An expert system and processing method employing a three level hierarchical knowledge base that has a plurality of nodes coupled together. An uppermost level comprises a behavioral knowledge level, a middle level comprises a structural knowledge level and a lowermost level is an action level. Inference processing proceeds from the behavioral knowledge level through the structural knowledge level to a leaf node of the action level. One or more non-inferentially assessable utilities may be associated with the inference kernel of the expert system for accessing during inferential processing within the hierarchically structured knowledge base. A knowledge editor implements guidelines that structure received information in the desired hierarchical three level configuration. Further, interactive multimedia/hypermedia systems and methods are presented, which might be expert system based. Training and certification applications of the multimedia/hypermedia system/method are given.

Expert system and method employing hierarchical knowledge base, and interactive multimedia/hypermedia applications

EXPERT-MM: A knowledge-based system for maintenance management

Object-oriented design of FMS control software based on object modeling technique diagrams and Petri nets

A flexible manufacturing system (FMS) is an application of modern manufacturing techniques. Like for other manufacturing equipment, the success of an FMS is very much dependent upon its trouble-free operation. It is crucial to monitor all the possible faults or abnormalities in real time and, when a fault is detected, react quickly in order to maintain the productivity of the FMS. Because of the complexity of FMSs, the functionally complete diagnosis of an FMS should be based on all the available information and various advanced diagnostic techniques so as to get a satisfactory result. This paper proposes a systematic approach to fault diagnosis of FMSs that integrates condition monitoring, fault diagnosis and maintenance planning. An intelligent integrated fault-diagnosis system is designed with a modular and reconfigurable structure. The implementation of the integrated diagnosis system is presented in detail. The system can monitor the major conditions and diagnose the major faults of an FMS, and give corresponding maintenance planning as well. The developed system has been applied to an existing FFS-1500-2 FMS in Zhengzhou Textile Machinery Plant and has achieved good results.

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A systematic approach to integrated fault diagnosis of flexible manufacturing systems

A bibliography of expert system applications for business (1984–1992)

A diagnostic expert system prototype for CIM

A functional approach for the concurrent design of diagnostic systems

A description is given of the object-oriented analysis and implementation of a knowledge-based system for diagnosis of computer integrated manufacturing cells using a hybrid reasoning approach. The functional hierarchy of the manufacturing cell forms an inheritance hierarchy in multistrata format for the deep reasoning component, which leads to a set of symptom oriented production rules for final fault isolation and identification. Search path selection and computation are performed by a set of methods associated with the inheritance hierarchies. >

Object-oriented software for diagnosis of manufacturing systems

This paper presents a method for diagnosis in a large-scale system environment. The method utilizes the theory of hierarchical systems and hybrid diagnostic reasoning from AI (artificial intelligence). In shallow reasoning, which is a part of hybrid reasoning, the concept of entropy is used to determine which component (that might be responsible for a symptom observed) is to be tested next. The procedure is illustrated using a simulated example of a CIM (computer-integrated manufacturing) system, and is implemented on IntelliCorp's knowledge engineering environment (KEE).

A diagnosis scheme for a large-scale system

The large-scale automation and integration of manufacturing systems, which has become possible with the development of low-cost digital computers and communications networks, permits more efficiency and flexibility in meeting production schedules and can potentially lead to lower-cost and higher-quality products. However, an integrated system is very dependent upon the troublefree operation of all of its component parts; when a failure occurs it is critical to isolate the causes as rapidly as possible and to take appropriate corrective action.

Knowledge-Based Software for Diagnosis of Manufacturing Systems

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