交流伺服驱动系统介绍

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normal style="MARGIN: 1px 0cm 1px 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; tab-stops: list 18.0pt; mso-list: l23 level1 lfo13" align=left>    一、交流伺服驱动系统的组成

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normal style="MARGIN: 1px 0cm 1px 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; tab-stops: list 18.0pt; mso-list: l23 level1 lfo13" align=left>    一般闭环伺服系统的结构是一个三环结构系统，外环是位置环，中环是速度环，内环为电流环。

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normal style="MARGIN: 1px 0cm 1px 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 150%; tab-stops: list 18.0pt; mso-list: l23 level1 lfo13" align=left>    二、闭环位置控制的实现

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    插补程序输出ΔX，新的指令位置X+ΔX与计数器中的实际位置XF进行比较，其差值经增益放大，并由D/A转换为模拟电压，使工作台向误差减小的方向移动。

    三、交流伺服电动机（简单回顾，注意与《数控机床伺服控制》课程的衔接）

    1、结构(永磁同步电机) 主要由：定子、转子和检测元件等几部分组成。

    2、工作原理

    3、主要特性参数

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normal style="MARGIN: 1px 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-char-indent-size: 12.0pt" align=left>    通常由光电码盘4、光源5、透镜6、光栅板7、光敏元件8等元件组成。

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normal style="MARGIN: 1px 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-char-indent-size: 12.0pt" align=left>    五、进给伺服系统的连接

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    1、模拟式伺服系统连接

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normal style="MARGIN: 1px 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-char-indent-count: 2.0; mso-char-indent-size: 12.0pt" align=left>    2、伺服系统的参数

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normal style="MARGIN: 1px 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 150%; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-char-indent-count: 2.0; mso-char-indent-size: 12.0pt" align=left>    滞后时间常数

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