BTT导弹滚动通道变结构最终滑态控制系统设计

On Design of Variable Structure Terminal Sliding Mode Control System for Roll Channel of BTT Missile

提出了一种模型参考变结构最终滑态控制方案，应用该方案设计了ＢＴＴ导弹滚动通道自动驾驶仪．理论分析表明，该方案确保了系统状态按照规定的动态特性直接进入最终滑态，有效地改善了变结构系统的动态性能，并且对于参数摄动具有较强的鲁棒性．数字仿真结果表明，应用该方案设计的ＢＴＴ导弹滚动通道自动驾驶仪具有良好的指令跟踪性能和较强的鲁棒性．

In order to meet China's defense needs, we design a variable structure terminal sliding mode control system of roll channel autopilot that docs satisfy the stringent requirementS imposed on a certain type of Chinese BTT (bank-to-turn) tactical missile.The outstanding feature of our design is that sliding mode can be digitly entered into, i.e., entered into with only relatively low chattering. This feature can be castly seen from Fial. 1～ 6. Figs. 1～ 6 are based on numerical simulation.Numerical simulation is based on eqs. (5), (11), and (14), which are control laws for terminal sliding mode. Making proper use of these equations, we ensure meeting the following design requirements on the roll channel control System:(1) It should enter into terminal sliding mode with only relatively low chattering; actually the final design satisfics castly this requirement.(2) It should possess good instruction-following capability.(3) It should be robust against perturbations of various parameters.