A Lift Up Intelligent Control System

The important subject that the construction industry should be accomplished today and in the future is in the rationalization of the construction processes and how to improve the labor-intensiveness of construction sites. The authors have carried out research on the rationalization of the construction of a structure having a long-span of over 10m. In the course of this research, we came to the conclusion that by using waffle slabs it is best to adopt large-size precasting in floor size and to use a production process in which such precast members are lifted up. As hardware technology used in such a construction system we fabricated a prototype device of a Lift Up Intelligent Control System using a new logic, and in lift-up operation experiments we confirmed that it is possible to control the relative position at each point during lift-up and to do synchronized lifting of large-size precast members.