加速度计相关误差模型辨识  

Identification of the Correlative Error Model of an Accelerometer

作　　者：徐强 郑元熙 

机构地区：[1]北京控制器件研究所

出　　处：《中国惯性技术学报》1991年第2期93-98,共6页Journal of Chinese Inertial Technology

摘　　要：本文讨论陀螺加速度计输出误差与陀螺加速度计各回路状态变量间的相关误差模型的辨识方法。陀螺加速度计各回路的状态变量包括:伺服回路引出的浮子的倾角,磁悬浮回路引出的浮子的轴向位移与径向位移信号、陀螺摆壳体组件内的热敏电阻引出的浮子的环境温度信号、以及陀螺马达的激磁电压等。文章首先介绍了辨识陀螺加速度计输出残差与各回路状态变量的相关误差模型ARMAX(n,m,p)的辅助变量法与相关估计法,然后进行了仿真实验,最后应用实际测量得到的陀螺加速度计输出与状态变量数据,给出了实验结果。实验结果表明,本文介绍的相关误差模型辨识方法是可行的。This paper discusses the identification method of the correla- tive error model between the output error and the loop state variables in a Pendulous Integrating Gyro Accelerometer(PIGA).The loop state varia- bles include:the tilt angle of the float led out from the servo loop,the ax- ial and radial movements of the float led out from magnetic suspension loops,the environmental temperature of the float led out from the thermal resistor inside the gyro case assemble,and the excitation voltages of the gyro motor.The paper first introduces the instrumental variable method and the correlation estimation method for identifying the correlative error model ARMAX(n,m,p),then the paper addresses the simulation test of the identification method,and finally,with the output data and the state vari- able data acquired in actual PIGA tests,the paper gives out the experimen- tal results of the identification method.The experimental results show that the identification method introduced in the paper is feasible.

关 键 词：加速度计 伺服回路 陀螺摆 误差模型辨识 温度信号 仿真实验 惯性仪表 状态变量 轴向位移 输出误差 

分 类 号：O3[理学—力学]