A New Demand Modeling for Prolong the Product Life Cycle Based on Triz Theory

In this paper, based on the existing approach and interpolation techniques, we propose a new method to prolong the life-cycle of products with upper level multi-function design. First, the multi-functions of most products are designed for solving the demands of user at the same period. However, these functions are seldom used except the main function. As a result, the original products lifecycle was ended earlier than it is designed. Finally, we solve this problem by using TRIZ innovation theory to obtain the optimal solution set of the original problem.