BTT导弹俯仰-偏航通道变结构控制律设计

提出了一种新的时变模型参考变结构控制方案，设计了某型ＢＴＴ导弹俯仰偏航耦合通道自动驾驶仪控制律。该方案能有效地解决ＢＴＴ导弹通道间强烈的耦合现象，适应气动参数大范围变化，改善自动驾驶仪的动态性能和稳定性。

On Design of Variable Structure Control Law for PitchYaw Channels of BTT Missiles

In the paper, a new control scheme of timevarying model reference variable structure control systems is proposed, and applied to designing the pitchyaw coupling channel autopilots of BanktoTurn (BTT) missiles. The feature of this scheme is that a timevarying switching function and a timevarying reference model are employed to improve control effectiveness and to make the autopilot better in the following three respects: (1) the coupling problem among the channels of BTT missiles is solved; (2) the largerange variation of missile parameters is adapted; and (3) the dynamic properties and the stability of the whole autopilot are improved. Simulation results are also presented in Figs.1 and 2, and they show that the autopilot designed by the timevarying model reference variable structure control scheme possesses good instructionfollowing capability and strong robustness, and consequently the BTT missile improves its maneuver performance greatly.