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In this study, output feedback sliding mode control (OFSMC) is proposed for a class of system with the uncertainties present in its output matrix. The uncertain output exist in practical system is mainly due to measurement error contributed by sensor noise or low measurement resolution. Sliding Mode Control (SMC) approach is able to provide a promisable solution due to its robustness toward system...
In this paper, a new decentralized variable structure control scheme is proposed for a class of large-scale time-delayed systems with mismatched uncertainties. To overcome the defect that neither time-delay interconnection terms nor uncertainties satisfy the conventional matching conditions, the coefficient matrix of the switching function can be designed to satisfy a new matching condition, meanwhile,...
This paper presents a general form for the fast terminal sliding mode (FTSM). It is shown that the proposed form not only includes the conventional FTSM, but also provides new types of FTSM which can have a faster convergence rate than the conventional one. More importantly, the convergence time of the new FTSM models is bounded for any initial value, which means an upper bound of the convergence...
In this paper, a solution is proposed in order to solve the chattering avoidance problem in variable structure control for a class of uncertain non linear systems with external disturbances. This approach is based on sliding mode control (SMC) with integral corrector in the boundary layer to synthesize a robust control system. The stability and the performances of the closed-loop system are proven...
The development of a synthesis methodology to design compensator-based sliding mode output feedback controllers using linear matrix inequalities is considered in this paper. The class of dynamical system dealt with belongs to the class of uncertain plants with matched, and mismatched uncertainties in polytopic form. The efficacy of the proposed design methodology is demonstrated by a numerical design...
Reaching law control (RLC) is an approach to sliding mode control (SMC) design which is widely applied in the presence of model uncertainties, parameter fluctuations and external disturbances now. This paper proposes a RLC method using in DC motor discrete time speed control system and discusses the implementation problems and the robustness of the control approach in details. Since the discrete time...
Because of super-cavitation, there is no buoyancy force to balance the gravity of super-cavitating vehicle. In addition, there exists the nonlinear planing force on the vehicle. The motion of vehicle in the vertical plane tends to be unstable and the dynamic model of it is complicated and nonlinear. By introducing a feed-forward compensation and nonlinear state feedback, the nonlinear system could...
The problems of stochastic stability and sliding mode Hinfin control for a class of nonlinear matched and mismatched uncertain systems with stochastic jumps are considered in this paper. The uncertain system under consideration may have mismatched norm bounded uncertainties in the state matrix. The transition of the jumping parameters in the systems is governed by a finite-state Markov process. A...
Control of a class of nonlinear/uncertain systems is discussed via a variable structure systems approach. In this paper the so-called unit vector control structure is exploited to the development of numeric design algorithm. A control law will be presented which induce and maintain sliding despite the presence of both matched and unmatched uncertainty. The natural extension to an controller design...
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