Snag detection includes monitoring angular deflection of the load (110) with respect to an at-rest position, and halting movement of the crane in a direction of increasing angular deflection. Controlling off center lifting includes detecting a side load condition for a load, and preventing a hoist operation when the side load condition is detected. Auto-centering a load includes determining a position of a block coupled to the load with respect to a trolley (104) of the crane, and centering the trolley over the block (104) prior to a moving operation. Centering includes comparing a position of a block marker (116) using a trolley camera (114) to a known centered position of the marker with respect to the camera, and moving the trolley to match the determined position of the marker to its known centered position.
CRANE MOTION CONTROL
COMMANDE DE DEPLACEMENT DE GRUE
2016-02-04
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |