Abstract: Under the guidance of the TRIZ basic theories and methods, this study proposes an
innovative design method of tillers based on the original innovation process model of the demand
revolution law. A product of the same kind is first selected as the prototype of the development
process in the future and then new user demands are determined using the five-step method. In
combination with research methods, namely literatures, surveys, and voice of customers (VOC), etc.
establish user demand expression. Then a functional model of tillers is established based on the
original machine system analysis and tiller PDS, a design concept is concluded using the traditional
methods and CAI software, and finally products are developed. This can effectively improve the
modeling design, functional design, and mechanism design of tillers, so as to make the tiller design
process more scientific and systematic.

Key words: TRIZ, tiller, demand revolution law, product innovation design