1. Shi XJ, Liao PL, Yi CH (2006) Design and realization of the upper computer monitoring and control system of the Caobazhou ship lift. Hydropower Autom Dam Monit 3:007
2. Yi CH, Shi XJ, Liu J (2012) Design and realization of electrical control system for hydraulic shiplift. Water Power 10
3. Nunez C, Alvarez R, Cervantes I (2004) Comparison of multi-motor synchronous techniques. In: IECON 2004. 30th Annual conference of IEEE industrial electronics society, 2004, vol 2, pp 1670–1675
4. Liu F, Zhang X, Liu L (2002) Synchronous control theory and practical study of multi-motor synchronous driving system. Basic Autom 4:027
5. Koren Y (1980) Cross-coupled biaxial computer control for manufacturing systems.ASME. J Dyn Syst Meas Control 102(4):265–272