摘要
针对BTT导弹滚转角速度较大,俯仰和偏航通道具有强耦合、非线性的飞行控制特点,基于合理假设,通过线性化策略解耦得到相互独立的三通道弹体动力学模型,采用三通道独立设计的思想完成导弹三通道驾驶仪的设计。在此基础上,得到了三通道驾驶仪的闭环阶跃响应、开环系统幅相裕度以及导弹飞行参量的变化曲线,讨论了三通道控制系统响应快速性及频带匹配关系。根据仿真结果,得到了BTT导弹在满足滚转通道稳定性的前提下,尽量提高其频带,保持俯仰和偏航通道响应速度的一致性有利于消除通道间的耦合,增强BTT导弹的协调转弯能力。
Based on rational assumptions,independent missile dynamic model is mutually established,which eliminated the coupling through linearization strategy,and the design of missile＇s three channel autopilots is completed. On the basis of that,three channel autopilots＇ closed-loop step response,the amplitude and phase domain of open-loop system is obtained and three channel autopilots＇ frequency matching relationship and the effect on the performance of control systems are discussed. Finally,the simulation results show that BTT autopilots can improve the rolling channel band as long as its stability can meet the requirements,which is useful for eliminating the coupling effects among three channels and enhancing missile＇s ability of coordinate turn that keeps the fast consistency of pitch and yaw channels as soon as possibile.
出处
《航天控制》
CSCD
北大核心
2017年第5期30-36,共7页
Aerospace Control
