The paper proposes a fault-tolerant tracking control scheme based on a robust observer for a descriptor system. Thus, it is assumed that the described system can be simultaneously occupied by an unknown input disturbance, along with an actuator and sensor faults. Additionally, it is natural to assume that the unknown input disturbance cannot be estimated, which makes the control process more difficult. Moreover, the proposed descriptor system is also occupied by external disturbances. Thus, the robust stability of the proposed control and estimation scheme was guaranteed by using $H_{\infty }$ performance. Consequently, the DC servo-motor laboratory system was used to confirm the correctness and effectiveness of the proposed fault-tolerant tracking control scheme.

中文翻译：

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未知输入扰动下描述符系统的容错跟踪控制

本文针对描述符系统提出了一种基于鲁棒观测器的容错跟踪控制方案。因此，假设所描述的系统可能同时被未知输入干扰以及执行器和传感器故障所占据。此外，很自然地假设未知输入扰动无法估计，这使得控制过程更加困难。此外，所提出的描述符系统也被外部干扰所占据。因此，通过使用保证所提出的控制和估计方案的鲁棒稳定性$H_{\infty }$表现。因此，使用直流伺服电机实验室系统来确认所提出的容错跟踪控制方案的正确性和有效性。