Fuzzy Optimal Robust Design: Theory And Application

A huge innovation of the 21st century is that the world has been a uniform global market in which any nation and enterprise must survive. With the development of science and technology, instead of price, quality has become the main form of the market competition. The robust design is to meet the product demands for high performance, low cost and high noise resistance. So many industrial countries emphasize on it in recent years. Practice has shown that good economic profits and social benefits have been achieved in the enterprises in which the robust design is considered during the product design. Therefore, the research of the robust design is very important.The author is one of the first research groups researching on robust design based on Physical Programming outside of America. After researched the fundamental theories and the effectiveness of Physical Programming, the author followed the research work of the leading researchers in this area and learned a lot from the discussions with them. The author believes that Physical Programming is quite valuable in both theory and practical applications, and further researches and wider applications are needed.Firstly, the paper presents the significance and development of the robust design in brief. Then the paper presents the theory of traditional robust optimal design and the theory of multiobjective optimization design especially physical programming in detail in the following section. In Section 3, a new model named fuzzy robust design optimization based on physical programming is proposed and two examples to illustrate its rationality are given. Then in Section 4, the physical programming was applied to robust design based on sensitivity analysis and an example about swing movable teeth reducer's robust design is presented to demonstrate the advantages of the proposed method. The final section concludes the whole paper and proposes the further research work.With the quick development of computer and CAD technology, the robust design based on engineering model has been the mainstream gradually in the field. The research of the paper issignificant not only in the development of the theory of robust design but also in the progress of our country's mechanical industry.