A novel approach to design and analyze fractional order PID controller for speed control of brushless DC motor

Abstract

<p class="abstract">In industries Brushless DC(BLDC) motors with conventional PID controllers which are based on linear control theory are widely used. BLDC motors often require precise speed control for various applications like robotics, electric vehicles and industrial automation etc.. The recent advancement in Fractional order calculus in control theory is also seeking attention of researchers because of certain advantages over conventional controllers. In comparison with conventional controlling of Brushless DC motor, Fractional Order PID (FOPID) controllers outperforms in terms of better dealing with the variable time delays, varying plant parameters, nonlinearity and considerable plant noise. This research paper compares conventional and fractional order control and offers a novel method for designing a fractional order PID controller for BLDC motors. Overall, it is noticed that the novelty of FOPID lies in its ability to leverage fractional-order dynamics to achieve improved control performance, enhanced adaptability, and better robustness as compared to traditional Ziegler Nichols method based PID controllers. The proposed models of Fractional Order PID-based control of Brushless DC motors are designed and validated in MATLAB with the help of FOMCON toolbox. <p class="abstract"> <p class="abstract"><strong>Received: 23 June 2024 </strong> <p class="abstract"><strong>Accepted: 11 September 2024 </strong> <p class="abstract"><strong>Published: 24 September 2024</strong>