Architecture of an expert system for ergonomics analysis and design

The architecture of a computerized ergonomics expert system (ERGOEX) for am eliorating the conditions of workers at a workplace is described. The purpo se of this computer-assisted tool is to transform sets of worker data and w orking requirements into a specification or description of an artifact, whi ch is capable of producing ergonomic functions. The ergonomic advisor has b een developed so as to reach out to both expert and non-expert users, who c an thereby take advantage of this novel approach to workplace design withou t requiring sophisticated computing equipment. Turbo-Pascal has been chosen as language, rather than an expert system shell, or a logic-based language . In realizing the aims of "guidance" and "user friendliness" we have adopt ed the principle that the expert system must be able to interface with both novice and expert users. The analysis function is represented as hierarchy , workplace structure, environment, and evaluation and failure analysis at the highest level, and further breakdowns at lower levels. The design proce ss is divided into data input, generation of recommendations, critiquing, a nd referral to sources for basic supplementary information. Relevance to industry The article describes an expert advisory system to be used by Industrial En gineers, Ergonomists, factory personnel and medical staff for analysis, eva luation and design of a workplace. The methodology has been developed for b oth expert and non-expert practitioners, who can operate the system using a n interactive man-computer dialogue. (C) 1999 Elsevier Science B.V. All rig hts reserved.