【作者】 杨超；

【导师】 马伯渊；

【作者基本信息】 西安电子科技大学 ， 机械电子工程， 2014， 硕士

【摘要】 本论文研制了一套基于虚拟仪器设计思想的、用于检测与分析伺服机构传动误差的测试系统。论文介绍了传动误差的测试原理，制定了测试方案，结合系统要求对所需硬件进行选型，然后进行了电路设计。论文重点论述了对测试系统的数据处理方法。首先对测试数据进行数据预处理及小波分析，有效地降低了信号中的噪声，然后对信号进行自相关和功率谱分析；最后进一步运用盲信号分离理论对测试误差进行分离，提取单个齿轮的信号特征。软件采用LabVIEW编写，应用模块化编程思想，完成了主程序模块、数据采集模块、数据存储模块、数据处理模块、报表生成模块的开发及调试。最后，搭建了测试系统，进行了传动误差测试和数据分析，表明本测试系统可行，具有一定价值。也能为以后导引头的伺服机构传动误差测试提供基础。更多还原

【Abstract】 An experimental system for measurement and analysis of transmission errors for aservo mechanism has been developed in this thesis. It is different with the traditionaltesting instruments that this system is based on the design philosophy of the virtualinstrument.The testing principle of transmission error was introduced and a testing schemewas designed in this thesis. Then, the required hardware types have been selectedaccording to system requirements and the circuits have been designed.The thesis put the emphasis on the techniques of data processing of the system.Firstly, the data pre-processing and the wavelet analysis have been carried out fortransmission curves obtained through measurement, which effectively reduced thenoise in the signals. Secondly, the time-frequency analysis including autocorrelationanalysis and power spectrum analysis have been conducted for the signals oftransmission errors. Finally, the transmission error has been separated based on theblind signal separation principle, which could extract signal character of each singlegear.As the programming language, LabVIEW was adopted to program the testingsoftware. Using the modular design concept, we have completed the development anddebugging of all the functional modules, such as master module, data acquisitionmodule, data memory module, data display module and report generation module.At last, the ideal results were obtained through testing and analyzing experiments,which confirmed the reliability and value of our measurement scheme and provideprimary basis for developing future measurement system of seeker servo mechanism.更多还原