Bode’s Ideal Cut-Off Based Virtual Reference Feedback Tuning Controller Design

In this paper, the Bode’s ideal cut off (BICO) low pass filter of fractional order $\alpha$ was adopted as a reference model in the data-driven virtual reference feedback tuning method (VRFT). Simulation results are presented to assess the performance of the BICO based VRFT designed controllers, and a comparison with other existing data based design methods and model-based design methods is performed. Furthermore, a BICO based fractional order PID controller is designed and its performance and robustness to plant gain variations are analyzed.