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Lyapunov-Krasowskii functionals are used to design quantized control laws for nonlinear continuous-time systems in the presence of time-invariant constant delays in the input. The quantized control law is implemented via hysteresis to avoid chattering. Under appropriate conditions, our analysis applies to stabilizable nonlinear systems for any value of the quantization density. The resulting quantized...
Model following control system (MFCS) can output general signals following the desired ones. In this paper, a method of nonlinear model following control system will be extended to be a nonlinear system in discrete time. The nonlinear system studied in this paper has the property of norm constraint ?? f (v(t)) ?? ???? + ????v(t)????, where ?? ?? 0, ?? ?? 0, 0 ?? ?? ?? 1. In this case, a new criterion...
In this paper we consider the problem of driving to zero by means of state feedback the state of a nonlinear plant when only an approximate model of the plant is known and the information about its state is sampled. To this aim, we develop a specific model based control scheme and, under suitable hypotheses, we give a sufficient condition, in terms of length of the sampling interval and of other design...
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