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Nonlinear autopilot for high maneuverability of bank-to-turn missiles

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3 Author(s)
Sang-Yong Lee ; i-Networking Lab., Samsung Adv. Inst. of Technol., Kyungki, South Korea ; Ju-Il Lee ; In-Joong Ha

This paper presents a novel approach to autopilot design for highly maneuvering bank-to-turn (BTT) missiles. In the design and performance analysis of the proposed nonlinear autopilot, all nonlinearities of missile dynamics including the coupling between roll, yaw, and pitch channels as well as the asymmetric structure of missile body are taken into full account. It is shown that through a kind of feedback linearization technique along with a singular perturbation-like technique, the input/output (I/O) dynamic characteristics of pitch, yaw, and roll channels are made linear, decoupled, and independent of flight conditions such as air density and missile velocity. In particular, the proposed autopilot controllers can provide excellent set-point tracking performance for roll and pitch channels while keeping the side-slip angle negligible. The generality and practicality of our approach are demonstrated through mathematical analysis and various simulation results using an ILAAT missile

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:37 ,  Issue: 4 )