Optimal Tuning of Fractional Order PID Controller for DC Motor Speed Control Using Particle Swarm Optimization
Ankit Rastogi1, Pratibha Tiwari2

1Ankit Rastogi, Department of Electrical Engineering, Sam Higginbottom Institute of Agriculture ,Technology & Sciences, Allahabad, India.
2Pratibha Tiwari, Department of Electrical Engineering, Sam Higginbottom Institute of Agriculture, Technology & Sciences, Allahabad, India.
Manuscript received on April 04, 2013. | Revised Manuscript received on April 28, 2013. | Manuscript published on May 05, 2013. | PP: 150-157 | Volume-3, Issue-2, May 2013. | Retrieval Number: B1474053213/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: PID controller is the most widely used controller in industry for control applications due to its simple structure and easy parameter adjusting. But increase in complexity of control systems has introduced many modified PID controllers. The recent advancement in fractional order calculus has introduced fractional order PID controller and it has recieved a great attention for researchers. Fractional order PID (FOPID) controller is an advancement of conventional PID controller in which the derivative and integral order are fractional rather than integer. Apart from the usual tuning parameters of PID, it has two more parameters λ (integer order) and μ (derivative order) which are in fractions. This increases the flexiblity and robustness of the system and gives a better performance than classical PID controller. In this research paper, FOPID has been applied to DC motor for speed control and optimal values of λ and μ has been obtained using particle swarm optimization technique.
Keywords: DC motor, Fractional order PID controller, PID controller, Particle swarm optimization.