A Method of Function Modeling Based on Extenics

Because it is always very hard to choose the best solution in conceptual design, this chapter will combine extenics with functional design. First of all, the overall function is decomposed and solved, for a number of solutions. Then, the contain system method which is included in expand analysis method is used to describe the functional relationship, establishing the functional method based on extenics. Finally, the optimal degree evaluation method is used to determine the merits of the system, thereby improving the function design of system. And this chapter takes spring coiling machine for example to prove the feasibility of this process.