The results of experiment tell it is an effective method of share current . a strategy of synchronization control , which combines competition coequality and priority , is mentioned in the paper and uses digital phase - lock loop to track synchronization signal 在同步控制上,应用了“优先与抢占”的方式产生同步信号,纯硬件实现,简单可靠;使用了成熟的数字锁相环来跟踪同步信号。