servo unit meaning in English

伺服机构继动装置伺服机件
伺服装置
随动机构

( 3 ) the communication and real time control technique beteen computer and plc and servo unit is developed
( 3 )研究了计算机与plc 、伺服单元的通信及实时控制技术。
The communication between computer and plc is realized by the programming port , and the communication between computer and servo unit is realized by databus , and the cooperative control between plc and servo unit is realized by an audion
利用plc的编程口实现了计算机与plc的通信。利用数据总线实现了计算机与伺服单元的通信。利用三极管的通断特性实现了plc控制打印头振动与伺服单元控制电动执行机构运动的协调。