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针对大型民机操纵面故障问题,提出模型跟随直接自适应重构控制算法.该算法克服了离线设计控制律的局限及间接自适应控制的不足,当操纵面发生故障时,能够在线及时更新飞行重构控制律,保证良好的飞行品质.考虑到大型民机飞行模态以线性控制为主,首先建立了状态空间下的被控对象模型、参考模型及故障模型,在此基础上设计了重构控制器,然后运用李亚普诺夫稳定性理论导出了控制器中增益阵的更新律,并证明了所设计的闭环重构系统是渐近稳定的.最后,考虑B747-100/200飞机在巡航阶段的横侧向运动,进行方向舵故障模式下的控制重构仿真,结果表明,模型跟随直接自适应控制对操纵面故障有很好的自适应调节能力,且具有良好的飞行品质.
In order to solve the problem of control plane faults of large civil aircraft, a model-following direct adaptive reconfiguration control algorithm is proposed, which overcomes the limitation of offline design control law and the deficiencies of indirect adaptive control. When the control plane fails, Reconstruction of control law to ensure good flight quality.Considering the large-scale civil aircraft flight mode to linear control mainly established the state space under the controlled object model, the reference model and the fault model, on this basis, the design of the heavy And then using Lyapunov stability theory to derive the update law of the gain matrix in the controller and prove that the designed closed-loop reconfiguration system is asymptotically stable.Finally, considering the B747-100 / 200 aircraft cruising The results show that the model following the direct adaptive control has a good adaptive ability to control surface faults and has good flight quality.