SIAP SE TEM 00720.ppt-1 IEEE Standard for IEEE Standard for Application & Management of Application & Management of the the Systems Engineering Process Systems Engineering Process Robert L. Hobart Deputy Commander, C4I Integration (703) 784-0700 [email protected]23 Oct 2001
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SIAP SE TEM 00720.ppt-1 IEEE Standard for Application & Management of the Systems Engineering Process Robert L. Hobart Deputy Commander, C4I Integration.
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SIAP SE TEM 00720.ppt-1
IEEE Standard for Application & IEEE Standard for Application & Management of the Management of the
Systems Engineering ProcessSystems Engineering Process
IEEE Standard for Application & IEEE Standard for Application & Management of the Management of the
Systems Engineering ProcessSystems Engineering ProcessRobert L. Hobart
Defines the interdisciplinary tasks that are required throughout a system’s life cycle to transform customer needs, requirements, and constraints into a system solution.
Intent is to guide the development of systems or commercial, government, military, and space applications.
Specifies the requirements for the systems engineering process and its application throughout the product life cycle.
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
Describes an integrated approach to product development, which represents the total technical effort for– Understanding the environments and related conditions for
which product will be utilized/designed;
– Defining product requirements in terms of functional requirements, quality factors, usability, producibility, supportability, safety, and environmental impacts;
– Defining life cycle processes for manufacturing, test, distribution, support, training, and disposal
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
SIAP SE TEM 00720.ppt-5
Systems Engineering DefinedSystems Engineering DefinedSystems Engineering DefinedSystems Engineering Defined
Interdisciplinary approach encompassing the entire technical effort to evolve and verify an integrated and life-cycle balanced set of system people, product, and process solutions that satisfy customer needs.
Systems engineering encompasses:– Technical efforts related to the development, manufacturing,
verification, deployment, operations, support, disposal of, and user training for, system products and processes
– Definition and management of the system configuration
– Translation of the system definition into work breakdown structures
– Development of information for management decision making
EIA Interim Standard, Systems Engineering 1994
SIAP SE TEM 00720.ppt-6
Discipline and ControlDiscipline and ControlDiscipline and ControlDiscipline and Control
SystemDefinition
Production
Customer
Support
PreliminaryDesign
DetailedDesign
Fabrication,Assembly,
Integration, andTest (FAIT)
SystemDefinition
SYSTEMBASELINE
BUILD-TOBASELINE
ACRSDR
DESIGN-TOBASELINE
ReviseEng & Tech
Plans forDetailedDesign
UpdateSystemBaseline
IdentifyInterfaces
ResolveComponent
Risks
PrepareIntegrated
DataPackage
SRRPDR
TRRFCA
PAR/PCADDR
ACR = Alternative Concept ReviewSDR = System Definition ReviewSRR = Software Requirements ReviewPDR = Preliminary Design ReviewDDR = Detailed Design ReviewTRR = Test Readiness ReviewFCA = Functional Configuration AuditPAR = Production Approval ReviewPCA = Physical Configuration Audit
SoftwareRequirements
Definition Phase
TestPlanningPhase
SoftwareVerification& Validation
PlanningPhase
ReviseEng & Tech
Plans forFAIT
Production & Deployment,
CustomerSupport
CompleteSpecifications
UpdateSystem
andDesign-ToBaselines
CompletePreliminaryDrawings for Each
Subsystem
CompleteSpecifications
CompleteComponentDefinition
(HW & SW)
SIAP SE TEM 00720.ppt-7
Specification TreeSpecification TreeSpecification TreeSpecification Tree
Subsystemspecification
Subsystemspecification
Subsystemspecification
Subsystemspecification
Assemblyspecification
Assemblyspecification
Assemblyspecification
Componentspecification
Componentspecification
Componentspecification
Componentspecification
Productspecification
Operationalprocedures
Manpower,personnel, and trainingspecification
Operationalarchitecture
System
Systemsarchitecture
Subsystemspecification
Componentspecification
Human/SystemInterface Specification
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
SIAP SE TEM 00720.ppt-8
Systems Engineering ProcessSystems Engineering ProcessSystems Engineering ProcessSystems Engineering Process
RequirementsAnalysis
RequirementsVerification
FunctionalAnalysis
FunctionalVerification
Synthesis
Requirements tradestudies and
assessments
Functional tradestudies and
assessments
Design tradestudies and
assessments
PROCESSINPUTS
DesignVerification
Verified physical architecture
Physical architecture
Verified functional architecture
Functional architecture
Validated requirements baseline
Requirements baseline
Design solutionrequirements and
alternatives
Design solutiontrade-offs and
impacts
Decomposition/allocationtrade-offs and impacts
Decomposition and requirement allocation
alternatives
Requirementtrade-offs and
impacts
Requirementand constraint
conflicts
PROCESS OUTPUTS
System
Analysis
Control
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
Conduct Technical Reviews and audits for the purpose of assessing technical progress.
Design reviews should be conducted at the completion of each application of the SE process and accomplish the following:– Assess system requirements and allocations
– Assess design maturity
– Present risks associated with continued development
– Assess life cycle processes and infrastructure
– Identify resources required for continued development
– Determine whether to proceed
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
SIAP SE TEM 00720.ppt-17
Technical Review ProcessTechnical Review ProcessTechnical Review ProcessTechnical Review Process
AfterDuringBefore
Plan
• Identify participants
• Assign roles andtasks
• Establish guidelinesand procedures
• Establish and useentry criteria
• Establish exitcriteria based on theevent-drivenschedule
Conducted to ensure sufficient progress is being made toward completion of:– Item performance specifications– Draft Item Detail, Process, and Material specifications– Design data-defining major subsystems, equipment, software, and
other systems elements– Analyses, reports, “-ility” analyses, trade studies, logistics support
analysis data, and design documentation– TPM data and analysis – Engineering breadboards, laboratory models, test models,
mockups, prototypes used to support the design, and– Supplier data describing specific components
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
Conducted to confirm that:– Issues for components, assemblies, subsystems, products, and LC
processes and services are resolved– Test procedures were completed and accurate– System and products were confirmed ready for test– Tests were conducted IAW established procedures– An audit trail from design reviews is established with changes
substantiated, and all products meet specification requirements– Risk handling procedures are satisfactory for production– Evolutionary development requirements and plans have been refined– Planning is complete and procedures, resources, and other requisite
people, products, and processes are available to initiate production, etc.
IEEE Std 1220-1998, IEEE Standard for Application and Management of the Systems Engineering Process
Systems Engineering ProcessSystems Engineering ProcessSystems Engineering ProcessSystems Engineering Process
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS INPUT• Customer Needs/ Objectives/ Requirements . . Mission/ Operations . . Measures of Effectiveness . . Environments . . Constraints • Technology Base• Prior Output Data• Program Decision Requirements• Requirements From Tailored Standards and Specifications
SIAP SE TEM 00720.ppt-30
Acquisition Process Acquisition Process
Product Baseline. .
MS 0
Phase 0 Phase I Phase II Phase III
MS I MS II MS III
Functional Baseline
Allocated Baseline
Technical Management Plan (TMP) Update Update Update
ASR SRR SFR SSR PDR CDR TRR FCA PCA
ENGINEERING CHANGEREVIEWS
OperationalRequirement
Document(ORD)
OperationalRequirement
Document(ORD)
OperationalRequirement
Document(ORD)
SystemThreat
Assessment
SystemThreat
Assessment
SystemThreat
Assessment
MissionNeed
Statement
Concept System SubsystemsDeficiencyCorrection
Mods/ProductImprovements
System Performance Specification
Item Performance Specification
Item Detail Specification
Reassess Threat Reassess Threat Reassess Threat
Preplanned Product Improvement (P3I)
DraftGovernment
Approves
.Developmental
. Conceptual Performance Baseline
PROCESS INPUT• Customer Needs/ Objectives/ Requirements . . Mission/ Operations . . Measures of Effectiveness . . Environments . . Constraints • Technology Base• Prior Output Data• Program Decision Requirements• Requirements From Tailored Standards and Specifications
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Requirements Loop
Systems Analysis& Control
Design Loop
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Requirements Loop
Systems Analysis& Control
Design Loop
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Requirements Loop
Systems Analysis& Control
Design Loop
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Requirements Loop
Systems Analysis& Control
Design Loop
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Functional Analysis/Allocation• Decomposition is Lower-Level Functions• Allocate Performance & Other Limiting Requirements is Lower-Level Functions• Define/Refine Functional Interfaces (Internal/External)• Define/Refine/Integrate Functional Architecture
Requirements Loop
Systems Analysis& Control
Design Loop
Synthesis• Transform Architecture (Functional to Physical)• Define Alternative Product Concepts• Define/Refine Physical Interfaces (Internal/External)• Define Alternative Product & Process Solutions
PROCESS OUTPUT• Integrated Decision Data Base . . Decision Support Data . . System Functional Physical Architectures . . Specifications & Baseline• Baseline System Solution
Describes a system’s or item’s functional performance, interoperability, and interface requirements.
Includes:– System interface specification
– Product interface specifications
– System specification
– Product specifications
– Integrated database that captures the design, data, models, metrics, changes, design rationale, and other pertinent information on decisions or calculations made to system requirements
Describes a subsystem functional, performance, interoperability, and interface requirements that are allocated from those of the system or a higher level sub-system
Includes:– Assembly and component interface specifications
– Subsystem specifications
– Assembly specifications
– Integrated database that captures the design, data, models and tools used, metrics, changes, design rationale, and other pertinent information on decisions or clarification made to subsystem requirements
Describes all the necessary functional, performance, and physical requirements of the subsystem; the functional and physical requirements designated for production acceptance testing
Includes:– Component interface specifications– Component specifications– Integrated database that captures the design, data, models and tools used,
metrics, changes, design rationale, and other pertinent information on decisions or clarification made to component requirements
Product baseline may consist of the actual equipment and software
SIAP SE TEM 00720.ppt-34
OPERATIONALNEEDS AND
REQUIREMENTS
OPERATIONALNEEDS AND
REQUIREMENTS
FEEDBACK (to in
clude P
Ms a
nd Oper
ators)
REVIS
E OR R
EFOCUS AS R
EQUIRED
3. IDENTIFY ATTRIBUTESTO SUPPORT OBJECTIVES
3. IDENTIFY ATTRIBUTESTO SUPPORT OBJECTIVES
TOP LEVELPERFORMANCEREQUIREMENTS
2. DEFINESYSTEM
BOUNDARIES
2. DEFINESYSTEM
BOUNDARIES
DESIGN REFERENCE
MISSION
4. ESTABLISH FUNCTIONAL
BASELINE
4. ESTABLISH FUNCTIONAL
BASELINE
FUNCTIONALBASELINE
1. DEFINE ENVIRONMENT
1. DEFINE ENVIRONMENT
SYSTEM DESCRIPTIONINTERFACES
SYSTEM ANALYSIS
WARFIGHTER
CONCURRENCE
PM SELECTALTERNATIVE
Partially Concurrent Not SequentialIterative
5. CONDUCTSYSTEM
RQMTS. REVIEW
5. CONDUCTSYSTEM
RQMTS. REVIEW
Products of th
e Syste
ms Engineer
ing Process
Common ProcessCommon Process
WARFIGHTERCONCURRENCE
GEO-ECONOMICALTERNATIVES
AFFORDABILITYBOUNDARIES
ID KEY COST ATTRIBUTESAND RELATIONSHIPS
CONDUCT LCC ANDCAIV TRADE-OFFS
Updated: 5 August 1997
ORD ATTRIBUTES
SIAP SE TEM 00720.ppt-35
Discipline and ControlDiscipline and ControlDiscipline and ControlDiscipline and Control
SystemRqmts
DefinitionPhase
InterfaceDefinition
Phase
SoftwareRqmts
DefinitionPhase
SoftwareTop-Level
DesignPhase
SoftwareTest
PlanningPhase
DetailedSoftwareDesignPhase
Code DebugPhase
SoftwareIntegration
TestPhase
CSCITest
Phase
DeploymentPhase
A-SPEC
SRRSFR
MS I
B1,B2-SPECS
IRS
MS II
SSR
C, D, E-SPECSPCA/FCA
MS III
SoftwareTop-Level
DesignDocument
SoftwareTestPlan
PDR
C-SPEC(Prelim)
CDR
SoftwareDetailedDesign
Document SoftwareTest Procedures
TRR
ALLOCATEDBASELINE
PRODUCTBASELINE
FUNCTIONALBASELINE
SIAP SE TEM 00720.ppt-36
Production Review Production Review Production Review Production Review
Conducted to confirm that:– Issues for the components, assemblies, subsystems, products, and life-cycle
processes and services are resolved– Test procedures for components, assemblies, subsystems, and products were
completed and were accurate– The system and products were confirmed ready for test– Tests were conducted IAW established procedures– Audit trail is established with changes substantiated and all requirements met– Risk management procedures satisfactory for production– Evolutionary development requirements and plans have been defined/refined– Planning is complete and procedures, resources, and other requisite people,
products, and processes are available to initiate production, distribution, operations, support, training, disposal, and evolutionary development