• CN:11-2187/TH
  • ISSN:0577-6686

›› 1995, Vol. 31 ›› Issue (4): 18-24.

• 论文 • 上一篇    下一篇

基于过程集成的闭环动态工艺规划系统

王先逵;李志忠;刘成颖;田文生   

  1. 清华大学
  • 发布日期:1995-07-01

CLOSED-LOOP AND DYNAMIC PROCESS PLANNING SYSTEM BASED ON PROCESSING INTEGRATION APPROACH

Wang Xiankui;Li Zhizhong;Liu Chengying;Tian Wensheng   

  1. Qinghua University
  • Published:1995-07-01

摘要: 描述了一个在过程上实现工艺规划与车间规划集成的闭环动态工艺规划系统,建立了实用化CAPP系统的新模型,丰富了动态CAPP的概念。它能根据车间环境的状态,充分利用制造工艺和车间环境的柔性产生优化的工艺方案。系统在车间环境约束下采用专家系统技术进行非线性工艺规划,产生可选工艺路线和工序可选设备。在一个由工艺路线选择、设备动态优化选择和车间优化规划构成的闭环系统中,以高生产效率为目标,根据推广的关键路线分析的结果和一系列启发式知识动态地选择工艺路线和设备,最后获得有较高实践意义的结果。

关键词: CAPP, 车间规划, 专家系统

Abstract: A dynamic process planning system, which integrates nonlinear process p1anning and job shop scheduling at the processing level but not result levels is presented. Taking advantage of the flexibility of manufacturing process and job shop environment, it reaches a nearly optimal solution according to the dynamic status of job shop environment. An expert system of nonlinear process planning generates alternative routes for every product and alternative machines for every machining operation. In the closed-loop that combined of route selection, machine selection and job shop scheduling, several be uristic rules based on CPA (Critical Path Analysis) are used to select nearly optimal route and machines dynamically to gain a nearly highest production efficiency. All these techniques are described in detail.

Key words: CAPP, Expert system, Job-shop scheduling