基于轴角转换器的高速高准确度方位测角仪

High Accuracy and High Speed Inductosyn Azimuth Angle Measuring Instrument Based on Resolver-to-Digital Conversion

为了快速准确地进行方位角的测量,设计了以圆感应同步器、AD2S80A轴角转换器为主的方位测角仪,根据其工作原理,分析了产生的各种误差,得出存在的误差主要为一、二、四次谐波误差的结论。通过完善的电路设计,进行硬件误差干扰补偿,并采用对测量数据进行谐波分析、软件修正等技术提高了系统测角准确度,一次水平测角误差为±8″。采用动态切换技术成功地解决了系统高分辨力与高跟踪速度之间的矛盾,转速为120°/s时不丢数。系统兼有高速高准确度的特点,满足实际要求。

In order to measure azimuth angle accurately and quickly, an azimuth angle measuring instrument is designed, which is mainly composed of resolver-to-digital Conversion （RDC） and rotary inductosyn. According to its working principle, errors in various conditions are analyzed and the conclusion that there is mostly fundamental, quartratie, quartic harmonic error is reached. By perfect circuit designing to make compensation for disturb in harderware and doing harmonic wave analyse of the experimental data to emend the errors in software ,the instrument＇s measuring accuracy is improved. One round standard deviation of horizontal value is ± 8″. Dynamic switching technology is applied to solve the contradiction of high resolution and high tracking rate successfully, even the instrument＇s rotation speed is as high as 120°/s , no data may lose. The instrument has feature of high speed and high accuracy,which satisfied practical demands.