Control of A Tower Crane without Sensor for Load-Rope Angle (2DOF Control Using Final-State Control Method with Error Learning)

This paper deals with control of a crane mounted on a tower-like flexible structure called the “Tower crane” by using no sensor for the load-rope angle, since it is difficult to put the sensor on a real tower crane. We make its models and design the two-degree-of-freedom control system. The feedback controller that does not use the sway angle signal is designed by considering the coupling between the load sway and the crane itself. The feedforward input is designed by the final-state control method with error learning. By experiments it is verified that the 2 DOF controller without the sensor for the load-rope angle has almost same performance as the feedback controller alone with the sensor.