利用大迎角试飞数据辨识飞机气动导数

基于用局部线化代替非线性概念．探索了利用大迎角飞行试验数据辨识飞机空气动力参数问题。在准定常假设条件下，提出了迎角分割算法和时间分割算法，针对歼教七飞机的失速飞行试验数据，用最小二乘回归方法和最大似然法验证了上述大迎角参数辨识的思想，取得了较好的结果，为进一步开展大迎角参数辨识技术的工程应用奠定了基础。

Aircraft Aerodynamic Parameter Identification by Using HAOA Flight Test Data

Based on the idea of using local linear to replace full range unlinear, the aerodynamic parameters of the aircraft was identified by using the HAOA flight test dada. In terms of the quasi-steady condition hypothesis, AOA partition algorithm and time partition algorithm was built. By processing the stall flight test data of JJ7 aircraft in detail, the above-mentioned idea was validated with Least Square methods and Maximum Likelihood methods. The result was proved to be proper. This research may be considered as a good foundation for the engineering application study of HAOA parameter identification.