Performance studies of human operators driving double-pendulum bridge cranes

Abstract Oscillation of crane payloads makes it challenging to manipulate payloads quickly, accurately, and safely. The problem is compounded when the payload creates a double-pendulum effect. This paper evaluates an input-shaping control method for reducing double-pendulum oscillations. Human operator performance testing on a 10-ton industrial bridge crane is used to verify the effectiveness and robustness of the method. Fifty operators drove the crane with a standard control pendent, as well as a wireless touchscreen interface. Data from these experiments show that human operators drive the crane much faster and safer with the input-shaping control scheme. Furthermore, considerably less operator effort is required when input shaping is used to limit the oscillation. Additional tests required the operators to drive the crane numerous times over a period of eight days. These experiments show that significant learning occurred when operators did not have the aid of input shaping. However, the performance never approached that achieved by untrained operators using input shaping.

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

[2]  William Singhose,et al.  Reference Command Shaping Using Specified-Negative-Amplitude Input Shapers for Vibration Reduction , 2004 .

[3]  Wayne J. Book,et al.  Eliminating multiple modes of vibration in a flexible manipulator , 1993, [1993] Proceedings IEEE International Conference on Robotics and Automation.

[4]  O. Smith.  Posicast Control of Damped Oscillatory Systems , 1957 .

[5]  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).

[6]  Warren P. Seering,et al.  Time-Optimal Negative Input Shapers , 1997 .

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

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

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

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

[11]  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.

[12]  Rush D. Robinett,et al.  Command shaping control of an operator-in-the-loop boom crane , 1998, Proceedings of the 1998 American Control Conference. ACC (IEEE Cat. No.98CH36207).

[13]  William Singhose,et al.  Command shaping for flexible systems: A review of the first 50 years , 2009 .

[14]  Tarunraj Singh,et al.  Robust time-delay control of multimode systems , 1994, Proceedings of 1994 American Control Conference - ACC '94.

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

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

[17]  Dooroo Kim,et al.  Evaluation and integration of a wireless touchscreen into a bridge crane control system , 2007, 2007 IEEE/ASME international conference on advanced intelligent mechatronics.

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

[19]  Max Donath,et al.  American Control Conference , 1993 .

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

[21]  William Singhose,et al.  AN INTERNET-DRIVEN TOWER CRANE FOR DYNAMICS AND CONTROLS EDUCATION , 2006 .

[22]  R. Blevins,et al.  Formulas for natural frequency and mode shape , 1984 .

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