关键词: 证据理论, 短周期模态, 时域, 频域, 阻尼比

Abstract: 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.

Key words: evidence theory, short period mode, time domain, frequency domain, damping ratio