product_modeling
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product_modeling [2018/11/02 22:37] andries |
product_modeling [2018/11/02 22:44] andries [1. Real products and imaginary products (designs)] |
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| ====== 1. Real products and imaginary products (designs) ====== | ====== 1. Real products and imaginary products (designs) ====== | ||
| - | A product information can either be information about a real world object or it can be about a design (a realistic imaginary individual object). A design typically expresses information that is a 'product of the mind' and is intended as requirements for the fabrication and assembly of one or more real things. Such a specification of an imaginary thing necessarily has aspects (properties and qualities) that are deemed characteristics of the imaginary product. On the other hand the real individual things will have aspects that are observed or measured. The Gellish methodology recommends that designs and real world products are distinguished as different products, each with its own characteristics. When a product is fabricated and assembled according to a design it becomes a (materialized, realized) real physical object, that has characteristics that can be measured and which should be compliant with the characteristics of the design. Knowledge about kinds of things is valid for the real things as well as for the imaginary things, as long as the imaginary things are realistic. Examples of product models are: designs or real facilities, pieces of equipment, motors, cars, etc. or one of their components, such as a bolts, shafts, cables, etc. Bigger assemblies, such as a buildings, railways, factories or process plants are products as well. | + | A product information can either be information about a real world object or it can be about a design (a realistic imaginary individual object). A design typically expresses information that is a 'product of the mind' and is intended as requirements for the fabrication and assembly of one or more real things. Such a specification of an imaginary thing necessarily has aspects (properties and qualities) that are deemed characteristics of the imaginary product. On the other hand the real individual things will have aspects that are observed or measured. The Gellish methodology recommends that designs and real world products are distinguished as different products, each with its own characteristics. When a product is fabricated and assembled according to a design it becomes a (materialized, realized) real physical object, that has characteristics that can be measured and which should be compliant with the characteristics of the design. Knowledge about kinds of things is valid for the real things as well as for the imaginary things, as long as the imaginary things are realistic. Examples of product models are: modeled designs or models of real facilities, pieces of equipment, motors, cars, etc. or one of their components, such as bolts, shafts, cables, etc. Bigger assemblies, such as a buildings, railways, factories or process plants are products as well. |
| Real things and imaginary things are related by a materialization relation as follows: | Real things and imaginary things are related by a materialization relation as follows: | ||
| ^Name of left hand object^Name of kind of relation^Name of right hand object^ | ^Name of left hand object^Name of kind of relation^Name of right hand object^ | ||
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| |X-123.456|is classified as a|BINGHAM model 2X6A VCM| | |X-123.456|is classified as a|BINGHAM model 2X6A VCM| | ||
| |P-1201|is classified as a|multi stage deepwell pump| | |P-1201|is classified as a|multi stage deepwell pump| | ||
| - | The above expression specifies that X-123.456, being e.g. an equipment registration number, is a real world object that is derived from and should be compliant with the design object ('tagged item') P-1201. Because both objects have different identities (UIDs), they are both classified. Those classifications may be different, but should be consistent as in the example above, where the real object is classified by a manufacturer's 'model and size' which is a model (subtype) of the classifier for P-1201. | + | |P-1201BINGHAM model 2X6A VCM|is a model of|multi stage deepwell pump| |
| + | The above expression specifies that X-123.456, being an equipment registration number, is a real world object that is derived from and should be compliant with the design object ('tagged item') P-1201. Because both objects have different identities (UIDs), they are both classified. Those classifications may be different, but should be consistent as in the example above, where the real object is classified by a manufacturer's 'model and size' which is a model (subtype) of the classifier for P-1201 as is specified on the fourth line. | ||
| A design process for a product results in a product specification or product model that will be the performer or enabler of a process (the function of the product). Or more precise: a design is a product model that specifies the composition and characteristics of a realistic imaginary individual physical object that is intended to be realized by a materialized physical object and that is suitable to perform the required function. \\ | A design process for a product results in a product specification or product model that will be the performer or enabler of a process (the function of the product). Or more precise: a design is a product model that specifies the composition and characteristics of a realistic imaginary individual physical object that is intended to be realized by a materialized physical object and that is suitable to perform the required function. \\ | ||
product_modeling.txt · Last modified: 2018/11/02 22:44 by andries
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