SSB滚转通道改进型主导极点配置控制系统设计

Design of a Roll Channel Control System of SSB Based on Improved Dominant Pole Placement

针对参数大范围变化且具有耦合作用和外部干扰的SSB滚转通道姿态控制问题,给出一种SSB滚转通道改进型主导极点配置控制系统设计方法。首先,通过增加前置滤波器,给出一种改进型主导极点配置PID控制器设计方法,实现精确主导极点配置。其次,采用系数冻结线性化方法,在SSB飞行包线中选取若干具有代表性的特征点构建局部子系统。应用给出的主导极点配置PID控制器设计方法,分别设计局部子前置滤波器和子PID控制器。最后采用一种平滑变增益方法,设计出全局时变前置滤波器和PID控制器。真实SSB模型数值仿真结果表明,所设计的SSB滚转通道系统性能满足预期要求,所给出的方法是有效的。

Considering the attitude control for the roll channel of Small Smart Bombs（SSB） with large parameter changes,coupling interaction and external disturbances,a method for design of the roll channel attitude control system was proposed based on improved dominant pole placement.First,an improved PID controller design method was given,which introducing a pre-filter to guarantee the accurate dominance of the assigned poles based on dominant pole placement.Then several typical characteristic points on the whole flight trajectory of SSB were determined and the corresponding local subsystems were obtained in terms of the frozen-coefficient method.The local sub-pre-filters and sub-PID controllers were determined using the proposed dominant pole placement PID controller design method.Finally,the global time varying pre-filter and PID controller were constructed by a smooth gain-scheduled method.The real SSB model numerical simulation results show that the desired performance requirements of the presented SSB roll channel attitude control system are met and the effectiveness of the proposed method are demonstrated.