PWM Controller's Models for Investigation Acs in Spicefamily Ecad Programs

Abstract

Purpose. To improve simulation and design of Automatic Control Systems in the SPICE This model is different from the existing ones: it synthesizes the staircase output signal instead the pulse one, thus, there is direct control of the amplitude of the output signal, which is taken averaged. The adequacy of the models is confirmed as comparison of the simulation results during investigations of the model already existing in the SPICE program, as well as the results of experiments with real ACS. The modeling of the PWM controller was carried out on the basis of behavioral elements from the ECAD library, simulation (solution of algebra-differential equations systems with programming elements) is based on SPICE algorithms. The object of the study was the simulation process of ACS with the pulse-width principle of adjusting the output (CAS, CAE).