装配工装在飞机产品生产过程中处于飞机设计的下游,受到飞机装配件设计及其装配工艺的影响以及飞机生产准备周期限制,时间紧迫,任务繁重。传统的飞机装配工装以文本、二维图形式表达为主,信息是静态的,缺乏唯一的数据源易导致飞机-装配...装配工装在飞机产品生产过程中处于飞机设计的下游,受到飞机装配件设计及其装配工艺的影响以及飞机生产准备周期限制,时间紧迫,任务繁重。传统的飞机装配工装以文本、二维图形式表达为主,信息是静态的,缺乏唯一的数据源易导致飞机-装配工装协同变更管理效率低、准确性差,针对以上问题提出一种飞机-装配工装协同变更方法:利用基于模型的定义(Model based definition,MBD),建立了飞机和装配工装MBD模型关系架构,并结合相关的变更传播计算方法实现了飞机设计结构变更对装配工装变更影响的主动、自动化预测和分析。通过一套飞机壁板开口加强框的装配工装变更设计实例验证了该方法的可行性。展开更多
一个需求规约中的某一个需求发生变更有可能使得整个需求规约都发生变化,为了维护需求规约的正确性和一致性,我们需要分析一个需求的变更对另外的需求产生影响的可能性以及产生怎样的影响,这便是需求变更影响分析。常见的需求文本通过...一个需求规约中的某一个需求发生变更有可能使得整个需求规约都发生变化,为了维护需求规约的正确性和一致性,我们需要分析一个需求的变更对另外的需求产生影响的可能性以及产生怎样的影响,这便是需求变更影响分析。常见的需求文本通过自然语言描述。本文基于自然语言描述的方式。结合已有的NLP(Natural Language Processing,自然语言处理)技术,给出一种定量的需求变更影响分析方法,通过这种方法,本文可以分析某个需求的变更对其他需求产生影响的可能性。展开更多
Engineering change management is a special form of problem solving where many rules must be followed to satisfy the requirements of product changes.As engineering change has great influence on the cycle and the cost o...Engineering change management is a special form of problem solving where many rules must be followed to satisfy the requirements of product changes.As engineering change has great influence on the cycle and the cost of product development,it is necessary to anticipate design changes(DCs)in advance and estimate the influence effectively.A process simulation-based method for engineering change management is proposed incorporating multiple assessment parameters.First,the change propagation model is established,which includes the formulation of change propagation influence,assessment score of DC solution.Then the optimization process of DC solution is introduced based on ant colony optimization(ACO),and an optimization algorithm is detailed to acquire the optimal DC solution automatically.Finally,a case study of belt conveyor platform is implemented to validate the proposed method.The results show that changed requirement of product can be satisfied by multiple DC solutions and the optimal one can be acquired according to the unique characteristics of each solution.展开更多
文摘装配工装在飞机产品生产过程中处于飞机设计的下游,受到飞机装配件设计及其装配工艺的影响以及飞机生产准备周期限制,时间紧迫,任务繁重。传统的飞机装配工装以文本、二维图形式表达为主,信息是静态的,缺乏唯一的数据源易导致飞机-装配工装协同变更管理效率低、准确性差,针对以上问题提出一种飞机-装配工装协同变更方法:利用基于模型的定义(Model based definition,MBD),建立了飞机和装配工装MBD模型关系架构,并结合相关的变更传播计算方法实现了飞机设计结构变更对装配工装变更影响的主动、自动化预测和分析。通过一套飞机壁板开口加强框的装配工装变更设计实例验证了该方法的可行性。
文摘一个需求规约中的某一个需求发生变更有可能使得整个需求规约都发生变化,为了维护需求规约的正确性和一致性,我们需要分析一个需求的变更对另外的需求产生影响的可能性以及产生怎样的影响,这便是需求变更影响分析。常见的需求文本通过自然语言描述。本文基于自然语言描述的方式。结合已有的NLP(Natural Language Processing,自然语言处理)技术,给出一种定量的需求变更影响分析方法,通过这种方法,本文可以分析某个需求的变更对其他需求产生影响的可能性。
基金supported by the National Natural Science Foundation of China(No.51805253)Research Start-up Fund Project of Introduced Talent(No.YKJ201969)Equipment Project of Ship Assembly and Construction for the Ministry of Industry and Information Technology(No.TC190H47J)。
文摘Engineering change management is a special form of problem solving where many rules must be followed to satisfy the requirements of product changes.As engineering change has great influence on the cycle and the cost of product development,it is necessary to anticipate design changes(DCs)in advance and estimate the influence effectively.A process simulation-based method for engineering change management is proposed incorporating multiple assessment parameters.First,the change propagation model is established,which includes the formulation of change propagation influence,assessment score of DC solution.Then the optimization process of DC solution is introduced based on ant colony optimization(ACO),and an optimization algorithm is detailed to acquire the optimal DC solution automatically.Finally,a case study of belt conveyor platform is implemented to validate the proposed method.The results show that changed requirement of product can be satisfied by multiple DC solutions and the optimal one can be acquired according to the unique characteristics of each solution.
