ZEGHLACHE Ayyoub2024-03-062024-03-062024http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/42545This thesis focuses on designing a Fault Tolerant Control (FTC) approach for motor systems. Electrical motors, widely used in industrial applications, are prone to faults that compromise efficiency and reliability. The study explores FTC principles and analyzes faults in motors, particularly addressing challenges in Permanent Magnet Synchronous Motors (PMSMs). It proposes a novel FTC strategy, combining sliding mode control (SMC) with nonlinear observers such as fuzzy extended state observer (FESO) and non linear extended state observer (NESO). The aim is to ensure robust PMSM operation amidst disturbances and faults, as confirmed by simulation results demonstrating en hanced stability and control performanceFault-Tolerant Control, Permanent Magnet Synchronous Motors, Sliding Mode Control, Fuzzy Extended State Observer, Nonlinear Extended State ObserverThesis