Frequency-Modulation Input-Shaping Strategy for Double-Pendulum Overhead Cranes Undergoing Simultaneous Hoist and Travel Maneuvers
Large payloads hoisted by overhead cranes exhibit the same behavior as that of a double-pendulum.Changes in the hoisting cable length during payload transfer maneuvers here give rise to time-dependent system frequencies rendering input-shaped commands ineffective.In this paper, a frequency-modulation input-shaping strategy that enables simultaneous