多模型方法在飞控系统故障重构控制中的应用

The Application of Multi-Models Method to Flight Control System Failure Reconfiguration

基于多模态控制方法,将多模型选择模态的方法用于飞机发生故障时的重构控制:设计多个不同状态的模型及其控制器,模型采用固定模型和自适应模型,相应控制器按模型匹配方法设计,理想模型依飞行品质要求设计,依据转换标准判断当前飞机状态与哪一个模型最接近并转换到相应控制器上。自适应模型及其控制器是采用基于梯度的参数调节方法设计和实现的。最后以某机为例进行了仿真验证,结果表明该方法是有效的。

Based on multi-modes control method, this paper applies multi-models method identifying different modes to the reconfiguration control when the plane is failed.It designs multi-models and their controllers including fixed ones and adaptive one to identify the plane's modes, and then the model which best approximates the plane is applied in the view of index of identifier performance, switching to the corresponding controller. The adaptive model and control is designed using the gradient-based parameter adaptation scheme. Simulation results are presented in the end and the results show that it's valid.