Some guidelines for an easier application of Popov's stability test

This paper compares the graphical and root-locus versions of Popov's stability test. The main purpose of the paper is to make possible the application of Popov's Method for a variety of non-linear elements.The various sectors of confinement are analyzed in detail for different non-linearities, and results are summarized in a table. The paper represents by itself a guide, permitting easier practical application of Popov's criterion, under different conditions.