An alignment control system for controlling an alignment of a plurality of mobile towers, each mobile tower supporting a section of conduit in an irrigation system comprises a plurality of tower angle measurement devices and a control processing element. Each tower angle measurement device is associated with a successive one of the mobile towers and is configured to measure an angle value which varies according to a rotation angle of the associated mobile tower relative to one or more of the other mobile towers. The control processing element is configured or programmed to receive the angle value from each tower angle measurement device, compare the angle value to a threshold angle value, and generate and transmit control signals, data, or both that include an activation hysteresis value to a drive motor associated with each mobile tower that has an angle value greater than the threshold angle value.