【作者】 周巧玲；

【导师】 冯浩；

【作者基本信息】 浙江工业大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 转矩的测量对各种机械产品的研究开发、测试分析、质量检验、安全和优化控制等工作有重要的意义。现有的转矩传感器一般结构复杂,制造安装困难。本文介绍了一种结构简单,测量精度高的新型转矩传感器——基于FPGA和单片机的光栅转矩传感器。本文主要工作包括:1、介绍了当前转矩传感器的发展现状,分析了各种类型转矩传感器的特点和存在的不足。2、介绍了光栅转矩传感器的工作原理,将光栅输出的光电信号转换成矩形波信号,通过分析旋转轴的各种运动对光电输出信号的影响,得知两路矩形波信号的相位与扭转角的关系,从而得到系统测量方案,并推导出具体的测量计算公式。3、构建了系统实验平台,主要由被测量主轴、光栅对机构、光电装置座三个部分构成。4、基于现场可编程门阵列(FPGA)和单片机,完成系统硬件电路及软件设计。5、根据动态测量数据的时变性、随机性、相关性和动态性等,研究了动态测量数据的处理方法。6、对系统调试和实验。采取先对各个单元模块独立调试与实验的方法,对每个单元电路的性能进行分析处理,然后进行联合调试与实验,并对传感器进行标定。7、对系统误差进行分析,并提出了改进措施。更多还原

【Abstract】 Torque measurement is fundamental to the designing, testing, quality checking and optimization controlling of all mechanical products. The present torque sensors usually have complex structures and are hard to make and fix. A new kind of torque sensor based on FPGAand single chip computer, with simple structure and high measuring accuracy--grating torquesensor is introduced.The thesis is structured as follows:1. The thesis first introduces the development of torque sensors at present and analyzes the merits and demerits of all kinds of torque sensors.2. Then it introduces the measuring principle of the grating torque sensor, analyzes the output signal influenced by the running state to get the relationship between the phase of the two signals and the torque angular, and setups the system realization method and the computation formula.3. It setups the system experimental flat consisting of axis, grating and photoelectrical conversion fixtures.4. It designs hardware and software of the system based on FPGA and single chip computer.5. It discusses the dynamic measurement data processing according to the characteristic of time-variable, random, correlation and dynamic.6. It carries out the test and experiment of the system and analyzes the experiment data. Torque sensor calibrating is finished by experiments.7. It finds out the errors of the measurement system for torque. The corresponding compensation methods are discussed in the thesis.更多还原