【作者】 刘浩然；

【导师】 郑绳楦；

【作者基本信息】 燕山大学 ， 通信工程， 2004， 硕士

【摘要】 随着扭矩测量技术的发展,各种非接触扭矩测量方法不断涌现,传统的应变式扭矩测量技术已经不能满足要求日益苛刻的轧机工况监测需要。为使传统的应变式扭矩测量技术适应现代化生产设备要求,改造现有的扭矩测量系统已经成为钢铁轧制企业快速提高生产力的关键技术之一。本文在广泛调研和查阅相关资料的基础上,对大型轧机主传动轴扭矩的测量进行了研究,给出了一种新的扭矩测量信号无线传输方法,并设计了轧机接轴扭矩信号测量电路。 首先分析了国内外扭矩传感器的研究现状和目前存在的问题,然后在此基础上阐述了本文的研究方向。在对大型轧机主传动轴进行了动力学分析之后,给出了所设计的扭矩测量模型。 在设计过程中,为了减少误差,提高测量精度,我们采用了专门的传感器补偿芯片进行误差补偿。使用智能控制系统,对测量数据进行AD采样、智能算法分析等操作,通过控制发射电路,将转化后的数字信号快速发射给地面接收装置。为提高系统抗干扰性能,采用特殊编码方式将测量信号按照一定的格式收发。数字信号发送与接收电路采用半双工收发一体RF数传模块,采用FSK调制方式,具有良好的频率稳定性以及抗干扰能力。为解决旋转状态下扭矩传感器的能量供给问题,利用电磁耦合原理设计了一套高频感应电源装置,实现了轴上扭矩传感器无线能量供给功能。最后利用Delphi编制专门软件在pc机上进行数据跟踪,实现测量数据的动态显示、分析和存储过程,同时建立模拟小轴系反馈控制模型,并对测量模型进行实验分析,从而为以后的产品化奠定基础。更多还原

【Abstract】 With the improvement of the strain torque measurement technology, various of untouched strain torque measurement appears. Traditional strain torque measurement technology can’t fill the exigent need of the inspecting of steel rolling equipment’s working condition. For these reasons, the alteration of strain torque measurement become very important for improving the rolling efficiency. Based on lots of reference materials and research on domestic and foreign research status, we design a sort of torque sensors based on digital technology.Firstly, we analyze the national and international research status. After analyze the steel rollings, we give the design model.In order to reduce error and increase measurement precision, we use AC Strain Bridge, phasic detector, locking-phasic amplifier and sensor chip for compensation. We also use intelligentized chip to realize AD sampling, intelligent analyze and data sending control. We arrange data for special way to improve system’s ability of anti-jamming. We use semiduplex sending-receiving incorporating RF electrocircuit and FSK modulating in data sending-receiving system. In order to solve the problem of wireless energy supply in rotation circumstance, a set of high frequency wireless inductive power supply is designed, and the function of wireless energy supply is realized. At last, a data acquisition system is programmed by using Delphi in order to display and analyze data. After setting up a simulating steel model based on feedback control, we evaluating the capabilities of the designed torque senor, perhaps it will be lead into the product market in the future.更多还原