Al-khazarji, H. A. H., Abdulsada, M. A. and Abduljabbar, R. B. (2020) “Robust Approach of Optimal Control for DC Motor in Robotic Arm System using Matlab Environment”, International Journal on Advanced Science, Engineering and Information Technology, 10(6), pp. 2231–2236. doi: 10.18517/ijaseit.10.6.8923.