Fault-Tolerant Static Output Feedback Control for Ship Diesel Engine Injection Systems

This study addresses the modeling and design of a fault-tolerant controller for rail pressure in ship diesel engine injection systems using $H_{\infty}$ static output feedback (SOF) control. Disturbances are assumed to have known frequencies within a finite range. The objective is to maintain the rail pressure at its desired value by adjusting engine speed. A Takagi-Sugeno (T-S) fuzzy model captures the system’s nonlinear dynamics. Based on this model, a fuzzy fault-tolerant SOF controller is designed to ensure robust pressure regulation under actuator faults, formulated via linear matrix inequalities (LMIs). Simulation results demonstrate the effectiveness and robustness of the proposed approach.