FRACTIONAL - ORDER FEEDBACK CONTROL OF A DC MOTOR

Ivo Petráš

   This paper deals with the feedback control of a DC motor speed with using the fractional-order controller. The permanent-magnet DC motor is often used in mechatronic and other fields of control theory and therefore its control is very important. The mathematical description of the fractional - order controller and its implementation in the analogue and the discrete domains is presented. An example of simulation and possible realization of the particular case of digital fractional-order PI^λD^δ controller are shown as well. The hardware realization is proposed in digital form with the microprocessor and in analogue form with the fractance circuits.

Keywords: fractional calculus, fractional-order controller, microprocessor, fractance, DC motor

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