【作者】 熊欢；

【导师】 喻洪麟；

【作者基本信息】 重庆大学 ， 仪器科学与技术， 2011， 硕士

【摘要】 扭矩是最能表征传动轴动态性能和工作状态的典型参数之一。扭矩测试技术在各种机械产品的开发研究、质量检验以及故障诊断等方面得到了广泛的应用。利用扭矩测量系统采集实测数据,通过比较分析处理后,即可获得机械主轴的工作状态,实现对机械传动系统动态特性的监测、诊断与控制,从而减少事故的发生,使生产正常进行。因此,扭矩测量一直是国内外学者致力研究的热点之一。随着生产力的发展,扭矩传感器不仅要满足测量精度的要求,同时还需适应例如高温、强腐蚀、强冲击以及强振动等各种恶劣的工业生产环境。论文针对目前国内外对极端环境中机械传动系统的扭矩测量尚无有效解决方案的现状,在国家自然科学基金项目(项目编号:50975300)“基于球对称的交流电磁感应环型阵列器原理研究”和高等学校博士学科点专项科研基金(项目编号:20100191110038)的资助下,对用于极端条件下的环形球栅扭矩传感器开展了较为深入的研究,并重点对环形球栅扭矩传感器的数据采集系统进行了设计与研究,为实现极端环境下机械传动系统扭矩的在线动态测量,进行了较为系统的探索与实验研究,为进一步深入研究极端环境下机械传动系统扭矩测量工作奠定了基础。从工程应用的角度出发,论文首先对环形球栅扭矩传感器的结构和工作原理进行研究,并完成环形球栅扭矩传感器输出信号的相关特性分析;其次,针对环形球栅扭矩传感器的输出信号特点,提出相应的信号处理方法;然后,根据数据采集系统设计原则及参数要求,提出环形球栅扭矩传感器的数据采集系统的总体设计方案,并从信号调理、数据采集、机械主轴、电机控制、以及系统软件设计等方面完成系统详细设计。最后,对系统进行调试与实验,完成实验数据的分析和系统误差分析。论文利用虚拟仪器技术以灵活的软件功能代替固化硬件,简化系统的硬件电路,减少由硬件电路产生的干扰信号的影响,使测量结果更精确,同时提高了系统的可靠性、灵活性、通用性和可扩展性。更多还原

【Abstract】 In the various mechanical transmission systems, Torque is a typical mechanical parameter to reflect the dynamic performance and the labor status of mechanical transmission shaft, the testing technology has become necessary means of research and development, test and analysis, quality control, and fault diagnosis of various mechanical products. It’s working conditions which is obtained by using torque sensor systems to collect large number of measured data, then being comparatived and analyzed, which can achieve the monitoring, diagnosis and control to dynamic characteristics of mechanical transmission system. avoid the occurrence of the major equipment accidents and make the production safe. So,measurement of the torque is always one of the hot spots which are devoted by many scientists at home and abroad now. With the development of productive forces, torque sensors not only to meet the requirements of accuracy, is also required to adapt to such high temperature and strong corrosion, strong shock and strong vibration, and other harsh industrial production environments.Funded by“Research on the principle of the ring-space array based on the sphericallysymmetric and the principal of electromagnetic induction”the project of NaturalScience Foundation Of Country and Doctoral Program of Higher Education Research Fund,the paper under the extreme conditions of ring ball gratings torque sensor depth research carried out, focusing on the torque sensor ring ball gratings data acquisition system was designed and studied for the realization of mechanical transmission of torque under extreme environments On-line dynamic measurement, a more systematic exploration and experimental research, for further study of mechanical transmission system under extreme conditions of work laid the foundation for torque measurement.From the view of engineering application, the paper discusses and researches structure and working principle of the Torque based on ring ball gratings, and analyses the impact of ring ball gratings to the output voltage of the collection coils within reader head when the mechanical transmission shaft is in working, according to the spherically symmetric and the principal of electromagnetic induction. The paper make a thorough discuss and study on data colletion system for the feature of the ring ball gratings torque sensor: We designed a lab equipment for torque measurement according to system requirements; Hardware circuit of system includes permeability electrocircuit within the reader head and control circuit of motor; Design software of motor contorl and data acquisition based on LabVIEW in order to control motor and collcet signal of sensor. At last, the test and experiment of system is carried out. The elementary error of the experiment data has been analysed.Using virtual instrument technology in order to a flexible software instead of solidifying hardware, the system reduces hardware circuits, takes from the influence of undesired signal caused by hardware circuits, makes measurement results more accurate, and also enhances the reliability, fexibility, universality and extendability of the system.更多还原