Adaptive Process Models in Adaptive Control Machining

当前机械加工研究的目标之一是提供金属去除操作的自适应控制，使其能够在无人操作的情况下进行。这意味着控制系统必须能够对缓慢变化的条件（如刀具磨损）和突发事件（如刀具断裂、缠结型切屑的形成、颤振和其他现象）进行校正。一般的方法是使用计算机来做出通常由人工操作员做出的过程中的决策。首席研究员将研究用于描述金属切削过程的（经验）物理模型的质变。这些模型的原理将嵌入到控制计算机中。过去和现在的数据将被输入计算机，计算机不仅会通过改变处理条件来“适应”系统，而且如果需要的话，还会通过改变处理模式来“适应”系统。分析工作之后将进行实验评价。

One of the goals of current research on machining is to provide adaptive control of metal removal operations, so that they can be performed unattended by human operators. This means that the control system must be able to correct for slowly varying conditions such as tool wear, and for sudden events such as tool breakage, formation of tangling-type chips, on-set of chatter, and other phenomena. The general approach is to use the computer to make the in-process decisions that would normally be made by a human operator. The principal investigator will study qualitative changes in the (empirical) physical models used to describe the metal cutting process. The principles of these models will be embedded in the control computer. Past and present data will be fed into the computer, which will 'adapt' the system not only by changing the processing conditions, but also, if required, by changing the process model. Analytical work will be followed by experimental evaluation.