THE IMPROVEMENT MADE BY THE NONLINEAR PROPORTIONAL INTEGRAL CONTROLLER COMPARED TO THE VARIABLE GAIN PROPORTIONAL INTEGRAL CONTROLLER: n/a. REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE, [S. l.], v. 68, n. 2, p. 158–163, 2023. DOI: 10.59277/RRST-EE.2023.68.2.7. Disponível em: https://journal.iem.pub.ro/rrst-ee/article/view/235.. Acesso em: 3 jul. 2024.