国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

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 realize 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, and it enhances the reliability of facility effectively.