Fuzzy Decision Approach for Electronic Industrial Work Induced Stress Analysis in Ergonomics

摘要

This paper aims at investigating and exploring critical "work-induced-stress" for technicians working in a chip manufacturing industry to pinpoint the existing weaknesses in applying human factors to increase yield and productivity. Various work stresses ranging from environmental, physical and mental aspects were assessed by the technicians investigated, and the results are tabulated. In order to model the imprecision of human judgement and the uncertainty of consequences, fuzzy decision making approach was utilized. A single attribute (productivity) was considered and a fuzzy set of different alternative stresses was derived, where each alternative stress in the set was characterized by a grade. The alternative that corresponds to maximum grade was considered as the highest severity stress. To capture the optimistic and pessimistic attitude of technicians' judgements and to verify the typicality of result, maximax method was further verified by fuzzy Hurwicz rule, fuzzy regret principle and fuzzy expectation worth.