Comparison of the CRONE-1 and FOPID Controllers for Steam Temperature Control of the Essential Oil Extraction Process

This paper presents a study on temperature control of steam temperature using steam distillation plant for essential oils extraction process. The steam temperature was controlled in a certain range to preserve the quality of essential oils. However, this study is focusing on evaluating the effect of parameter change in the process while maintaining the desired temperature. Two controllers were proposed in this study which are the First generation of CRONE (CRONE-1) and Fractional order PID using FOMCON (FOPID-FOMCON) controllers. Both controllers are robust because they inherit the iso-damping property from the fractional-order terms. Evaluations and comparison of both controllers were done by simulation where the time constant will be varied within 10%.