1971) in Systems Engineering (Univ. of Arizona)

6、Thesis: “GEST: General Systems Theory implemetor” (the first system theory-based simulation model specification language)6An analogy:If we want to build a small cottage, a craftsman can do a very good job; having structural engineers may be unnecessary.In M&S there was a time when for small projects

7、 art and craftsmanship was the norm.However, the craftsmanship techniques do not scale up to build a skyscraper.Google gives 14 million+ hits, when searched with “failures of simulation projects!”7Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Why systems?4. Systems En

8、gineering Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions8Why systems?In serious simulations, (1) The simuland has to be represented (modeled): - System theories provide solid background to represent & process (complex) systems of intere

9、st (or systems under investigation). (remember the term “systems of systems” used especially in military applications); andSimulation tools and/environments are also often (complex) systems.9Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Why systems?4. Systems Engineer

10、ing Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions10Customer needsRe-evaluateRe-evaluateRe-evaluateRe-evaluateRe-evaluateState the problemModel the systemAssess performanceLaunch the systemIntegrateInvestigate alternativesOutputsRe-eval

11、uateSystems Engineering Process(adopted from INCOSE*-fellows; originally from Bahill and Gissing 1998)S - State the problemI - Investigate alternativesM - Model the systemI - IntegrateL - Launch the systemA - Assess performanceR - Re-evaluate* International Council on Systems Engineering11Please not

12、e that there is also a “V” model of systems engineering.12Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Why systems?4. Systems Engineering Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions13 M&S provides ide

13、al laboratory facilities for SE studies to perform experiments with system models. (Smith 1962) The use of M&S in SE is well established. The mission of the M&S Committee of NDIAs Systems Engineering Division is for example: “Advance the understanding and use of modeling and simulation in the practi

14、ce of systems engineering for DOD programs.” (Hollenbach 2003, NDIA-M&S Com) Connors et al. refer to simulation-based systems engineering to life-cycle management of defense systems. (Connors et al. 2002) Stuckey (2005) reports inherent value of M&S in systems engineering and test in defense applica

15、tions.14Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Why systems?4. Systems Engineering Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions15 One of the three recommendations made by Hollenbach to overcome so

16、me shortcomings of M&S in important applications is to “Adopt Disciplined M&S Planning (Left Side of Systems Engineering “V” for M&S)” (Hollenbach 2003).(valuable details in the reference) Bartolomei (2001) develops a framework for the use of SE in M&S within a military acquisition program.16Some re

17、ferences (from the M&S Body of Knowledge site maintained by Dr. ren)Groups MITRE (2001): Distributed Simulation Systems Engineering: How to Play War NDIA-M&S Committee: Modelling and Simulation Committee of the Systems Engineering Division of NDIA (National Defence Industrial Association) NDIA Syste

18、ms Engineering Division - M&S Committee: Mission, Background and Objectives. by Hollenbach, Jim. (2003). NIA: National Institute of Aerospace - Center for Aerospace Systems Engineering, Modeling and Simulation. UAH-RSESC: The University of Alabama in Huntsville, Rotorcraft Systems Engineering and Si

19、mulation Center.17Bartolomei, J. (2001). The Use of Systems Engineering Processes and Tools to Develop a System Dynamic Simulation Model of Engineering Support During the Development Phase of an Acquisition Program. Masters Thesis. Brasse, M., Kok, A.J.F., Budde, E.-W. (2001). Systems Engineering an

20、d Integration Aspects of a Multi-National HLA Federation Development. Connors, S., Gauldin, J., Smith, M. (2002). Closed-Loop, Simulation-Based, Systems Engineering Approach to Life-Cycle Management of Defense Systems. Proc. WSC. 2005 Stuckey, Richard M. (2005) US Department of Defense Systems Engin

21、eering & Test -Progress Toward Revitalization -18Plan 1.Aims2.Some motivations- personal bias of the first author; an analogy3.Why systems?4. Systems Engineering Process5. Synergy of SE and M&S5.1 M&S for Systems Engineering 5.2 SE for M&S and some references6.Conclusions19As a result of the advancements, M&S is applied to more and more