Coupled 6DoF nonlinear model of tactical missiles: an optimal autopilot design

Mikutel, Tadeusz, Stępień, Sławomir and Sykulski, Jan (2025) Coupled 6DoF nonlinear model of tactical missiles: an optimal autopilot design. Archives of Control Sciences, 35 (3), 441-454. (doi:10.24425/acs.2025.156306).

Record type: Article

Abstract

A fully coupled six degrees of freedom modelling of a tactical missile and an optimal control theory-based method are presented aiming at minimizing the autopilot control effort and improving the accuracy of reaching the target by a missile guidance system. A state-dependent Riccati equation-based regulator of controls deflection with an infinite time horizon is employed and its appropriateness for this type of a problem clarified. With the purpose of improving the precision of the autopilot system using a classic three-loop approach, a nonlinear state-dependent optimal feedback compensation with anti-windup system has been used incorporating measurements from an accelerometer and gyro rates. The simulated results for the missile model and optimal autopilot structure are compared with classic three-loop autopilot approach in a guidance system.

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