关键词: 功能裁剪, 技术系统进化, 物质&mdash, 场, 产品生命周期, 发明问题解决理论, 秸秆燃料成型机

Abstract: To enhance the pertinence and guidance of the system function reconstruction in improvement design process,and to improve the efficiency of innovative design,a functional trimming method was proposed based on the technical system evolution and substance-field transform combining theory of product life cycle.For different objectives such as harmful effects elimination,functional simplification and functional gain,ten functional trimming rules were extracted based on technical system evolution principle with the guide of system ideality and functional idealization strategy.The trimming object and priority were determined by the analysis on relative value of component function and tendency of damage to system completeness.The reorganization of helpful functions facing products at different stages of the life cycle was accomplished using trimming rules to guide the transformation and reconstruction of the substance-field model with the direction of substance-field model and technical system evolution trends.Based on the above methods,a functional trimming design model was built and an innovative design example of fuel briquetting machine was given to verify its effectiveness.

Key words: functional trimming, technical system evolution, substance-field, product life cycle, theory of inventive problem solving, fuel briquetting machine