关键词: 产品设计, 协同特征, 任务转移矩阵, 任务总量, 迭代收敛

Abstract: To help designers to plan and adjust design tasks, based on real-time communications among coupled tasks, completion proportion parameter of task load was introduced to represent the collaborative features in product design. Association and function strength of coupled tasks were measured by task adjustment amount in iteration process. Design structure matrix was transformed to task shift matrix. The overall task load model was constructed. Rules for design process repetition caused by coupling and iteration convergence of task load were revealed. According to eigenvector matrix, main influencing factors for iteration convergence of task load were defined. By example, the proposed overall task load model and iteration convergence rules were verified to be rational and feasible.

Key words: product design, collaborative feature, task shift matrix, overall task load, iteration convergence