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Stochastic robust flight control under windshear by reduced-order anisotropic controller

Tchaikovsky M. M.

Archives of Control Sciences

2009

Vol. 19, no. 4

385-422

This paper is devoted to design of stochastic robust anisotropy-based reduced-order controller for longitudinal flight control in landing approach under the influence of both deterministic and stochastic external disturbances. The control aims at disturbance attenuation and stabilizing aircraft longitudinal motion along some desired glidepath. The controller design procedure consists of two steps. At first, the full-order optimal controller is obtained as the solution to normalized anisotropy-based stochastic Η∞ optimization problem. Then, the optimal controller is reduced via a truncation-like technique. The results of comparison of reduced-order anisotropic controller with LQG and Η∞ ones on the base of closed-loop system simulation are presented.