This paper proposes an adaptive observer-based scheme to control fractional-order chaotic micro-electro-mechanical-systems (MEMS). The model of a system exhibits the dynamic behaviour physical more accurately than similar integer-order one. An considering unknown parameters is presented for micro-electro-mechanical-system. To handle existence parameters, law consists both estimated and also sta...

To improve the dynamic property and disturbance suppression ability of an electro-optical tracking system, this paper presents a disturbance-observer-based LQR control method. The robust controller is composed three parts: one controller, reference model other compensatory designed with output observer. uncertainty disturbances are considered in design. By Lyapunov stability theory linear matri...

pH control is a challenging problem due to its highly nonlinear nature. In this paper the performances of two different adaptive global linearizing controllers (GLC) are compared. Least squares technique has been used for identifying the titration curve. The first controller is a standard GLC based on material balances of each species. For implementation of this controller a nonlinear state...

A new result that allows the selection of sliding hyperplane coeecients in Observer-Based Discrete-Time Sliding Mode Control (OBDSMC) is presented. Selection of co-eecients is done by analyzing the tracking error dynamics inside the boundary layer-where the closed-loop system has a linear state feedback connguration-rather than assuming that the sliding function has already converged to zero. T...