Identification and Stochastic Control of an Aircraft Flying in Turbulence
暂无分享,去创建一个
An adaptive control technique to improve the flying qualities of an aircraft in turbulence was investigated. The approach taken was to obtain maximum likelihood estimates of the unknown coefficients of the aircraft system and then, using these estimates along with the separation principle, to define the stochastic optimal control. The maximum likelihood estimation technique that accounts for the effects of turbulence provided good estimates of the unknown coefficients and of the turbulence. The assessment of the stochastic optimal control based on the maximum likelihood estimates showed that the desired effects were attained for the regulator problem of minimizing pitch angle and the tracking problem of requiring normal acceleration to follow the pilot input.
[1] Hugh L. Dryden,et al. A review of the statistical theory of turbulence. , 1943 .
[2] A. Balakrishnan. Identification and adaptive control: An application to flight control systems , 1972 .
[3] K. W. Iliff. Estimation of characteristics and stochastic control of an aircraft flying in atmospheric turbulence , 1976 .
[4] K. W. Iliff,et al. Determination of stability derivatives from flight data using a Newton-Raphson minimization technique , 1972 .