论文部分内容阅读
本文讨论用磨削火花温度作为讯号,在“在线”条件下,对加工表面质量及工件尺寸精度进行监控或控制的问题。文章首先介绍我院与北京钢铁学院共同研制的HWX—Ⅱ小目标红外测温仪原理,然后阐述用时间序列分析建立数学模型的方法研究证明,磨削火花温度是平稳的随机过程,在不同磨削条件下,用红外测量的磨削火花温度的规律与磨削区温度的规律基本一致,在不同磨削条件下,其频谱特性相同。对磨削火花温度系统而言,采用AR(6)、AR(7)、AR(8)是可行的。
This article discusses the problem of monitoring or controlling the machined surface quality and workpiece dimensional accuracy using the grinding spark temperature as a signal under “on-line” conditions. The article first introduces the principle of HWX-Ⅱ small target infrared thermometer jointly developed by our institute and Beijing Institute of Iron and Steel, and then elaborates the method of time series analysis to establish the mathematical model to prove that the grinding spark temperature is a stochastic and stochastic process. Under the cutting conditions, the law of the grinding spark temperature measured by infrared is basically the same as that of the grinding zone temperature. Under the different grinding conditions, the spectral characteristics are the same. For grinding spark temperature systems, AR (6), AR (7), AR (8) are possible.