虚拟环境下机床主传动系统故障诊断的仿真实现

Using the Technology of Virtual Reality in the Simulation of Fault Diagnosis of Machine Tool' s Main Spindle Driving System

本文介绍了用AutoCAD完成机床主传动系统三维实体造型,用 Visual C++、Visual LISP等工具完成主轴箱轴承、齿轮、轴等部位在运行中出现故障时的立体动画。经压电晶体加速度传感器实时检测机床的振动信号,对这些信号进行分析(统计处理、频谱分析等)提取出故障特征,经人工神经网络、模糊决策及专家系统等手段进行决策,判定故障部位和程度,可在微机上直观地观察主轴箱在运行过程中,各故障具体部位及损伤程度的虚拟现实情况。

This paper introduced how the 3D entity sculpting of main driving system of machine tools was finished by AutoCAD, how the solid moving picture when the bearings、gears and shafts of headstock are fault at the time of operation was accomplished by using the tools of Visual C + + and Visual LISP. By the acceleration sensors of piezocrystal, we can check the vibration of the machine tools. After analyzing these signals by using the methods of statistics, frequency analysis etc., the characteristics of fault are picked up. By the decision - making of Artificial Neural Network (ANN), fuzzy identification and expert system , it is clear where and how the machines are fault when the machine is working, it is displayed in the screen directly and instantly.