预置旋转正交坐标系测量精度分布解析  

Analysis of measuring accuracy distribution of pre-rotation orthogonal coordinate system

作　　者：白雪[1] 程为彬[1] 程贤箬 汪跃龙[1] 霍爱清[1] 

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《传感器世界》2015年第11期7-11,共5页Sensor World

基　　金：国家自然科学基金资助项目(NO.61174191);陕西省科学技术研究发展计划项目(NO.2011K06-27);陕西省教育厅产业化培育项目(NO.2013JC08)

摘　　要：预置旋转正交坐标系在姿态测量时可增强原始信号幅度,较大地提高了姿态测量的总体精度。通过解算传感器三轴相对误差公式的方法,对预置旋转正交坐标系测量精度分布进行深入分析,研究了预置旋转正交坐标系姿态测量各区域的精度分布特征。图例表明,三轴相对误差在大角度井斜均存在极值点,并且三轴传感器输出相对误差随井斜和工具面角变化而变化。在小角度姿态测量时利用预置旋转的正交坐标系是比较理想的。The pre-rotated orthogonal coordinate system can enhance original signal amplitudes in attitude measurement, then improve whole accuracy of attitude measurement. By using the method of resolving three-axis relative error formulas of sensor, the measuring accuracy distribution of the pre-rotation orthogonal coordinate system is analyzed deeply. The distribution characteristics of the measuring accuracies in every measuring area are investigated. The illustrations show that the 3-axis relative errors have extreme points at large deviation angles, and vary with the inclination and the tool face angles. It＇s ideal to use the pre-rotation orthogonal coordinate system to measure small angle.

关 键 词：姿态测量 预置旋转 正交坐标系 精度分析 

分 类 号：TE92[石油与天然气工程—石油机械设备]