摘要
本文使用卡尔曼滤波和非线性规划技术求取直升机的气动导数,该方法的特点是: 1.使用频率法使旋翼的高频成份影响减至最小; 2.使用卡尔曼滤波技术使试验数据包含的随机噪声和过程噪声减至最小; 3.最后通过拉格朗日的方法使非线性误差减至最小.
This paper relate a method for extracting the aerodynamic derivatives of a helicopter from flight test data by means of frequency technique, Kalman filtering and Lagrange technique. The method feature can be summaried as follow:
1. The high frequency effect from the rotor are eliminated using the frequency technique.
2. By using the Kalman filtering technique, the radom measurement noise and process noise is minimized.
3. By using the Lagrange technique, nonlinear effects is minimized.
出处
《飞行力学》
CSCD
北大核心
1991年第1期58-64,共7页
Flight Dynamics
