A declarative representation of component selection guidelines and rules in the design for assembly of printed circuit boards

摘要

This paper presents a declarative representation of design for assembly guidelines and rules in the design of PCBs. It considers multiple representations of these guidelines and rules using the four commonly applied representation schemes in knowledge representation namely: logic, semantic networks, production system rules, and frames. These representation schemes share common characteristics. They can be programmed with existing computer languages and stored in memory. They are designed with facts and other knowledge contained within them can be used in reasoning. That is, the knowledge base contains a data structure that can be manipulated by an inference system that uses search and pattern matching techniques on the knowledge base to answer questions, draw conclusions or otherwise perform an intelligent function. The work presented here forms part of a wider research programme which focusses on the design for assembly of PCBs for Surface Mount Technology (SMT) and Fine-Pitch Technology (FPT).