Pii: S0954-1810(99)00002-3
نویسندگان
چکیده
The discrete mathematical representations of graph theory, augmented by theorems of matroid theory, were found to have elements and structures isomorphic with those of many different engineering systems. The properties of the mathematical elements of those graphs and the relations between them are then equivalent to knowledge about the engineering system, and are hence termed “embedded knowledge”. The use of this embedded knowledge is illustrated by several examples: a structural truss, a gear wheel system, a mass-spring-dashpot system and a mechanism. Using various graph representations and the theorems and algorithms embedded within them, provides a fruitful source of representations which can form a basis upon which to extend formal theories of reformulation. q 1999 Elsevier Science Ltd. All rights
منابع مشابه
The structure of a physical behaviour description facility
Many computer simulations, experimental testing and monitoring of physical systems produce vast amounts of quantitative data. These data have always been assimilated by trained and experienced personnel. Human beings use qualitative representations naturally for efficient decision making. An automated system which can provide such qualitative descriptions can be useful in various disciplines fo...
متن کاملIndexing and retrieval in machining process planning using case-based reasoning
To reduce the manufacturing time of a product, one effective way to develop a machining process plan for a new part is to retrieve a relevant case of process planning similar to a new desired part and then adapt the retrieved case to meet the new requirements. This paper proposes a mechanism for retrieval of process planning cases. The core of the retrieval mechanism contains: (1) a feature-bas...
متن کاملRule-base content verification using a digraph-based modelling approach
Ensuring that the content of a rule-base, which is being encoded, is free from problems of consistency, completeness, and conciseness, is necessary to avoid any performance errors that might occur during consultation sessions with the rule-based system. In this paper we have described, formally, content verification of a specific type of rule-base using a digraph-based modelling approach. Throu...
متن کاملNeural network modeling of active devices for use in MMIC design
This work can be classified into three parts: The first part is a multidimensional signal–noise neural network model for a microwave smallsignal transistor. Here the device is modeled by a black box, whose small signal and noise parameters are evaluated through a neural network, based upon the fitting of both these parameters for multiple bias and configuration with their target values. The sec...
متن کامل