Abstract
Attractive products are changed significantly by requirement definition and conceptual design phase. Quality of product concept, which is result of these phases, depends heavily on creativity of designer or development team. Therefore, it is difficulty that computer-aided system supports a creative and inventive thinking process, to search a creative design solution. To overcome its difficulty, we developed the synthesis approach which combined the Particle Swarm Optimization (PSO) algorithm and the Particles Method of Unified Structured Inventive Thinking (USIT) for supporting to top-down thinking in problem solving process, and confirmed the validity of this approach. In this paper, in order to give a connection rule of time dependence for particles, we introduced the Evolution of technological systems.
