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Adaptive Controller for a Metal Cutting Process

机译:金属切割过程的自适应控制器

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摘要

As presently practiced, metal cutting is a relatively inefficient process. The equations relating input parameters and the finished product are mainly empirical, and they are applicable only over limited ranges and conditions. A particularly significant problem is the machining of recently developed high-strength materials for the aerospace industry. Present numerical control systems cannot achieve optimum machining because the feedback loops are closed only around the dimensional position of the tool and workpiece. This paper describes the design of an adaptive controller which, in conjuction with a numerical control system, extends the process measurement to the actual tool-work interface and adjusts the process input parameters so as to optimize cutting performance. The system can be programmed to optimize a selected performance criterion such as cost while applying constraints on other factors such as surface finish and machine horsepower.
机译:按照目前的实践,金属切割是一个相对低效的过程。与输入参数和最终产品有关的方程式主要是经验公式,它们仅适用于有限的范围和条件。一个特别重要的问题是用于航空航天业的最新开发的高强度材料的机加工。当前的数控系统不能实现最佳加工,因为反馈回路仅在工具和工件的尺寸位置周围闭合。本文介绍了一种自适应控制器的设计,该控制器与数控系统结合,将过程测量扩展到实际的工具工作界面,并调整过程输入参数,以优化切削性能。可以对该系统进行编程,以优化选定的性能标准(例如成本),同时对其他因素(例如表面光洁度和机器功率)施加约束。

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