Controller Design Methods for Driving Systems Based on Extensions of Symmetrical Optimum Method with DC and BLDC Motor Applications

The paper gives design methods dedicated to speed control of Direct Current (DC) and Brushless Direct Current (BLDC) motors in the framework of servo systems. Two design approaches are offered for position and speed control of servo systems with inner current control loops. The PI and PID controllers in these approaches are tuned on the basis the Extended Symmetrical Optimum method and of the double parameterization of Symmetrical Optimum method. Cost-effective features are ensured by simple controller designs and easy implementations, and they are illustrated by means of a case study that includes simulation results. A two-degree-of-freedom interpretation is given. A BLDC motor application applied to mechatronic systems is presented.