航空学报 > 1992, Vol. 13 Issue (7): 398-402

估计理论在飞行数据相容性检验中的应用

张友民, 王培德, 张洪才   

  1. 西北工业大学自动控制系 西安 710072
  • 收稿日期:1990-07-17 修回日期:1991-12-23 出版日期:1992-07-25 发布日期:1992-07-25

THE APPLICATION OF ESTIMATION THEORY IN FLIGHT DATA COMPATIBILITY CHECK

Zhang You-min, Wang Pei-de, Zhang Hong-cai   

  1. Department of Aulo-control, Northwestern Polytechnical University, Xi'an, 710072
  • Received:1990-07-17 Revised:1991-12-23 Online:1992-07-25 Published:1992-07-25

摘要: 飞行数据相容性检验在飞行试验数据分析中是很重要的。由于飞行试验测量数据中存在着各种过程噪声(如大气紊流)和测量噪声(如尺度因子偏差、常值系统偏差等),这些误差将会导致飞行数据各通道之间不相容。利用估计理论进行飞行状态估计,同时估计出未知的尺度因子,系统偏差,即进行飞行轨迹重构被认为是飞行数据相容性(一致性)检验的强有力的工具。本文利用推广卡尔曼滤波和信息平方根滤波及平滑进行高速飞机飞行数据的相容性检验,提出了飞机纵向运动和全面运动的新模型,通过仿真和实际计算得出满意的结果。

关键词: 推广卡尔曼滤波, 信息平方根滤波及平滑, 飞行数据相容性检验, 飞行试验

Abstract: The extended Kalman Filter and fixed-interval Smoother (EKF/S) and Square-Root Information Filter and Smoother (SRIF/S) for flight data compatibility check of two kinds of supersonic aircraft are presented. In order to get high accuracy and computation efficiency, the modified SRIF/S is proposed by exploiting some features of model. The results of simulation and actural flight data computation show that these two methods can give satisfactory result and the modified SRIF/S not only imprives the numerical stability, but also reduces significantly the computation and storage requirement and is more efficient than EKF/S.

Key words: extended Kalman filter, square-root information filter and smoother, flight data compatibility check, flight test