Dynamical system of the growth of COVID-19 with controller

Adv Differ Equ. 2021;2021(1):9. doi: 10.1186/s13662-020-03168-w. Epub 2021 Jan 7.


Recently, various studied were presented to describe the population dynamic of covid-19. In this effort, we aim to introduce a different vitalization of the growth by using a controller term. Our method is based on the concept of conformable calculus, which involves this term. We investigate a system of coupled differential equations, which contains the dynamics of the diffusion among infected and asymptomatic characters. Strong control is considered due to the social separation. The result is consequently associated with a macroscopic law for the population. This dynamic system is useful to recognize the behavior of the growth rate of the infection and to confirm if its control is correctly functioning. A unique solution is studied under self-mapping properties. The periodicity of the solution is examined by using integral control and the optimal control is discussed in the sequel.

Keywords: COVID-19; Conformable calculus; Dynamic system; Fractional calculus.