Integrated Autopilot Guidance Based on Zero-Effort-Miss Formulation for Tail-Controlled Missiles

Abstract

This paper presents a control structure integrating guidance and control loops for tail-controlled missile systems. Motivated by the fact that common tail-controlled missiles involve non-minimum phase dynamics, the proposed controller is designed to prevent the internal dynamics from diverging, as well as achieving homing against the intended target. To minimize the miss distance at the end of homing, we derive a formulation of a zero-effort-miss using engagement kinematics that contain the rotating dynamics of the missile, which is different from existing approaches. Subsequently, to nullify the zero-effort-miss, a nonlinear controller is designed based on the Lyapunov stability theory. Since the derived controller has a similar structure to the conventional three-loop topology that has been utilized for various tail-controlled flight systems, it is expected that the proposed method can be applied to the actual system from a practical point of view. Numerical simulation results also show that the proposed method achieves target interception while possessing stable internal dynamics.

Integrated Guidance and Control for Collision Course Stabilization of Dual-Controlled Interceptors

“…Proposition 2. The sliding mode control input, presented in (22), allows the sliding mode dynamics in (19) to converge to zero in a finite time.…”

“…In [18], output tracking continuoustime predictive control was employed to design an integrated autopilot guidance loop. In [19], an integrated guidance and control loop structure was developed for tail-controlled interceptors. The structure is similar to the conventional three-loop configuration used for various tail-controlled flight systems.…”