Abstract: In the premise that the basic functions of a product are satisfied, the customer’s ergonomic feelings to a product are often their main reasons for choosing. A new method, which could identify platform and individual parameters according to the customer's preference to a product is presented, and this method could help designers grasp design parameters' influence on the customer's feelings, and offered the theoretical foundation for the designer's understanding the customer's demands accurately. The bicycle frame is taken as an example to illustrate.

Key words: Ergonomic design, Factor analysis, Kansei engineering, Orthogonal design, Platform, Product family design, Variance analysis