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This paper presents a wavelet based adaptive observer based control strategy for a class of uncertain multiple input multiple output (MIMO) delayed nonlinear systems subjected to actuator saturation. The time delay observer presented in this paper is the extension of observer design for SISO systems. The proposed wavelet adaptive observer performs the task of identification of unknown system dynamics...
In this work, we focus on distributed model predictive control of nonlinear systems subject to delayed measurements. Delayed measurements arise naturally in process control applications when, for example, species concentrations or particle size distributions are measured. We design distributed Lyapunov-based model predictive controllers that coordinate their actions and take delayed measurements explicitly...
This paper addresses the high precision positioning issue of permanent magnet (PM) linear motors, in presence of spatially periodic forces, also known as cogging. Using an internal model representation of this perturbation, an observer-based controller only relying on position measurements is derived. The observation error is not autonomous, and the stability analysis of the resulting closed loop...
Resonance tracking control of oscillatory plants whose natural frequency is unknown is investigated from a Lyapunov stability perspective. In particular, an event-triggered discrete-time system is investigated for this purpose. The proposed resonance tuner is time-synchronized with periodic sampling of the harmonic plant's output to ensure that an analytical relationship exists between the period...
In this paper, we have concentrated on real systems consisting of structural uncertainties and affected by external disturbances. In this regard, sliding mode control (S.M.C.) is utilized. To decrease energy consumption, arising from chattering phenomenon, a smooth switch has been used in design procedure. Consequently, sliding equation will play a dominant controlling role in its neighborhood. The...
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