Abstract: Aiming at the problems that the process optimization objectives of aircraft complex structural parts were changeable and the optimization elements were difficult to be determined, the value engineering theory was introduced and the process optimization value evaluation method was proposed based on process meta-activity. Orienting to the optimization requirements for dynamic changes in the enterprises, the value expected weight allocation algorithm was put forward, and the process value evaluation model of aircraft structural parts were established from meta-activity evaluation, cost evaluation and value evaluation. Finally, the optimization values of different process links were analyzed and the effectiveness of the method was verified through an optimization example.

Key words: evaluation method, process meta-activity, process optimization；value evaluation, value expectation

摘要： 针对飞机复杂结构零件工艺优化目标多变、优化要素难以确定的问题，引入价值工程理论，提出了基于工艺元活动的工艺优化价值评价方法。面向企业动态变化的优化需求, 提出了价值期望权重分配算法，从工艺元活动功能评价、成本评价、价值评价维度,建立了飞机结构件工艺优化的价值评价模型，针对不同工艺层级进行了优化价值分析。最后，通过一个优化实例验证了该方法的有效性。

关键词: 评价方法, 工艺元活动, 工艺优化, 价值评价, 价值期望