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ARCH.081 Update constraints on system solution

SM-2821 - Populate Confluence page for activity definition: ARCH.081 Collect all constraints in one set Finished

GoalEnable the informed tradeoff of system needs against implementation constraints
Requirements met by this process step

EN 50126-1 7.5.2
ISO 15288 6.4.8.3 a) 5, 6.4.11.3 a) 5, 6.4.10.3 a) 4

Inputs

AMOD-010 Trade space assessment

AMOD-012 System lifecycle model

Reference specification V&V strategy (from Ref-IVV)

Outputs

AMOD-116 System implementation constraints

Potential updates to:

AMOD-050 Stakeholder non-functional requirements

AMOD-056 System functions and exchanges (single system capability)

AMOD-058 Initial system exchange scenario

AMOD-059 Initial system functional chain description

AMOD-114 System interface definition

AMOD-117 System exchange scenarios with risk control measures [S.ES]

AMOD-118 System functional chain descriptions with risk control measures [SFCD]

Methodology

For each specified input (and any other input that may be relevant):

  • assess each constraint in the contents;
  • identify if the constraint has a material effect on the implementation or solution space of the system;
    • if the constraint has no effect, note the rationale for the decision, and discard the constraint;
  • identify the best way to represent the constraint at system level (e.g. as a non-functional aspect, a new function, a limit or constraint on an existing function etc.);
  • model the constraint.
Tools and non-human resourcesTeam for Capella
CardinalityOnce per package of system capabilities
Completion criteriaAll the constraints and concerns in the input materials have been either converted to system-relevant constraints in the model, or discarded as irrelevant, with justification.
Design reviewARCH.R.4 System review - consolidated
Step done by (Responsible)Lead system architect
Provides input to/assists (Contributes)
  • Operational concepts architect
  • System architect
  • Engineer
Uses outputs (Informed)None directly