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This paper considers stability and stabilization of multiple networked control systems (NCSs) with node devices acting over a limited communication channel. We are particularly interested in the case that only one subsystem can access the network to transmit it's state information at a time. Stability of multiple NCSs with packet transmitted in a periodic manner is closely related to periodically...
This paper presents a controller design algorithm for a class of networked control systems with random delay based-on variable-period sampling model, where the sensor to controller delay is modeled as a Markov chain. Since the time delay varies randomly, the time delay to occur at current sampling step is regarded as the sampling period between current sampling step and next sampling step. Using the...
Disturbance observer proposed in this paper estimates the equivalent input disturbance and modifies control law to reject it. A reduced order observer is used to estimate disturbance from the input-output measurement when subject to large disturbance. Convergence of disturbance estimator is decided by the observer gain, which is selected through sufficient condition for stability. Simulation studies...
This paper deals with a discrete-time piecewise affine (PWA) systems with time-delay. The PWA systems is described as ellipsoid which can be characterized by a set of vector inequalities, thereby the constraint of linear matrix inequalities (LMIs) is released. In terms of LMIs, the time-delay PWA system can be stabilized in Lyapunov theory. A convex optimization problem with LMIs constraints is formulated...
This paper studies the problems of stability analysis and state feedback controller design for continuous-time networked control systems (NCSs). Model of NCSs with multiple-packet transmission and packet dropout in both the sensor-to-controller channel and controller-to-actuator channel is derived, then the stability condition for NCSs with multiple-packet transmission is presented, and a new method...
This paper deals with the stability analysis and controller design of linear systems with state delay and input saturation. First, a delay-dependent stability criterion is derived within the framework of linear matrix inequalities by using some free matrices to express the relationship of the terms in the Leibniz-Newton formula. Then the problem of designing linear state feedback laws which guarantees...
Based on Takagi-Sugeno (T-S) fuzzy models, the energy-to-peak filtering problem is studied for a class of nonlinear stochastic neutral systems with delays. Sufficient conditions on the stochastic stability with prescribed L2-L-noise attenuation level are proposed. The conditions and the optimal design of the controller are formulated as a set of direct linear matrix inequalities (LMIs). The effectiveness...
Repetitive processes are a distinct class of 2D systems (i.e. information propagation in two independent directions) of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard (termed 1D here) or 2D systems theory. In this paper, we exploit their unique physical structure to show how two term, i.e. proportional plus...
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