6. Feedback control of crowds of pedestrians at macro-scale

The evacuation of crowds of pedestrians is considered at macro-scale in this chapter. Based on the inspiration of diffusion processes and anomalous diffusion processes of fluids, distributed controllers have been constructed within the framework of calculus of fractional order. Compared to the previous work conducted within the framework of calculus of integer order, much more freedom has been provided in control of crowds at macro-scale using the controllers obtained. Simulation results in twodimensional space are also presented to illustrate the effectiveness of the fractional and distributed controllers proposed in this chapter.