Chang-Hun Lee/Tae-Hun Kim/Min-Jea Tahk
International Journal of Aeronautical and Space Sicences, vol. 12, no. 3, pp.266-273, 2011

Abstract : This paper deals with the missile autopilot design for agile turn phase in the air-to-air engagement scenarios. To attain a fast response, angle-of-attack (AOA) is adopted for an autopilot command structure. Since a high operational angle-of-attack is generally required during the agile turn phase, the dealing with the aerodynamic uncertainties can be a challenge problem for autopilot design. As a remedy, a new controller design method based on the robust nonlinear control methodology such as time delay control (TDC) is proposed in this paper. Also the nonlinear observer is also proposed to estimate the angle-of –attack under the presence of the model uncertainties. The performance of the proposed controller with variation of the aerodynamic coefficients is investigated through numerical simulations.

Keyword : High Angle-of-attack, Agile Turn, Missile Autopilot, Nonlinear Control, Time Delay Control.