双通道数字伺服系统在航空测试中的应用  

Application of Dual-channel Digital Servo System in the Aviation Testing

作　　者：王玉松[1] 高欢[1] 刘连生[1] 罗长杰[1] 

机构地区：[1]中国民航大学基础实验中心,天津300300

出　　处：《自动化与仪表》2011年第11期53-56,60,共5页Automation & Instrumentation

基　　金：中国民航大学科研基金(07kym12);中央高校基本业务费中国民航大学专项基金(ZXH2010D023);中国民航总局科技基金(MHRD201019)

摘　　要：根据单通道表征飞行高度误差大的问题,文中采用粗精双通道伺服系统,提高了测试精度。介绍了双通道数字伺服系统的原理,给出了粗精角度分离的方法。基于DSC转换模块设计了粗精双通道数字伺服系统,实现了伺服系统的数字化,满足了航空维修手册规定的测试科目要求。采用单片机做控制器,实现了数字-自整角机信号的转换。提出一种测量谐振电容的新方法。分析了系统的静态特性和动态特性,采用最小二乘法对测量数据进行了捏合,试验结果证明模块转换精度较高,线性度良好。A digital servo system with coarse-fine channel presented in this paper improves the test precision of aircraft instrument to solve the problem of large errors of flight altitude stating in a single channel.The theory of digital servo system with dual channel and the method of coarse-fine angle separating were introduced in this paper.DSC conversion module was designed based on coarse and fine dual-channel digital servo system to realize the digital servo system to meet the testing requirements of the aviation maintenance manual test subject requirements.Using the microcontroller to achieve the figures-Synchro signal conversion.Propose a new method for measuring the resonant capacitor.Analyzed the static and dynamic characteristics of servo system and used the least squares data processing.The test result indicates the high module conversion accuracy and good linearity.

关 键 词：双通道 数字-自整角机转换 最小二乘法 粗精角度分离 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]