【作者】 张辉；

【导师】 杨育林；

【作者基本信息】 燕山大学 ， 机械设计及理论， 2004， 硕士

【摘要】 超硬材料涂层零件接触疲劳的在线监测与控制是纳米结构超硬材料涂层零件接触疲劳强度及表面摩擦学性能评估方法及评估理论研究的重要的一部分。本文基于计算机辅助测试技术为手段的在线监测与控制理论,以超硬材料涂层推力球轴承为试验对象,率先设计并实现了超硬材料涂层零件接触疲劳试验装置在线监测与控制系统。 本文首先对超硬材料涂层零件接触疲劳试验装置进行了结构、原理等分析,并结合其试验对象(涂层推力球轴承)之间的主要受力及其疲劳破坏特点等特性,确定了主要监测参数(温度、摩擦扭矩、振动和转速);基于前人的相关研究成果及作者的探索,设计了在线监测与控制系统方案,建立了在线监测与控制系统;开发了信号放大、A/D 转换和数据传送的硬件模块,大大提高了监测系统的实时性;设计了计算机处理平台在 Windows98环境下,以 Picoscope 软件为开发工具,实现检测系统多通道数据采集、数据实时处理和分析的计算机控制软件,提供了友好的可视化人机界面;并通过 Picoscope 数据转换模块,实现了测量信号之间的数据交换。 最后,介绍了在线检测系统的辅助性工作,完成了传感器的安装工作,然后以超硬材料涂层推力球轴承为试验对象,对整个在线监测与控制系统进行了试验调试,检验了系统运行的正确性和稳定性。 本系统开发和研制的成功,为纳米结构超硬材料涂层滚动接触疲劳失效机理及纳米结构超硬材料涂层摩擦学性能评估理论的研究提供了有效的试验技术和方法,对于纳米材料科学和纳米结构超硬材料涂层技术的开发、应用将产生重要的影响,具有重要的实际意义。更多还原

【Abstract】 The online monitoring and controlling play very important roles on the contact fatigue and surface tribology performances of the nanometer structure coating superhard materials evaluation method and evaluation theory. On the basis of the computer assisted technology and online monitoring and controlling theory, and a series of tests with the thrust-ball beatings of superhard coating materials, the author designed and realized the online monitoring and controlling system of fatigue behaviors of superhard coating material components. Firstly, this thesis analyzed the performances and characteristics of the superhard coating materials components. The author determined the main monitoring parameters (temperature, friction torque, vibration and rotational speed). Secondly, based on the research works of the predecessors, the author designed the online monitoring and controlling system, realized the online monitoring and controlling system, developed hardware module of signal amplifier, and A/D conversion and data transmission. It improved real-time performance of the monitoring and controlling system perfectly. Thirdly, under the windows98 system and Picoscope software circumstance, the thesis realized multichannel data acquisition, real-time process and analysis of the system. It provided friendly and visual interface, which is helpful to experiments. It uses Picoscope data conversion module to realize the data exchange between the measurement signals. Finally, this thesis introduced the auxiliary work of the checking online system, finished installation and calibration of the sensor. Then, the checking system is validated to run correctly and steadily through experiment debugging. The studies of the thesis will improve availably test technology and method of the evaluation theory of the fatigue behaviors and tribology performances of superhard coating components. It plays very important roles on the development and application of nanometer material science and nanometer superhard material coating technology.更多还原