A comprehensive adaptive compensation control strategy based on feedback linearization design is proposed for multivariable nonlinear systems with uncertain actuator fault and unknown mismatched disturbances. Firstly, the linear dynamic system is obtained through nonlinear feedback linearization, and the dynamic model of the mismatched disturbances as well as its relevance to the nonlinear system is given. The effect of disturbances on the system output is suppressed with the basic controller of the linearized system. Then, a direct adaptive controller is developed for the multiple uncertain actuator faults. Finally, an integrated algorithm based on adaptive weighted fusion could provide an effective compensation for the effect of multiple uncertain faults and mismatched disturbances. Thus, the stability and asymptotic tracking performance of the closed-loop system are ensured. The feasibility and performance of the proposed control strategy are validated by the numerical simulation results.

中文翻译：

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飞机控制应用的非线性系统自适应故障补偿与干扰抑制设计

针对具有不确定执行器故障和未知失配干扰的多变量非线性系统，提出了一种基于反馈线性化设计的综合自适应补偿控制策略。首先，通过非线性反馈线性化得到线性动力学系统，给出了失配扰动的动力学模型及其与非线性系统的相关性。线性化系统的基本控制器可以抑制干扰对系统输出的影响。然后，针对多个不确定的执行器故障开发了直接自适应控制器。最后，基于自适应加权融合的集成算法可以为多种不确定故障和失配干扰的影响提供有效的补偿。从而，确保了闭环系统的稳定性和渐近跟踪性能。数值仿真结果验证了所提出控制策略的可行性和性能。