Comparative Assessment of PID Controller Strategies for Nonlinear Systems with Time-Varying Parameters

This paper presents advanced PID control methods for industrial processes with variable parameters and dominant delays. Evaluating nonlinear PID, two-degree-of-freedom PID, fractional-order PID, adaptive PID control, and nonlinear PID adaptive control, these methods demonstrate improved performance metrics over traditional PID approaches. With superior tracking accuracy and reduced control effort, they minimize overshoots and settling times amidst reference changes and disturbances, suggesting their promising potential for enhanced process control in similar industrial settings.