传感器安装误差及其对飞行器气动参数辨识的影响

Effect of errors in the installation of sensors on the aerodynamic parameter identification

基于飞行器线性化纵横向解耦数学模型，系统地分析了加速度仪表、流向传感器和角速度陀螺安装位置误差和轴不平行度误差对飞行器气动参数辩识的影响。分析表明，必须将传感器安装误差限制在一定的范围内，否则得不到今人满意的参数估值。分析结果对指导飞行试验设计及非线性模型参数估计具有重要意义。

Based on the linearimed decoupling mathematical model of lateral and longitudinal motion, analyzes the effect of errors in the installation of accelerometers, flow sensors and rate gyros on the aerodynamic parameter estimation.Analysis indicates that reasonble results can not be obtained unless limiting the errors in the instaillation of sensors to a certain region , and ever minor errors in the installation of rate gyros will effect the accuracy of estimates seriously . This paper's results have an important meaning on flight test design and aerodynamic coefficients estimation.