The thesis of the master's student Dhiaa Shaltagh Shanan, specializing in Mechatronics Engineering, was discussed on Thursday, September 5, 2024, at Hall No. 9 in the Control and Systems Engineering Department. The research was entitled: Design and Implementation of different Control Strategies for Respiratory Systems The discussion committee consisted of: 1. Dr. Dhurgham Abdul Rahim Kazim / Chairman. 2. Dr. Alaa Abdel Hadi Jabr / Member. 3. Mina Qais Kazim / Member. 4. Dr. Salim Khalifa Kazim / Member and Supervisor. This study aims to ensure patient safety during the design of ventilators, as these medical devices assist patients in breathing. However, achieving optimal characteristics in opensource designs and conventional control loop mechanical ventilation units can be challenging. This study addresses this challenge by proposing robust controller formulations and comparing and analyzing the results of various control approaches for ventilation units. The study explores the effectiveness of conventional PID control, nonlinear PID control, and sliding mode control (SMC) using two signum functions as triggers for control actions when the sliding surface crosses a specific threshold. Each approach is evaluated and compared, considering the specific design of the ventilator and the application requirements. The fractional order SMC controller using the saturation method showed the highest improvement rate of 98%, achieving smoother control signals without overshoot (0.0165 mbar), a quick settling time (0.142 seconds), and no disturbances. By examining and analyzing the outcomes, this research aims to provide insights into the most suitable control approach for ensuring the safe and efficient operation of ventilators. The discussion was attended by Deputy Head of the Department for Scientific Affairs and Graduate Studies Dr. Abbas Hussein Issa. At the end of the discussion, the researcher was awarded a master’s degree with a grade of “excellent”, wishing the student Diaa Shaltagh Shanan continued success.