مرکز منطقه ای اطلاع رسانی علوم و فناوری Journal of Information Systems and Telecommunication (JIST) 2322-1437 13 52 2026 2 3 Adaptive PID and Fuzzy Logic Control for Yaw Attitude in LEO Satellites Adaptive PID and Fuzzy Logic Control for Yaw Attitude in LEO Satellites 266 277 10.66224/jist.48337.13.52.266 en Stanley E Ajagba University of Nigeria, Nsukka. Udora N Nwawelu University of Nigeria, Nsukka. Bonaventure O Ekengwu Nnaemeka C Asiegbu University of Nigeria, Nsukka. Dumtochukwu O Oyeka University of Nigeria, Nsukka. Maryrose M Ogbuka University of Nigeria, Nsukka. 2024 10 21 <p class="Sammary" style="page-break-after: auto;">The significance of an effective satellite attitude control system lies in its ability to ensure that data acquisition by a Low Earth Orbit (LEO) satellite is of good quality and reliable. In this paper, the design of an adaptive Proportional Integral Derivative (PID) controller and its modified form (PIDD), which includes an additional derivative component for a microsatellite y-axis attitude control system (ACS), is presented. Additionally, a Fuzzy Logic Controller (FLC) and its enhanced version, called Adjustable Gain Enhanced FLC (AGE-FLC), were designed. Models of the amplifier, actuator, and satellite structure were developed to derive the transfer function of the LEO satellite's yaw-axis attitude dynamics. Model Reference Adaptive Control (MRAC) based Proportional Integral Derivative (PID), referred to as MRAC-PID and its modified form, MRAC-PIDD, were designed. The models of the various control systems were developed in MATLAB and were used to simulate the designed control systems. The simulation results and analysis revealed that the MRAC-PID controller offered the most efficient performance in terms of fast response and transient time, with a rise time of 1.74 seconds and a settling time of 6.19 seconds. Also, the MRAC-PIDD and AGE-FLC exhibited no overshoot, indicating efficient performance in terms of stability and smoothness in torque control. All proposed control systems for the LEO satellite yaw-axis ACS met the performance criteria, except for the PID and FLC controllers, which yielded overshoots of 12% and 21.97%, respectively. Generally, it suffices to say that the introduction of the designed adaptive PID/PIDD controllers and the AGE-FLC enhanced the system performance.</p> http://jist.ir/en/Article/Download/48337