Nonlinear dynamic modeling method for high-precision subsonic fixed-wing aircraft

• Main Author: WANG YUANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a nonlinear dynamic modeling method for a high-precision subsonic fixed-wing aircraft. The method for acquiring the flight dynamics model comprises the following steps: carrying out structure identification on a fixed-wing aircraft, determining the input and output of a flight dynamics model system, and determining the correlation between each output and the input; designing real test flight subjects with different flight dynamics model values to obtain actual flight data as data support for parameter estimation; carrying out parameter identification, and carrying out parameter estimation based on a flight dynamics model structure identified by the structure and input and output data measured by trial flight according to an input and output relation; inputting the input reserved by the test flight subject for confidence verification into the flight dynamics model, comparing the model output with the group of data output, and analyzing the confidence of the flight dynamics model; and su