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随着高性能传感器与工业互联网的发展,在线油液监测技术获得了快速的开发与应用。从软件系统和硬件2个方面介绍了基于工业互联网的在线监测油液信息化系统构建方法;软件系统方面介绍了数据采集系统架构、油液在线监测系统架构、开发环境与步骤、功能模块等相关内容;硬件方面介绍了运动黏度传感器、水分含量传感器、污染度传感器、磨粒传感器4类主要传感器。此外,对在线和离线监测数据进行了对比,确认了在线监测的准确性和有效性。 相似文献
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在线监测系统以两个工业控制计算机组成上下位机,下位机主要负责控制和数据的采集,以及将数据以事先约定的方式及时传送给上位机;上位机在Windows平台下借助于Visual C++6.0,将监测到的数据信息转换为图形信息,实现图形界面的输出,从而直观形象地监测系统的运行情况。应用结果表明,系统具有较好的通用性。 相似文献
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加工中心刀具破损在线监控研究 总被引:1,自引:0,他引:1
随着机械加工自动化程度的提高,刀具状态的在线监控已成为迫切需要解决的问题,并越来越受到重视。本文篓塑主轴电机电流与刀具破损的关系,提出了一种刀具在线检测的方法。实验表明,电机电流信号可用来监控刀具的破损状态,并以此作为刀具更换的依据。 相似文献
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Monitoring of oxidation in gas environments typical of energy production is essential for determination of lifetime and condition of various components operating at high temperatures. One of the most important phenomena to be monitored is the oxide growth kinetics and its changes during the exposure. Three different monitoring methods have been presented in this paper. First, a conventional method called thermogravimetry based on the weight change measurement during oxidation is reviewed. Second, a novel monitoring technique, HT-CER technique, where contact electric resistance is measured as a function of time and distance of the measuring tip is presented. The third approach described involves a method under development, based on the change of capacitance over two growing oxide surfaces. Simple oxidation in air at a typical temperature for superheater tubes in boilers, 600 °C, has been selected as the reference condition for all of the monitoring methods. 相似文献
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重型机械中的轴类零件在高温锻造后需要进行矫直处理,以满足实际使用要求。综合现有的机械矫直和检测方法,设计大型轴类零件矫直设备的主机和液压控制系统。介绍矫直设备的结构及工作原理、矫直机的数控系统和控制方案;提出矫直、检测、清理氧化层的液压控制方案,并且对检测系统的稳定性进行理论分析和AMESim仿真,最后分析了矫直机的伺服系统,它提高了矫直机的精度。该矫直机设计有氧化皮清理机构,提高了矫直和检测的精度,减小了误差,检测矫直处于同一工位并形成反馈系统,提高了生产效率,为大型轴类零件的矫直提供了一种实用高效的新方法。 相似文献
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在我国冶金工业中,螺纹钢生产厂对螺纹钢线径的控制监测主要是采用人工检测控制法,即螺纹钢轧制离线后,在冷床上由工人用卡尺进行测量,这种方法是随机抽样检测,其精确度不高、速度慢、劳动强度大,且不能实时检测,无法及时掌控成品轧材规格尺寸和调整更换轧机轧辊,一旦发现超差则已有大批轧材超出了轧材控制范围,严重影响产品合格率和效益的提高。为此,提出了一种电容感应式螺纹钢线径在线监测系统及其检测方法,通过检测电容值实验对螺纹钢线径的测量,能够实现螺纹钢线径的高精度在线监测,从而提高螺纹钢成材率,且结构简单、设备维护成本低。 相似文献
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Optimum design of headstocks of precision lathes 总被引:1,自引:0,他引:1
Ting-Yu Chen Wei-Jiunn Wei Jhy-Cherng Tsai 《International Journal of Machine Tools and Manufacture》1999,39(12):1961
The optimum designs of headstocks of precision lathes are studied. Three different outer shapes of headstocks are explored. Thermal deformations due to heat generated by spindle bearings are considered. The objective is to minimise the overall deflection of the workpiece at the cutting point. The constraint is to force the fundamental natural frequency much greater than the working frequency in order to reduce dynamic deflections. The design variables include the shape dimensions, the locations of the spindle bearings, the stiffnesses of the spindle bearings, the dimensions of the fins and the locations of the fins. The genetic algorithm is utilised to solve these mixed-variable optimisation problems. Optimum solutions for the three different types of headstocks are found and discussed. 相似文献
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