Flight Control for a Class of 155 mm Spin-stabilized Projectiles with Course Correction Fuse (CCF)

摘要

This paper presents a study on trajectory correction autopilot configuration for a class of fin-guided spin-stabilized ammunitions. The proposed algorithm is heavily based on the system's linear parameter-varying model valid inside its entire flight envelope. This model offers an accurate approximation of the airframe nonlinear dynamics and is also used for stability analysis. A decentralized optimal linear quadratic integral servo controller strategy is proposed for the autopilot that offers accurate tracking and disturbance rejection for both the longitudinal/lateral projectile dynamics. The gains of the controller are smoothly scheduled to provide full flight envelope coverage and the tracking qualities of the overall configuration are tested using pulse-type reference signals. Finally, nonlinear simulations of the overall control configuration are given in order to illustrate the effectiveness of the proposed autopilot.