#$%^&*AU2013200361A120131010.pdf#####ABSTRACT [0001] A control system of an irrigation system to continuously drive a plurality of towers supporting an elevated pipeline along a path while maintaining the pipeline in an aligned configuration. The system includes an antenna, a receiver, a controller, and a variable-speed drive motor. The antenna receives signals from at least one external positional information source. The receiver is in communication with the antenna and operable to process the signals to produce positional data corresponding to an alignment of the elevated pipeline. The controller is in communication with the receiver and programmed to adjust a speed of the motor based on the alignment data. 19clli c"ll 00 1 00 N ) C) m CNI 00 P4-) m m 1 00 ---------- - *"CD fl If If C-4 11 CN 00 /k C-) 1 00 ro CD 11 11 If 11 CJ 11 OC) C14 1 00 CZ) ,IC:) -dCD LO LO
