Dynamics of an overhead crane under a wind disturbance condition

Modelling and robust trajectory following for offshore container crane systems

“…Since the use of crane systems has been widespread in transportation, construction and manufacturing, extensive studies have been made to improve the efficiency of the systems. These include modelling of crane dynamics by considering disturbances in the system environment such as the wind effects [5,6], path-planning designs to improve cranes' efficiency [7][8][9], and crane control designs [10][11][12]. However, conventional control methods, applied to crane systems in general, may be infeasible to offshore cranes which are subject to wave-and wind-induced disturbances of large amplitudes.…”

Generalized Predictive Control of an overhead crane

“…The feedback-based approaches are proposed based on a proportional-derivative (PD) controller coupled with nonlinear controllers [9], hybrid PID control and input shaping technique [10], gain-scheduling [11], sliding mode control [12][13][14], and delayed reference noncolocated control [15]. Feedback control methods are also adapted to ensure the robustness to external disturbances and model uncertainty in feedforward or optimal control strategies [16][17][18]. Moreover various contact and contactless techniques for sensing the sway-angle of a suspended payload are proposed for feedbackbased control approaches [19][20][21][22][23][24].…”

The Impact of the FLC Controller’s Settings on the Precision of the Positioning of a Payload Transferred by a Mobile Crane

“…These are usually systems that implement a particular strategy of controlling the working motion which ensures that the carried payload stops at a target point and that, at the same time, the payload's oscillations are eliminated. When disturbances appear or the implementation of the adopted control strategy is interrupted, these systems do not ensure minimising the oscillations of the payload at a target point (Lee and Lee, 2002;Tomczyk et al, 2014). The transfer of the payload by using the rotational motion of a lifting device, as is the case with slewing, mobile or tower cranes, causes particular difficulty in this regard.…”