公开(公告)号：US06785080B1

公开(公告)日：2004-08-31

申请号：US09974454

申请日：2001-10-09

申请人： Yu Sun ,  Don Brunnett ,  XiaoPing Hu

发明人： Yu Sun ,  Don Brunnett ,  XiaoPing Hu

IPC分类号： G11B2102

CPC分类号： G11B5/59622

摘要： A method and apparatus for controlling the position of a disk drive transducer head relative to a target track are provided. An oversampled control output allows frequencies that are higher than the Nyquist frequency of the servo control system to be filtered. The system initiates a plurality of control outputs during a single sampling period, allowing the use of a single processor interrupt for each sampling period. The outputs initiated during a single sampling period may be of unequal length. In addition, the outputs may be proportioned so that the total control energy provided to the actuator is equal to the control energy that would be provided by control outputs initiated every one-half sampling period.

摘要翻译： 提供了一种用于控制盘驱动器换能器头相对于目标轨道的位置的方法和装置。 过采样控制输出允许高于伺服控制系统的奈奎斯特频率的频率进行滤波。 系统在单个采样周期内启动多个控制输出，允许在每个采样周期使用单个处理器中断。 在单个采样周期期间发起的输出可能具有不相等的长度。 此外，输出可以成比例，使得提供给致动器的总控制能量等于由每半个采样周期启动的控制输出将提供的控制能量。