A Study on the Design Methodology for Plant Systems Using Knowledge Engineering Concept

应用知识工程的思想，研究了一种新的工厂系统设计方法。基于所提出的设计方法，开发了一个工厂系统设计专家系统。主要研究结果如下：1.建立了植物系统设计方法学的新概念。发现用于设计植物系统的设计步骤可以被设计成以下步骤。即1）搜索组成工厂的机器的候选者，2）确定机器的数量和能力，以及3）考虑初始和操作成本选择机器的最佳组合。基于上述认识，本文采用知识工程技术中面向对象的知识表示概念，提出了一种新的设计方法。该方法已应用于工厂设计专家系统。还研究了整数规划方法的应用。将知识工程技术与数学规划方法相结合，建立了一个混合型专家系统。smalltalk-80语言也被应用到工厂系统的管道设计中.应用该方法开发了船舶动力装置和热电联产装置的实际设计专家系统。所开发系统的有效性得到了很好的确认。该系统在Sun-3/110 C工作站上实现，该工作站被认为是工厂系统设计的有效智能终端。

A new design methodology for plant systems design was investigated using knowledge engineering concept. And an expert system for plant systems design was also developed based on the developed design methodology. The results obtained are summarized as follows:1. The new concept of design methodology for plant systems was established. It is found that the design steps for designing plant systems can be devised into the following steps. Namely, 1) searching the candidates of machineries consisting the plant, 2) determining the numbers and capacities of the machineries, and 3) selecting the optimal combination of the machineries considering the initial and operational cost.2. Based on the above understanding, the new design method was developed using the ogject-oriented knowledge representation concept which was one of knowledge engineering techniques. This method was adopted to an expert system for the design of plants. The application of an integer programming method was also investigated. And a hybrid-type expert system was built coupling the knowledge engineering technique and the mathematical programming method. The smalltalk-80 language was also applied to the piping design for plant systems.3. The expert systems for the actual design of a marine power plant and a cogeneration plant were developed using the above method. The effectiveness of the developed systems was well ascertained.4. The systems were implemented on a workstation Sun-3/110C which was found to serve as an effective intelligent terminal for plant systems design.