公开(公告)号：US5289319A

公开(公告)日：1994-02-22

申请号：US960034

申请日：1992-10-13

申请人： Enrique E. Aviles ,  Edwin R. Childers ,  Alan A. Fennema ,  Dave P. McReynolds

发明人： Enrique E. Aviles ,  Edwin R. Childers ,  Alan A. Fennema ,  Dave P. McReynolds

IPC分类号： G11B7/09 ,  G02B7/02 ,  G11B7/00

CPC分类号： G11B7/0925

摘要： A rotary positioner is rotatably mounted upon a reciprocating carriage of a optical disk drive. To detect and indicate one of a plurality of possible orientations of the disk drive, a side bias force is applied to the rotary positioner in a direction orthogonal to the radius of the disk drive. It has been found that each orientation has a side bias at which gravity effects are removed from the rotary positioner. At these points of gravity accommodation, certain instabilities in servo operation occur. Since each orientation requires a different side bias force to create the respective servo instabilities, the side bias force causing such instability indicates the drive orientation. Two modes of testing for orientation are disclosed. The carriage positioner is actuate for causing a momentary uncorrected radial movement of the carriage. The response of the carriage servo is measured in one of two ways. The uncorrected momentary carriage motion is detected either by detecting changes in a position error signal of either the rotary position or the carriage.

摘要翻译： 旋转定位器可旋转地安装在光盘驱动器的往复滑架上。 为了检测并指示盘驱动器的多个可能取向中的一个，在与盘驱动器的半径相垂直的方向上，向旋转定位器施加侧偏压力。 已经发现，每个取向具有从旋转定位器去除重力效应的侧偏压。 在这些重力调节位置，伺服操作发生某些不稳定。 由于每个方向需要不同的侧向偏压力以产生相应的伺服不稳定性，所以引起这种不稳定性的侧偏压力表示驱动方向。 公开了两种取向测试模式。 滑架定位器被致动以引起滑架的瞬时未校正的径向移动。 滑架伺服的响应以两种方式之一测量。 通过检测旋转位置或滑架的位置误差信号的变化来检测未校正的瞬时滑架运动。