Dynamics and Control of Bridge Cranes Transporting Distributed-Mass Payloads

The large-amplitude and lightly-damped oscillation of crane payloads is detrimental to safe and efficient operation. The problem is further complicated when the payload creates a double-pendulum effect. Previous researches have shown that single-mode oscillations can be greatly reduced by properly shaping the inputs to the crane motors. This paper builds on previous developments by thoroughly describing the double-pendulum dynamic effects as a function of payload parameters and the crane configuration. Furthermore, an input-shaping control method is developed to suppress double-pendulum oscillations created by a payload with distributed-mass properties. Experiments performed on a 10-ton industrial bridge crane verify the effectiveness of the method. A critical aspect of the testing was human operator studies, wherein numerous operators utilized the input-shaping controller to perform manipulation tasks. The performance improvements provided by the input-shaping controller, as well as operator learning effects, are reported.

[1]  Warren P. Seering,et al.  Using input command pre-shaping to suppress multiple mode vibration , 1991, Proceedings. 1991 IEEE International Conference on Robotics and Automation.

[2]  Keum-Shik Hong,et al.  Input shaping and VSC of container cranes , 2004, Proceedings of the 2004 IEEE International Conference on Control Applications, 2004..

[3]  Ziyad N. Masoud,et al.  Pendulation Reduction on Small Ship-Mounted Telescopic Cranes , 2004 .

[4]  William J. O'Connor.  A Gantry Crane Problem Solved , 2003 .

[5]  Michael H. Kenison,et al.  Input Shaping Control of Double-Pendulum Bridge Crane Oscillations , 2008 .

[6]  Warren P. Seering,et al.  Convolved and simultaneous two-mode input shapers , 1997 .

[7]  G. R. Heppler,et al.  Shaped Input Control of a System With Multiple Modes , 1993 .

[8]  William Singhose,et al.  An input shaping controller enabling cranes to move without sway , 1997 .

[9]  William Singhose,et al.  Human Operator Performance Testing Using an Input-Shaped Bridge Crane , 2006 .

[10]  Nenad Zrnić,et al.  Automation of ship-to-shore container cranes: A review of state-of-the-art , 2005 .

[11]  Warren P. Seering,et al.  INPUT SHAPING FOR VIBRATION REDUCTION WITH SPECIFIED INSENSITIVITY TO MODELING ERRORS , 1996 .

[12]  Ali H. Nayfeh,et al.  Dynamics and Control of Cranes: A Review , 2003 .

[13]  J.T. Feddema.  Digital Filter Control of Remotely Operated Flexible Robotic Structures , 1993, 1993 American Control Conference.

[14]  Warren P. Seering,et al.  Preshaping Command Inputs to Reduce System Vibration , 1990 .

[15]  Keum-Shik Hong,et al.  Time-efficient input shaping control of container crane systems , 2000, Proceedings of the 2000. IEEE International Conference on Control Applications. Conference Proceedings (Cat. No.00CH37162).

[16]  Yi Jianqiang,et al.  Passivity-based-control for double-pendulum-type overhead cranes , 2004, 2004 IEEE Region 10 Conference TENCON 2004..

[17]  Otto J. M. Smith,et al.  Feedback control systems , 1958 .

[18]  Gregory P. Starr,et al.  Swing-Free Transport of Suspended Objects With a Path-Controlled Robot Manipulator , 1985 .

[19]  William Singhose,et al.  Effects of hoisting on the input shaping control of gantry cranes , 2000 .

[20]  William Singhose,et al.  A controller enabling precise positioning and sway reduction in bridge and gantry cranes , 2007 .

[21]  Rush D. Robinett,et al.  Experimental verification of a command shaping boom crane control system , 1999, Proceedings of the 1999 American Control Conference (Cat. No. 99CH36251).