Modified Relay Tuning PI with Error Switching: A Case Study on Steam Temperature Regulation

摘要

This study evaluates the performance between reaction curve Ziegler-Nichols tuning rules applied to FOPDT model and the open-loop relay feedback tuning method based on ultimate gain and period. Error and control signal switching were equipped to enhance the output response over a limited steam temperature response. The control performance was evaluated experimentally on a steam distillation process regulation. The proposed technique employing relay tuning together with error switching had produced an astounding closed-loop response even for a non-linear steam temperature control