Development of real-time process control system for precision and flexible V-bending with an on-line database
Development of real-time process control system for precision and flexible V-bending with an on-line database
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DOI：
10.1016/0924-0136(96)02338-2
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发表时间：
1996-06
影响因子：
6.3
通讯作者：
Ming Yang;K. Manabe;H. Nishimura
中科院分区：
文献类型：
--
作者：
Ming Yang;K. Manabe;H. Nishimura
针对V形弯曲成形过程，开发了一套基于专家经验的先进过程控制系统。实验数据库和模糊推理模型被用作实时过程控制的专家。在加工过程中，利用模糊模型对数据库中存储的冲压力-行程曲线及其它工艺参数进行实时检索和评价，以实现精确的预测控制。此外，一个学习过程，这是类似的工匠获得知识的方式，适用于数据库和模糊模型的改进，以科普新材料。进行了几个实验，以确认所开发的控制系统的有效性。结果表明，即使操作者没有关于材料特性和过程的信息，过程控制也能够自动地应对材料特性和其他成形参数的差异。
An advanced process control system based on expertise is developed for the V-bending process. An experimental database and a fuzzy inference model are employed as the expertise for real-time process control. The punch force-stroke curves and other process parameters stored in the database are retrieved in-process and evaluated by the fuzzy model for precise prediction control. Also, a learning process, which is similar to the way craftsmen acquire knowledge, is applied for database and fuzzy model improvements in order to cope with new materials. Several experiments were carried out to confirm the validity of the developed control system. The results show that the process control is capable of coping with differences in the material properties and other forming parameters automatically even if the operator has no information on the material properties and the process.