关键词: 复杂产品设计变更, 设计任务, 设计任务变化量, 入度演化规律

Abstract: To analyze the impact of change on Complex Product Design(CPD) tasks,an impact analysis model was proposed based on in-degree evolution laws.A model of Structure-Task Network (S-TN) in CPD was constructed to research on the mapping relations of design task variations caused by changes and in-degree variations in network.Based on the mechanism of growth,elimination and optimal connection,an Evolution model of S-TN (ES-TN) under the impacts of changes in CPD was constructed to analyze the in-degree evolving rules.The relation model of design task variations and in-degree evolving rules was presented to analyze the change impacts on design tasks.A practical application was illustrated to verify the feasibility and effectiveness of above researches.

Key words: change in complex product design, design task, design task variations, in-degree evolution laws