1. P. Hahn, D. Chwa, and K. Hong, “A feedback linearization control of container cranes: varying rope length,” Interna tional Journal of Control, Automation and Systems, vol. 5, no. 4, pp. 379–387, 2007.
2. D. Liu and W. Guo, “Nonlinear controller design for the underactuated crane system,” International Journal of Control and Automation, vol. 6, no. 6, pp. 93–104, 2013.
3. D. Qian and J. Yi, “Design of combining sliding mode controller for overhead crane systems,” International Journal of Control and Automation, vol. 6, no. 1, pp. 131–140, 2013.
4. A. Kaur, S. Kumari, and T. Singh, “Position control of overhead cranes using fuzzy controller,” International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, vol. 3, no. 5, pp. 9341–9350, 2014.
5. A. Pal and R. K. Mudi, “An adaptive PD-type FLC and its real time implementation to overhead crane control,” International Association of Scientific Innovation and Research, vol. 13, 2013.