Real Time Control Of Spindle Runout
Real Time Control Of Spindle Runout
复制标题
实时控制主轴跳动
DOI：
10.1117/12.7973594
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
T. Dow
中科院分区：
文献类型：
--
作者：
T. Bifano;T. Dow
可以通过反馈控制提高机械精度的物理系统的一个例子是电机驱动的主轴。这种系统被用作研究测量和驱动系统以及控制算法的试验台。该装置采用涡流探头测量跳动误差，用压电晶体移动主轴以减小误差，用小型计算机用FORTRAN语言编制反馈控制程序。校正前的主轴跳动为2.5 itm（100 gin）。范围内;与误差校正系统到位，这个错误被减少到小于0.25微米（10针）。一个数量级的改进。虽然该主轴的校正跳动数字仍然高于精密空气轴承主轴，但该技术为精密主轴性能提供了新的可能性，包括对磨损，热变形和不平衡负载的校正。
An example of a physical system whose mechanical accuracy can be improved by feedback control is a motor-driven spindle. Such a system is being used as a test-bed to study measurement and actuation systems as well as control algorithms. The specific apparatus reported utilizes an eddy-current probe for runout error measurement, a piezo-electric crystal to move the spindle to reduce the error, and a minicom-puter using a FORTRAN program for the feedback controller. The spindle runout before correction is in the 2.5 itm (100 gin.) range; with the error correction system in place, this error is reduced to less than 0.25 um (10 pin.)-an order of magnitude improvement. While the corrected runout figures for this spindle are still above those of a precision air-bearing spindle, the technique presents new possibilities for precision spindle performance including correction for wear, thermal deformations, and unbalanced loads.