Multi-attribute fuzzy control of construction activities

The control of construction activities usually involves monitoring and manipulating multiple attributes at the same time. A multi-attribute real-time fuzzy controller is presented. The proposed system monitors and controls two or more attributes, utilizing a set of single-attribute control systems operating in parallel. The proposed system includes a conflict resolution unit which is responsible for resolving any conflicting commands resulting from the individual parallel control systems. The conflict resolution unit should result in a compromise control action that satisfies all the involved attributes as closely as possible. A fuzzy utility function is utilized in rating all potential alternatives. Then, a utility ranking is performed to select the compromise or best alternative. The selection of this alternative is based on the maximization of the corresponding utility rank