When cranes lift payloads off the ground, the payload may slide sideways or swing unexpectedly. This motion occurs when the payload is not directly beneath the overhead suspension point of the hoist cable. Given that cable suspension points can be hundreds of feet above the payload, it is difficult for crane operators to know if the hoist cable is vertical before lifting the payload off the ground. If an off-center lift creates substantial horizontal motion, then it can create significant hazards for the operators, the payload, and the surrounding environment. This paper develops a three-dimensional dynamic model that predicts motions of off-centered lifts.
Three-Dimensional Dynamic Modeling and Control of Off-Centered Bridge Crane Lifts
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received January 15, 2016; final manuscript received October 11, 2016; published online February 6, 2017. Assoc. Editor: Heikki Handroos.
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Garcia, A., Singhose, W., and Ferri, A. (February 6, 2017). "Three-Dimensional Dynamic Modeling and Control of Off-Centered Bridge Crane Lifts." ASME. J. Dyn. Sys., Meas., Control. April 2017; 139(4): 041005. https://doi.org/10.1115/1.4035030
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