Computer aided design system has provided effective help in alleviating the designer with heavy manual labor and raising efficiency and quality, but not in the field of industrial design for designer with professional support, mainly because the present software couldn’t remain synchronization with designer’s intention. In this paper, response to the requirements of providing dynamic design resources, expression is researched from the view of design state, and by the demand and analysis traces the design process history information, design intentions expression method is researched on the basis of design state, at last design intention expression model is built.

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A design thought based on ergonomics constraint is introduced to machine tool operating components design in this paper, and a design method of machine tool operating components is researched and provided which is realized by applying database technology and Secondary development technology based a '3D entity parameterized modeling software system platform. This method tests and verifies instrumentalizing the knowledge about industrial design and ergonomics.

During the design processing of the future exploratory products, requirements from users seems to be a key factor for products availability achievement. As a practical user modeling method, Persona may accomplish the potential needs data mining effectively based on the analyzing of users. This review mainly focused on how to apply the persona in the exploratory products investigation to acquire useful information from the products design. The method to establish persona and the operating rules were also discussed in this article. The concept of the mobile internet device in future was used as an case to demonstrate the persona mentioned above.

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