基于多模型的飞控系统自适应重构技术研究

针对飞控系统执行器故障引起参数大范围跳变的问题,提出了一种基于多模型的自适应重构控制方法。建立了执行器故障参数模型,根据故障的特征模型设计一系列并行的辨识模型,采用固定模型与自适应模型相结合的方式,依据转换标准选择与当前飞机状态最匹配的辨识模型所对应的控制器。通过对某型飞机侧向控制系统进行仿真,表明在执行器严重受损的情况下,飞机仍能保持良好的性能。

Multiple Model-Based Adaptive Reconfiguration Control for Flight Control System

The multiple model-based adaptive reconfiguration control is presented to deal with the problem caused by the actuator failures in the flight control system.Firstly,the actuator failure models are constructed;secondly,a series of parallel identification models are designed according to the characteristics of failures.The controller which is closest to the aircraft is selected according to an index.Simulation results show that,our special design strategy does ensure that the aircraft in our example have good performance in the presence of control surface failures.