A Second-Generation Expert System for Computer-Aided Control System Design

Abstract

Abstract The CACE-III expert system for designing series lead-lag compensators for single-input/single-output plants to satisfy three frequency-response specifications has been implemented using the Gold Works inference engine and expert-system development tools. The implementation makes use of the frames and user-interface features of Gold Works to provide an environment from which further extensions of the design approach or other design methods can be created in an orderly fashion. The control-analysis program Matrix x has been used to perform the required control-system modeling and analysis calculations at the request of the expert system The tools that have been developed for handling the varied interactions between the expert system and the numerical applications program are described. Also, a number of ways in which the present design system can be improved and expanded are presented