QFT在导弹俯仰通道控制中的应用

Application of QFT in Missile's Pose Control

定量反馈理论(QFT)是参数不确定性系统鲁棒控制比较成功的设计方法。导弹发射过程中,具有强不确定性,且弹体参数随时间连续变化。文中采用QFT控制律设计方法用于导弹俯仰通道鲁棒控制律的设计。仿真表明,所设计控制律满足导弹6组特征点的鲁棒稳定性指标和跟踪性能,且控制舵偏比基于PID控制的偏量减小40%,俯仰角调节时间3.29s也优于原PID控制所需调节时间4.53s。

Quantitative Feedback Theory(QFT),is a frequencydomainbased robust control design approach that was developed in the early 1970s and has received considerable attention over the past two decades. Take account of both the scope of the missile plant' s uncertainty and performance requirements, a robust controller was designed through QFT in this paper. Design results and simulational tests reveal the bright potential applications of QFT approach in the robust pose control system design of missiles.