一套zui简单的单通道（单头）拧紧系统，包含一块控制?？?，一块放大器?？?，一块供电单元，控制

模块负责输出和反馈控制信号，由控制单元发出的控制信号通过放大器放大电路的处理发送给伺服拧

紧单元，拧紧单元根据这个信号进行拧紧或反转
跟其他自动化系统的控制单元没什么差别
伺服拧紧系统一般带扭矩传感器和转角传感器，集成数控系统，可以进行定扭矩、定转角等多种工艺

拧紧，精度较高。电批一般不带扭矩传感器，精度较低，但价格便宜。（电批就是电动螺丝刀）拧紧

系统就是电脑控制的自动螺丝刀

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