A Singular Perturbation-like Method to Compensate the Effect of Fin Actuator Dynamics in Nonlinear Missile Control

비선형 미사일 제어에서의 핀 구동기 동역학 영향을 보상하는 새로운 유사특이섭동기법

The recently developed autopilot controller can make the input-output (I/O) dynamic characteristics of the nonlinear missile dynamics linear and independent of flight conditions. However, significant fin actuator dynamics can degenerate the I/O dynamic performance of the overall system. In this paper, we propose a singular perturbation-like method to compensate the effect of significant fin actuator dynamics in nonlinear missile control. The proposed compensation method does not require the time derivatives of fin angles but can maintain the linear I/O dynamic characteristics provided by the recently developed autopilot controller.