Implementation of Dual-server Switching for Shipborne ACU Under Dynamic Tracking Condition

The antenna control unit(ACU) is one of the major constituent parts of shipborne antenna servo system. At present, the dual-server hot-backup technology has been applied to ACU, but the switching between the host and the backup would cause larger step change during the process of dynamic tracking and it could bring about the loss of tracked-target, which would result in the weakness of hot-backup function. To this point, this paper represents the working principle of auto-tracking loop and host-backup switching and analyses the reason of step change. Then an novel approach is presented to realized the smooth switching of ACU under dynamic tracking condition via memory tracking in order to accomplish the continuous output of speed command to antenna within switching period, by which the antenna could track the target stably. The results of experiments indicate that the maximal error voltage is less than 0.08V, which enhances the reliability of facility effectively.

Antenna control unit(ACU), dynamic tracking, dual-server switch, step change, speed command

Zhang Hao, Tao Min, Implementation of Dual-server Switching for Shipborne ACU Under Dynamic Tracking Condition. 2019 Scientific Conference on Network, Power Systems and Computing (NPSC 2019), 2019: 92-95. DOI: https://doi.org/10.33969/EECS.V3.021.