Rapid Control Prototyping of a permanent magnet DC motor using non-linear sliding control ZAD and FPIC

This paper shows the behavior of the buck power converter - DC-motor coupled system. The controller is designed using Zero Average Dynamic (ZAD) and Fixed Point Inducting Control (FPIC) techniques. The variable to be controlled is the motor speed. The designs have been tested in a Rapid Control Prototyping (RCP) system based on Digital Signal Processing (DSP) for dSPACE platform. The results show that the speed motor has very good performance when it is controlled with these techniques. The robustness of the system is proven by varying a constant of the controller. Experimental and simulations results agree only when quantization effects are considered in simulations. After this consideration, numerical and experimental bifurcations diagrams agree in stable zone as well as in transition to chaos.