Decision-Making Model of Quality Improvement Based on Quality Cost

According to the economic characteristic of quality improvements, an idea to use quality cost data as the base to make decisions on quality improvements is presented. After analyzing the drawbacks of the traditional analysis of quality cost, the paper reviews the whole realization process of products and introduces the concept of quality activity chain. The quality cost system can be set up based on quality activity chain. The paper also points out that the quality cost occurred in quality activities may have great effect on one another, so the analysis of quality cost must be carried out systematically. A decision-making model of quality improvements based on quality cost is researched, which consists of the quality cost database, decision-support system of quality improvements, and estimation system, and then the procedure using the model is described subsequently. This model can be used in the analysis of quality cost data to define the optimization goal of quality management, and to provide the bases to make decisions on quality improvements.