Super-twisting algorithm devoted to control the greenhouse system

A Super-Twisting Algorithm (STA) is proposed for the tracking control of a greenhouse system. This proposed technique, ensure that the occurrence of the sliding motion in finite time and the trajectory of the tracking error converge to the equilibrium point. Furthermore, High Sliding Mode is in the but to approximate the unknown nonlinear functions of the system model and moreover to approximate the switching control term of the sliding control to resolve the chattering problem. The convergence and stability of the proposed control schema are proved using Lyapunov's method. Finally, many simulation results for the greenhouse are given to illustrate the good tracking performances.