公开(公告)号：US06522493B1

公开(公告)日：2003-02-18

申请号：US09300071

申请日：1999-04-27

申请人： Jeff J. Dobbek ,  Gregory Michael Frees ,  Craig N. Fukushima ,  Louis Joseph Serrano ,  Markus Staudenmann

发明人： Jeff J. Dobbek ,  Gregory Michael Frees ,  Craig N. Fukushima ,  Louis Joseph Serrano ,  Markus Staudenmann

IPC分类号： G11B2102

CPC分类号： G11B5/59627

摘要： A method, apparatus, and article of manufacture for determining a transducer position in relation to a media surface is described. The method comprises sensing positioning information on the media, measuring a position error signal from the sensed positioning information wherein the position error signal includes first and second position signal components, accessing stored information describing a non-linear relationship between the measured position error signal and the transducer position, and applying the stored relationship to the measured position error signal to produce a corrected position error signal, and determining the transducer position from the corrected position error signal.

摘要翻译： 描述了一种用于确定相对于介质表面的换能器位置的方法，装置和制品。 该方法包括：感测媒体上的定位信息，根据感测到的定位信息测量位置误差信号，其中位置误差信号包括第一和第二位置信号分量，访问存储的信息，描述所测量的位置误差信号与 换能器位置，并且将所存储的关系应用于所测量的位置误差信号以产生校正的位置误差信号，以及根据校正的位置误差信号确定换能器位置。

公开(公告)号：US06421198B1

公开(公告)日：2002-07-16

申请号：US09300026

申请日：1999-04-27

申请人： Bernd Lamberts ,  Louis Joseph Serrano ,  Markus Staudenmann ,  Mantle Man-Hon Yu

发明人： Bernd Lamberts ,  Louis Joseph Serrano ,  Markus Staudenmann ,  Mantle Man-Hon Yu

IPC分类号： G11B5596

CPC分类号： G11B5/59627

摘要： Linearity compensation is provided for a position error signal based on repeatable and non-repeatable run out in a data storage device. The run out is measured on a track of the data storage device at a plurality of points, such as a track center and one or more points offset from the track center. The run out is typically measured using either an unstitched primary position error signal or an unstitched quadrature position error signal. The offsets are usually stitch points for the position error signal. A component of the run out is extracted at the points, wherein the component generally comprises one or more characteristics of the run out, such as a frequency, a set of frequencies, a root mean square, or some other characteristic of the run out. The linearizing equation to be used for the position error signal is identified based on the measured run out and generally comprises a polynomial function. The coefficients of the linearizing equation are adjusted so that the run out and the component of the run out are substantially similar at the points. These steps are repeated until a satisfactory fit is achieved in the linearizing equation. Once a satisfactory fit is achieved, the coefficients for the linearizing equation are stored in the data storage device, so that they can be accessed by a servo controller during operation of the data storage device. The servo controller uses the linearizing equation to generate a linearized position error signal that is used to improve a track following capability of the data storage device.

摘要翻译： 基于在数据存储装置中可重复且不可重复的耗尽的位置误差信号提供线性补偿。 在轨道中心和偏离轨道中心的一个或多个点的多个点处在数据存储设备的轨道上测量跑出。 通常使用未缝合的初始位置误差信号或非缝合正交位置误差信号来测量跑出。 偏移量通常是位置误差信号的针迹点。 在点处提取跑步的分量，其中分量通常包括跑出的一个或多个特性，例如频率，一组频率，均方根或者跑出的其他一些特征。 用于位置误差信号的线性化方程式是基于测量的输出而被识别的，并且通常包括多项式函数。 调整线性化方程式的系数，使得耗尽量和耗尽量的分量在这些点上基本相似。 重复这些步骤，直到线性化方程式达到令人满意的拟合。 一旦实现令人满意的拟合，线性化方程的系数被存储在数据存储装置中，使得它们可以在数据存储装置的操作期间由伺服控制器访问。 伺服控制器使用线性化方程来产生线性化位置误差信号，该信号用于提高数据存储设备的跟踪能力。