双通道多极旋转变压器误差补偿  

Error compensation for twin-channel multipole resolvers

作　　者：肖跃华[1] 葛永强[1] 张渝怀[1] 

机构地区：[1]北京航天控制仪器研究所,北京100854

出　　处：《中国惯性技术学报》2007年第5期573-575,共3页Journal of Chinese Inertial Technology

基　　金：国防科学技术预研基金项目(513090201A06002)

摘　　要：双通道旋转变压器的精度直接影响到平台的性能和导航系统的精度。从理论上分析了双通道旋转变压器误差的产生原因,表现为零位误差、幅值误差等。提出了一种新的误差补偿方法,该方法通过将在精密转台上测得的数据进行傅立叶分析,利用快速傅立叶分析得到误差数据所包含的基波与各次谐波,以此建立误差数学模型。通过MATLAB求解出数学模型的系数,再将模型写入单片机中实现实时误差补偿。在实验中,经过建模补偿,试验样机角度误差从最大90多角秒补偿到±5″,重复性好。该补偿方法可有效提高传感器的精度。The precision of twin-channel resolvers directly influence the platform performance and navigation precisionl. Its theoretical analysis was made which show that the zero-position error and magnitude error were the main causes. The paper put forward a new compensation method which used FFT and MATLAB to generate its error model, and then wrote this model into MCU to realize the real-time compensation. The experiment shows that the resolver＇s error can be reduced from 90＂ to 5＂ by the compensation and. the repeatability is high. The method can effectively increase the sensor＇s precision.

关 键 词：双通道多极旋转变压器 误差补偿 单片机 误差模型 

分 类 号：U666.1[交通运输工程—船舶及航道工程]