State observer control for robotic series elastic actuators. COLOMBIAN JOURNAL OF ADVANCED TECHNOLOGIES, [S. l.], v. 2, n. 46, p. 32–39, 2025. DOI: 10.24054/rcta.v2i46.3801. Disponível em: https://ojs.unipamplona.edu.co/index.php/rcta/article/view/3801. Acesso em: 27 oct. 2025.