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Application module:
System breakdown |
ISO/TS 10303-1214:2004(E)
© ISO
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This clause specifies the information requirements for the
System breakdown
application module. The information requirements are specified as the
Application Reference Model (ARM) of this application module.
NOTE 1 A graphical representation of the information
requirements is given in
Annex C.
NOTE 2 The mapping specification is specified in
5.1. It shows how
the information requirements are met by using common resources and
constructs defined or imported in the MIM schema of this application
module.
The following EXPRESS specification begins the
System_breakdown_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA System_breakdown_arm;
(*
The following EXPRESS interface statement specifies the elements
imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Product_breakdown_arm;
--
ISO/TS 10303-1248
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| Product_breakdown_arm |
ISO/TS 10303-1248 |
NOTE 2
See Annex C,
Figures
C.1and C.2
for a graphical representation of this schema.
This subclause specifies the ARM entities for this
module. Each ARM application entity is an atomic element that
embodies a unique application concept and contains attributes
specifying the data elements of the entity. The ARM
entities and definitions are specified below.
A System_breakdown is a type of
Breakdown
that identifies a partitioning of a system into a set of related
elements so as to form explicit, assembly - component views that comprise the
system elements.
The assembly-component view is represented by
System_element_usage
instances relating the system elements in the breakdown which are represented by
System_elements.
EXAMPLE
A system breakdown provides a decomposition of an aircraft in terms of high-level mechanisms such as
fuel system or flight control system - which might, in the second example, further decompose into low-level systems
such as autopilot system and instrument landing system.
EXPRESS specification:
*)
ENTITY System_breakdown
SUBTYPE OF (Breakdown);
END_ENTITY;
(*
A System_breakdown_context is a type of
Breakdown_context
that is a membership relationship between a
System_element
and a
System_breakdown of which the system element is a member.
EXAMPLE
A heating system is a member of the breakdown of a climate control system.
EXPRESS specification:
*)
ENTITY System_breakdown_context
SUBTYPE OF (Breakdown_context);
SELF\Breakdown_context.breakdown : System_breakdown_version;
SELF\Breakdown_context.breakdown_element : System_element_definition;
END_ENTITY;
(*
Attribute definitions:
breakdown:
the version of the
System_breakdown
of which the
System_element
is a member.
breakdown_element:
the view of the version of the
System_element
that is a member of the
System_breakdown.
A
System_breakdown_version
is a type of
Breakdown_version
that identifies a version of a
System_breakdown
.
EXAMPLE
A logistics engineer modifies the current systems breakdown for an aircraft and associated support equipment on the basis
of results from a
level of repair analysis.
EXPRESS specification:
*)
ENTITY System_breakdown_version
SUBTYPE OF (Breakdown_version);
SELF\Breakdown_version.of_product : System_breakdown;
END_ENTITY;
(*
Attribute definitions:
of_product:
the System_breakdown of which the System_breakdown_version is a version.
A
System_element
is a type of
Breakdown_element
that identifies the elements in one or more
System_breakdown
objects.
EXPRESS specification:
*)
ENTITY System_element
SUBTYPE OF (Breakdown_element);
END_ENTITY;
(*
A
System_element_definition
is a type of
Breakdown_element_definition
that identifies a view of a version
(System_element_version)
of a
System_element.
EXAMPLE
The collision avoidance system element of a system breakdown is subject to a level of repair analysis to support implementation
of optimized maintenance for an aircraft.
EXPRESS specification:
*)
ENTITY System_element_definition
SUBTYPE OF (Breakdown_element_definition);
SELF\Breakdown_element_definition.defined_version : System_element_version;
END_ENTITY;
(*
Attribute definitions:
defined_version:
the System_element_definition shall only be a view of a
System_element.
A
System_element_usage
is a type of
Breakdown_element_usage
that is a relationship between a
System_element_definition
and another
System_element_definition
that is a constituent.
EXAMPLE
In a system breakdown, the fuel system might include a fuel storage system and a fuel injection system as components.
EXPRESS specification:
*)
ENTITY System_element_usage
SUBTYPE OF (Breakdown_element_usage);
SELF\Breakdown_element_usage.parent_element : System_element_definition;
SELF\Breakdown_element_usage.child_element : System_element_definition;
END_ENTITY;
(*
Attribute definitions:
parent_element:
the emergent system breakdown element.
child_element:
the constituent system breakdown element.
A
System_element_version
is a type of
Breakdown_element_version
that identifies a version of a
System_element
.
EXAMPLE
A sound engineer changes the details describing the public address system that is an element in a system breakdown of an
aircraft.
EXPRESS specification:
*)
ENTITY System_element_version
SUBTYPE OF (Breakdown_element_version);
SELF\Breakdown_element_version.of_product : System_element;
END_ENTITY;
(*
Attribute definitions:
of_product:
the System_element_version shall only be a version of a
System_element
.
*)
END_SCHEMA; -- System_breakdown_arm
(*
© ISO 2004 — All rights reserved
