Analisis Kinerja Kendali Fuzzy PID pada Sistem Pengendalian Level Deaerator Menggunakan Matlab

Abstract

A deaerator is a boiler component responsible for removing oxygen and other gases from the water used to generate steam. Steam is used to heat the water and strip away dissolved gases—such as oxygen (O2) and carbon dioxide (CO2)—that could otherwise cause corrosion within the boiler system. Deaerator control affects both water heating and liquid levels; therefore, it is necessary to develop a simulation system for deaerator level control using MATLAB. The process involves establishing a level setpoint and modeling the deaerator, followed by determining the PID parameters (Kp, Ki, and Kd) and designing the fuzzy controller. Subsequently, simulations are conducted in MATLAB to evaluate system responses, including rise time, settling time, overshoot, and steady-state error. Based on the test results, it can be concluded that both Fuzzy-PID and conventional fuzzy controllers are capable of tracking setpoint changes and maintaining the level at a steady state with near-zero steady-state error. The Fuzzy-PID controller demonstrates a faster response to setpoint changes compared to the conventional fuzzy controller, although it exhibits slightly higher overshoot and undershoot during these transitions. In contrast, the conventional fuzzy controller provides a smoother response with smaller transient deviations but requires more time to reach a steady state.