**7. Conclusions**

In this paper, an efficient robust approach is proposed for simultaneous sensor and actuator faults reconstruction in the presence of both unknown disturbance and uncertainty. First, an SMO-based method was proposed, and the observer gains were derived utilizing an LMI-based method. Then, considering that the system is subject to both disturbance and uncertainty, a robust reconstruction method is proposed, and incorporating the concept of BRL, the fault reconstruction problem is represented as an LMI problem and solved using the available tools. Furthermore, utilizing a wind turbine system, the performance and robustness of the proposed method were demonstrated. The proposed method can be robust against of disturbances and uncertainties, which is the most important advantage of our work. In contrast, the reconstruction of the faults is under the bounded disturbance, which can be our work's disadvantage. Finally, it is noted that although in many nonlinear systems, the nonlinearity and the effects of linearization error can be captured by the disturbances/uncertainties as considered in this paper, as an ongoing future work, it is quite beneficial to extend the proposed approach for pure nonlinear models in the presence of disturbances/uncertainties.

**Author Contributions:** Conceptualization, A.T. and F.B.; methodology, A.T. and K.H.; software, A.T. and A.B.; validation, F.B. and K.H.; formal analysis, A.T. and F.B.; investigation, K.H. and A.B; resources, A.T. and K.H.; data curation, A.T.; writing—original draft preparation, A.T. and F.B.; writing—review and editing, A.T and K.H.; visualization, A.T. and A.B.; supervision, F.B. and K.H.; project administration, F.B.; funding acquisition, A.B. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Conflicts of Interest:** The authors declare no conflict of interest.
