可重构飞行控制律设计的混合特征结构配置方法研究

Reconfigured Control Law Design Based on Mixed Eigenstructure Assignment Approach

将特征结构配置与模糊控制理论相结合对飞机侧向飞行重构控制律进行设计。首先介绍了重构控制律中特征结构配置的原理和反馈增益矩阵的算法实现,在此基础上结合带优化修正参数的无量化模糊控制方法对闭环系统进行鲁棒控制器设计。该控制策略以特征结构配置作为故障后系统的内环控制器,模糊控制器作为外环控制器,使系统获得较好的动态性能和较强的鲁棒性。仿真结果表明系统有效抑制了内部参数摄动对飞行任务的不良影响。

A design technique of robust controllers using reconfignrable eigenstructure assignment and fuzzy control for fault tolerant FCS is presented. Using reconfigurable eigenstructure assignment method, a new feed- back gain matrix ks to ensure the eigenvalues and corresponding eigenvectors of the reconfigured closed-loop system to recover those of the original system to a maximum extent is designed. So the reconfigured system can satisfy specifications in terms of dynamic response, while fuzzy control ensures good robust performance of reconfigured closed-loop system. The simulation results show that the designed system has good dynamic quali- ties and the ability of parameter disturbance rejection.