ISO/PDTS 10303-1070 was prepared by Technical Committee ISO/TC 184, Industrial automation systems and integration, Subcommittee SC4, Industrial data.
This International Standard is organized as a series of parts, each published separately. The parts of ISO 10303 fall into one of the following series: description methods, integrated resources, application interpreted constructs, application modules, application protocols, abstract test suites, implementation methods, and conformance testing. The series are described in ISO 10303-1. A complete list of parts of ISO 10303 is available from the Internet:
http://www.nist.gov/sc4/editing/step/titles/.
Annexes A and B form an integral part of this part of ISO 10303. Annexes, C, D, E, aand F are for information only.
The meaning of an application objects used within engineering analysis can be made clear by specifying that it is a specialisation of a more generic basic concept. This application module defines a library of generic basic concepts.
The fundamental concepts are:
thing that exists in the world and that can be observed directly or indirectly
A physical individual has a lifetime with a clearly defined beginning and end.
EXAMPLE - A Boeing 747-400 with a particular tail number is a physical individual. The physical individual had a particular position in the production sequence, and will be scrapped one day.
A physical individual has an unlimited degree of detail, such as the details of its microscopic material structure, which can be observed if sufficient care is taken. Hence the information recorded about a physical individual is not all there is, but all that is of interest.
abtract concept that indicates the nature of one of more aspects of a thing
A class, set or specification can be a requirement, a design, or a generic dictionary concept. A class, set or specification does not have a clearly defined beginning or end.
EXAMPLE - The 'Boeing 747-400' is a class. This class will not have a clearly defined end. One day there will be no physical individuals that are members of the class, but information about the nature of the class may still be retained.
A class, set or specification has only a finite number of aspects of a physical individual as criteria for membership. From the criteria, it is possible to make deductions about the behaviour of a member of a class. However there are always aspects of a physical individual, such as the details of its microscopic material structure, that are not specified by any class membership.
This application module defines basic concepts that are used to make clear the meaning of engineering analysis application objects.
The following are within the scope of this application module:
physical individual and class;
EXAMPLE - A distinction is made between a physical individual Boeing 747-400 (with a particular tail number) and the class that is the Boeing 747-400.
membership of class;
EXAMPLE - The physical individual motor car with licence plate L206 VGK is a member of the class that is Vauxhall Cavalier Envoy.
set theory relationships between classes;
EXAMPLE - There is an intersection between:
- the class that is widget type XYZ_123; and
- the class that is parts that fail after less than 100000 hours.
1% of widgets of type XYZ_123 are members of the class of parts that fail. 99% are not members of the class of parts that fail.
mappings between classes;
EXAMPLE - There is a mapping between:
- the class that is widget type XYZ_123; and
- the class that is base plate type B_5.
Each individual widget of type XYZ_123 contains a base plate of type B_5. A base plate of type B_5, can be a part of a widget of type XYZ_123, but need not be.
physical space;
EXAMPLE - The points within the volume of 'widget type XYZ_123' are a continuous three dimensional physical space.
The states within the activity 'widget type XYZ_123 start up' are a continuous one dimensional physical space.
The points within the volume of 'widget type XYZ_123' for the states within the activity 'widget type XYZ_123 start up' are a continuous four dimensional physical space. The variation of temperature with respect to space and time during the start up of 'widget type XYZ_123' is defined with respect to this space.
fusion.
EXAMPLE - 'Widget type XYZ_123' can be regarded as either a single thing or as the set of points within its volume. The relationship between the single thing and the set of points is a fusion.
EXAMPLE - The batch of widgets of type XYZ_123 produced on 2000-02-28 can be regarded as either:
- a set of physical individuals, which has statistical properties such as mean diameter, variance or diameter; or
- a single physical individual, which has specific properties such as the total mass of the batch.
The relationship between the set of physical individuals in the production run, and the physical individual that is the batch as a whole, is a fusion.
The following are not within the scope of this application module:
detailed specialisations of the generic concepts.
NOTE - The concepts defined in this module as specialised in the other engineering analysis modules.
If you have a comment on this module, please send it to the support team