中文摘要：

基于自适应故障诊断观测器提出一种新的自适应故障估计设计方法。针对传统自适应故障估计设计方法难以满足故障估计性能的要求以及存在严格的等式约束增加了观测器设计的难度等问题，提出新的自适应故障估计设计方法，该方法不仅能够显著地提升故障估计的性能，而且通过运用不等式变化有效地避免了严格的等式约束，基于Lyapunov稳定性理论以矩阵不等式的形式给出了误差动态系统稳定的新的充分条件。最后，对某型飞控系统的仿真实验验证了所提方法的有效性。

英文摘要：

This article proposes a novel adaptive fault estimation design method based on an adaptive fault diagnosis observer. The conventional adaptive fault estimation design method is faced with problems that the performance of fault estimation does not meet performance requirements and that a strict equation constraint adds to design difficulties. The adaptive fault estimation design method proposed in this article not only enhances the performance of fault estimation evidently, but also avoids the strict equation constraint by using inequality transform. Based on Lyapunov stability theory, new sufficient conditions for error dynamic systems are given to guarantee the stability of error dynamics in terms of matrix inequalities. Finally, simulation results of a certain type of flight control systems are presented to show the validity of the proposed method.