L-1 Adaptive Dynamic Inversion Missile Autopilot with PI Structure and Adaptive Sampling

Tiwari, SN and Dwivedi, PN and Bhattacharya, A and Padhi, R (2016) L-1 Adaptive Dynamic Inversion Missile Autopilot with PI Structure and Adaptive Sampling. In: 2nd Indian Control Conference (ICC), JAN 04-06, 2016, Indian Inst Technol, Hyderabad, INDIA, pp. 54-59.

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Abstract

An L-1 adaptive controller with piecewise continuous (PC) adaptation law augmenting a nonlinear dynamic inversion (NDI) autopilot has been applied to a highly agile, tail-controlled missile. Here proportional integral (PI) structure has been used in inner loop for better tracking and robustness. Adaptive sampling has also been introduced for less computational load. Firstly a two time scale separated NDI autopilot is designed to control the pitch and yaw accelerations in the body-fixed frame while maintaining a desired roll angle. The baseline NDI autopilot is augmented with proposed L-1 Adaptive autopilot using PI structure and adaptive sampling to overcome the potential performance degradation due to modeling uncertainties. The advantages of proposed autopilot are demonstrated via simulations of a high-fidelity six-DOF missile model, in which worst case uncertainties are considered.

Item Type:	Conference Proceedings
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	22 Oct 2016 09:31
Last Modified:	22 Oct 2016 09:31
URI:	http://eprints.iisc.ac.in/id/eprint/55041

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