OHCS: Hydraulic Circuit Design Assistant

Yusei Nakashima and Tomio Baba

This paper describes an expert system, called OHCS, which actually has been deployed for designing hydraulic circuits. OHCS enables to increase productivity by integrating the four processes of expert reasoning, designing, analysis, and drawing inspection. The application of artificial intelligence to this domain poses a number of challenges, including: how to integrate these four processes, how to realize drawing inspection, and how to couple qualitative reasoning and numerical computing. To overcome this problem, OHCS employs various kinds of AI technologies such as time-state reasoning, qualitative reasoning, hypothetical reasoning, constraints propagation technique, TMS, AIMS, and symbolic algebraic manipulation. In this paper, our approach to dealing these problems is described.

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