IMC based Fractional-order Controller for a Level Process

Process modeling and control is one of the most important aspects in any process plant operation with respect to its productivity and product quality. Though proportional-integral-derivative (PID) controllers are widely being exploited in several process industries, however, recently reported control strategies are also being exercised with their respective advantages and suitability for close-loop control applications. Internal model control (IMC) techniques have been widely employed for chemical processes as an acceptable control methodology over prolong period due to their simple structure and hassle free tuning. Recently, the mathematical phenomenon of fractional calculus is being utilized in controller designing. Here, the reported work focuses on designing a fractional order filter based IMC controller for a level control process and its performance evaluation is made in comparison with conventional PID and IMC controllers.