某型飞行模拟器纵向短周期模态的验证与研究

Verification and Research on Longitudinal Short-period Mode of Flight Simulator

针对某型飞行模拟器,首先提取该型模拟器短周期模态6个相关参数的时间历程曲线,其次在时域内运用平均标准化距离检验方法和灰色关联分析方法对飞行模拟仿真数据和飞参数据进行一致性检验,在频域内运用经典谱估计的方法完成飞行模拟仿真数据和飞参数据的量化评估,并改进证据理论,从而合成时域和频域的一致性检验结果。最后进一步对短周期模态的阻尼比和自振频率进行验证研究,验证了该型飞行模拟器纵向短周期模态逼真度较好。

For a certain type of flight simulator, this paper extracts the time course curve of the related six parameters of the short cycle type modal of the simulator. In time domain, using the average standardized distance test method and gray correlation analysis method, the consistency checking of parameters of flight simulation data and real data is done. In frequency domain, using the classic spectrum estimation method, the quantitative assessment is completed for the flight simulation data and flight parameters. So the evidence theory is improved to synthesize consistency check results of time domain and frequency domain. At last, the damping ratio and the self-oscillation frequency of the short-period mode are verified, the results show that the fidelity of the longitudinal short-period model of the flight simulator is good.