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Modular design can shorten the product development cycle and enhance the product research and development capability of enterprises. To better solve the problem of module interface coupling after module partition, the present modular product design method has been improved based on the theory of inventive problem solving and axiomatic design theory. This article summarizes the engineering parameters commonly used in modular design based on the requirement analysis and conflict problems of modular structure design. And in the process of dividing the functional modules by fuzzy clustering algorithm, we propose defining and classifying the principle (technical) correlation between parts by these parameters. Then the coupling relation of each module interface is analyzed by the design matrix of axiomatic design and the conflict solving tool of the theory of inventive problem solving is utilized for decoupling. Finally, the high chair is taken as the design object and the design process is used to verify the feasibility of this method.

Disruptive Innovation (DI) is an effective method for a new firm to enter mature market. According to the composing analysis of the technical system for the product, six kinds of typical state in the technical system process can be detected. In accordance with technology system evolution analysis, two kinds of evolutionary technologies — mainstream evolutionary technologies and laggard evolutionary technologies — can be detected. Then, the conditions for forecasting DI technologies are established. Based on evolution path lines of TRIZ, the potential DI can be forecasted. As a case study, the video game console system is investigated. The study shows that the adoption of TRIZ evolution theory in forecasting disruptive technologies of product is feasible.

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