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为了尽可能提高导弹机动能力,提出了“大过载采用BTT(bank-to-turn)控制,小过载采用STT(skid-to-turn)控制”的设计原则,由BTT/STT决策模块和双回路控制器组成混合型BTT/STT大攻角导弹自动驾驶仪。采用攻角控制替代了传统的过载控制,推导出将过载指令转换为对应STT(或BTT)控制方法的攻角、侧滑角和滚转角指令的BTT/STT决策算法,由角度变化的长周期运动和转动角速度变化的短周期运动组成一个双回路控制器。针对Backstepping设计方法适合于级联系统稳定控制的特点,采用直接构造Backstepping法来设计双回路控制器。仿真结果表明:该大攻角自动驾驶仪能够满足近距格斗导弹的技术要求。
In order to improve the maneuvering ability of missiles as much as possible, the design principles of bank over-load control (BTT) and skid-to-turn control (STT) Dual loop controller composed of hybrid BTT / STT high angle of attack missile autopilot. The traditional overload control is replaced by the control of the angle of attack, and the BTT / STT decision algorithm of converting the overload command into the angle of attack, the side slip angle and the roll angle command corresponding to the STT (or BTT) control method is derived. The long- Short-cycle motions with varying angular velocities of movement and rotation make up a double-loop controller. Aiming at the characteristics that Backstepping is suitable for the stable control of cascaded systems, the Backstepping method is used to design dual-loop controller. The simulation results show that the large-angle autopilot can meet the technical requirements of short-range combat missiles.