西门子产品说明6SE6430-2UD35-5FB0

6SE6430-2UD35-5FB0 

6SE6430-2UD35-5FB0 伺服系统按所用驱动元件的类型可分为机电伺服系统、液压伺服系统和气动伺服系统。基本的伺服系统包括伺服执行元件(电机、液压缸)、反馈元件和伺服驱动器。若想让伺服系统运转顺利还需要一个上位机构，PLC、以及专门的运动控制卡，工控机+PCI卡，以便给伺服驱动器发送指令。

伺服系统的工作原理简单的说就是在开环控制的交直流电机的基础上将速度和位置信号通过旋转编码器、旋转变压器等反馈给驱动器做闭环负反馈的PID调节控制。再加上驱动器内部的电流闭环，通过这3个闭环调节，使电机的输出对设定值追随的准确性和时间响应特性都提高很多。伺服系统是个动态的随动系统，达到的稳态平衡也是动态的平衡。伺服系统主要由三部分组成：控制器，功率驱动装置，反馈装置和电动机。控制器按照数控系统的给定值和通过反馈装置检测的实际运行值的差，调节控制量;功率驱动装置作为系统的主回路，一方面按控制量的大小将电网中的电能作用到电动机之上，调节电动机转矩的大小，另一方面按电动机的要求把恒压恒频的电网供电转换为电动机所需的交流电或直流电;电动机则按供电大小拖动机械运转。 

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