A new modelling for aperiodic sampling systems

Abstract

It is 8hown that an aperiodic discrete-continuous sampling system may be modelled by a difference equation matrix which may be used in the same way as in the case of periodic discrete systems. This fact allows the computation of the outputs as finite combinations of previous inputs and outputs. This is accomplished using a finite set of time-varying parameters, which are dependent on the parameters of the continuous transfer matrix and on a finite set of sampling periods equal to the order of the system state, and thus avoids impulse response methods and state variable measurements.