System Life Cycle Flashcards
is a view of a system or proposed system that addresses all phases of its existence
The System Life Cycle in Systems Engineering
The System Life Cycle in Systems Engineering is a view of a system or proposed system that addresses all phases of its existence to include (8):
System conception
Design and development
production and/or construction
Distribution
Operation
Maintenance and support
Retirement
Phase-out and disposal
the stage where an identified need is examined, requirements for potential solutions are defined, potential solutions are evaluated
system specification is developed.
conceptual design stage
The conceptual design stage is the stage where: (4)
identified need is examined
requirements for potential solutions are defined
potential solutions are evaluated
system specification is developed.
the technical requirements that will provide overall guidance for system design.
System Specification
System Specification refers to the ___ that will provide overall guidance for ___.
technical requirements, system design
Because this document determines __, the stage cannot be completed until a__ has determined that the system specification properly addresses the __.
-all future development
- conceptual design review
-motivating need
Key Steps within the Conceptual Design Stage
a Need Identification
b Feasibility Analysis
c System Requirements Analysis
d. System Specification
e Conceptual Design Review
the process of discovering a customer’s requirements, constraints, pain points, and motivations.
Need Identification
Need Identification
– the process of discovering a customer’s __,__,__, and __.
requirements, constraints, pain points, and motivations
?
– It is a __that is used to understand __ to the customer.
Need Identification
-basic personal selling technique
-how your products will be of value
is used to determine the viability of an idea, such as ensuring a project is legally and technically feasible as well as economically justifiable.
Feasibility Analysis
?
– is used to determine the __, such as ensuring a project is __ as well as __.
Feasibility Analysis
-viability of an idea
-legally and technically feasible
-economically justifiable
It tells us whether a project is worth the investment—in some cases, a project may not be doable.
Feasibility Analysis
is a statement that identifies the functionality that is needed by a system in order to satisfy the customer’s requirements.
System Requirements Analysis
?
– is a statement that identifies the __that is needed by a system in order to __.
System Requirements Analysis
-functionality
-satisfy the customer’s requirements
are a broad and also narrow subject that could be implemented to many items.
System requirements
__ means those technical and functional requirements relating to the design and performance of the BAS (building automation system) System or a particular Phase of the BAS System, as set forth in the Contract.
System Specifications
? means those __ relating to the design and performance of the __ or a __, as set forth in the__.
System Specifications
-technical and functional requirements
-BAS (building automation system) System
-particular Phase of the BAS System
- Contract
is meant to provide an informal critique and evaluation of a project’s basic design approach.
Conceptual Design Review
?
– is meant to provide an __ and __ of a __
Conceptual Design Review
-informal critique and evaluation
-project’s basic design approach.
During this stage of the system lifecycle, subsystems that perform the desired system functions are designed and specified in compliance with the system specification.
Preliminary System Design
?
– During this stage of the system lifecycle, __that perform the__ are designed and specified in compliance with the __.
-Preliminary System Design
-subsystems
-desired system functions
-system specification
?
– __ between subsystems are defined, as well as __ and __.
Preliminary System Design
-Interfaces
-overall test and evaluation requirements
?
– At the completion of this stage, a __ is produced that is sufficient to perform __and __.
-Preliminary System Design
-development specification
-detailed design and development
Key Steps within the Preliminary Design Stage: (7)
Functional analysis
Requirements allocation
Detailed trade-off studies
Synthesis of system options
Preliminary design of engineering models
Development specification
Preliminary design review
?
– This stage includes the __ of __ that brings __into a __.
-Detail Design and Development
-development of detailed designs
-initial design work
-completed form of specifications
?
– This work includes the__ between the __ and __ and a __ of the system’s __, __, and __.
-Detail Design and Development
-specification of interfaces
-system and its intended environment
-comprehensive evaluation
-logistical, maintenance and support requirements
Key Steps within the Detail Design and Development Stage: (6)
Detailed design
Detailed synthesis
Development of engineering and prototype models
Revision of development specification
Product, process and material specification
Critical design review
During the __ the product is built or assembled in accordance with the __ and is __
-production and/or construction stage
-requirements specified in the product, process, and material specifications
-deployed and tested within the operational target environment.
__ are conducted in order to__ and __for __.
-System assessments
-correct deficiencies
-adapt the system
-continued improvement
Key Steps within the Product Construction Stage: (5)
Production and/or construction of system components
Acceptance testing
System distribution and operation
Operational testing and evaluation
System assessment
-__
Once fully deployed, the system is __and __.
-Utilization and Support
-used for its intended operational role
-maintained within its operational environment.
Key Steps within the Utilization and Support Stage:
(4)
System operation in the user environment
Change management
System modifications for improvement
System assessment
?
– __ and __ of the system must be continuously evaluated to determine when the product has met its __.
Phase-out and Disposal
-effectiveness and efficiency
-maximum effective lifecycle
Phase-out and Disposal
– Considerations include:
(4)
-Continued existence of operational need
-matching between operational requirements and system performance
-feasibilityof system phase-out versus maintenance
-availability ofalternative systems.
