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    Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members
    1.
    发明授权
    Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members 失效
    单回路伺服定位系统具有用于通过相对移动的构件的速度改变位置误差信号的动态范围的装置

    公开(公告)号：US5257251A

    公开(公告)日：1993-10-26

    申请号：US764264

    申请日：1991-09-23

    申请人： W. Wai-Chung Chow ,  Alan A. Fennema

    发明人： W. Wai-Chung Chow ,  Alan A. Fennema

    IPC分类号： G11B7/085 ,  G11B7/095

    CPC分类号： G11B7/08511

    摘要： A single loop servo is used for positioning a lens holding element with respect to an optical disk. The dynamic range of the error signal used in the positioning is dynamically frequency shifted such that the servo summing of the error signal with a reference signal (velocity reference) is always performed within the same dynamic range. This action simplifies circuit operation as the dynamic range of the error signal is compressed at high speeds. Two embodiments of the invention are described.

    摘要翻译： 使用单回路伺服器来相对于光盘定位透镜保持元件。 在定位中使用的误差信号的动态范围动态地频移，使得误差信号与参考信号（速度参考）的伺服相加总是在相同的动态范围内执行。 该动作可以在误差信号的动态范围被高速压缩时简化电路运行。 对本发明的两个实施例进行描述。