LQR/Sliding Mode Controller Design Using Particle Swarm Optimization for Crane System. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 23, n. 1, p. 45–50, 2020. DOI: 10.29194/NJES.23010045. Disponível em: https://nahje.journalpath.com/nahje/article/view/206. Acesso em: 12 apr. 2026.