Nonlinear and chaos control of a micro-electro-mechanical system by using second-order fast terminal sliding mode control

In this paper, a novel second-order fast terminal sliding mode control (SFTSMC) scheme is proposed to suppress the chaotic motion of a micro-mechanical resonator with system uncertainty and external disturbance. To obtain a better disturbance rejection property, a fuzzy logic system is introduced to estimate the upper boundary of the sum of system uncertainty and external disturbance. Moreover, we employ the finite-time technique to obtain the properties of fast response and high precision. Finally, numerical simulations demonstrate the effectiveness of the proposed control scheme.

► A second-order terminal sliding mode strategy is proposed to suppress the chaotic motion of a micro-mechanical resonator.
► A fuzzy logic system is introduced to estimate the upper boundary of the lumped perturbation.
► Moreover, we employ finite-time strategy to obtain the properties of high precision and fast convergence speed.