单输入多输出耦合设计任务二阶段迭代模型研究

发布时间：2018-08-31 20:28

【摘要】：产品开发过程中单输入多输出耦合设计任务间存在复杂的信息依赖关系。采用单阶段方法的任务执行方式时,因所执行的任务数量多并且需传递的信息量大,致使任务间存在的复杂信息关系难以被理清,从而导致任务执行过程中的方案分配不够合理,任务间的迭代返工次数过多,产品开发周期过长。针对这些问题,在深入分析单输入多输出耦合设计任务单阶段迭代模型的基础上,提出了一种任务迭代过程中的信息处理策略,并构建了一种单输入多输出耦合设计任务的二阶段迭代模型及其求解执行时间的数学模型。应用该数学模型,可以计算得到最佳二阶段设计任务分配方案。以某发动机开发项目为例,进行了该方法的应用分析。研究表明,采取二阶段迭代模型,任务迭代执行时间比单阶段短,并且通过合理分配在1,2两个阶段执行的任务,能够获得最短的二阶段任务迭代执行时间。该方法根据任务间不同的信息关系选择合适的任务迭代模型,能够有效缩短产品开发周期,可为产品设计人员在产品开发过程中选择合理的任务执行方式提供一定的理论参考。
[Abstract]:In the process of product development, there are complex information dependencies between single input and multiple output coupling design tasks. Because of the large number of tasks performed and the large amount of information needed to be transmitted, the complex information relationship between tasks is difficult to be sorted out. As a result, the project allocation in the process of task execution is unreasonable, the iterative rework between tasks is too many, and the product development cycle is too long. In order to solve these problems, a strategy of information processing in task iterative process is proposed based on the analysis of single-stage iterative model of single-input multi-output coupling design task. A two-stage iterative model for single-input multi-output coupled design task and its mathematical model for solving the execution time are constructed. Using this mathematical model, the optimal two-stage design task allocation scheme can be calculated. Taking an engine development project as an example, the application of this method is analyzed. The results show that the task iterative execution time is shorter than that of single stage with the two-stage iteration model, and the shortest two-stage task iterative execution time can be obtained by reasonably allocating the tasks executed in one or two phases. According to different information relationships between tasks, this method can select a suitable task iteration model, which can effectively shorten the product development cycle and provide a theoretical reference for product designers to choose a reasonable task execution mode in the process of product development.
【作者单位】：三峡大学机械与动力学院;
【基金】：国家自然科学基金资助项目(51475265)
【分类号】：TB472

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