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1. 发明授权

US06466257B1 Method and tool for measurement of roll static attitude of sliders in a magnetic recording head stack assembly 失效
标题翻译：用于测量磁记录头组件中滑块的静态静态的方法和工具
公开(公告)号：US06466257B1
公开(公告)日：2002-10-15
申请号：US09431020
申请日：1999-11-01
申请人： Eric Gordon Baugh , Myron Dale Flickner , Robert Edward Fontana, Jr. , Stephen Arnold Olson , Gurinder Pal Singh
发明人： Eric Gordon Baugh , Myron Dale Flickner , Robert Edward Fontana, Jr. , Stephen Arnold Olson , Gurinder Pal Singh
IPC分类号： H04N947
CPC分类号： G11B5/4806 , G11B5/455 , G11B33/10
摘要： A method and tool for measurement of the roll static attitude and y-misalignment of magnetic recording sliders within the head stack assembly having reference elements placed on the deposited end of the magnetic recording slider, which are optically analyzed by a video camera connected to a computer. For fast measurement the head stack assembly is clamped in a fixture mounted on motorized stages, which move each slider into the measurement position. In a two step imaging and analyzing process, the orientation and location of one or more edges of the reference element are computed and compared with known control parameters.
摘要翻译：一种用于测量位于磁记录滑块的沉积端上的参考元件的磁头堆叠组件内的磁记录滑块的滚动静态和Y偏移的方法和工具，其通过连接到计算机的摄像机进行光学分析。为了快速测量，磁头堆叠组件被夹紧在安装在电动平台上的固定装置中，其将每个滑块移动到测量位置。在两步成像和分析过程中，计算参考元素的一个或多个边缘的取向和位置，并与已知的控制参数进行比较。

2. 发明授权

US07345841B2 Disk drive using a disturbance sensor for disturbance frequency-identification and suppression 有权
标题翻译：磁盘驱动器使用干扰传感器进行干扰频率识别和抑制
公开(公告)号：US07345841B2
公开(公告)日：2008-03-18
申请号：US11349774
申请日：2006-02-07
申请人： Eric Gordon Baugh , Tetsuo Semba , Matthew T. White
发明人： Eric Gordon Baugh , Tetsuo Semba , Matthew T. White
IPC分类号： G11B21/02
CPC分类号： G11B5/5582 , G11B5/59622
摘要： A magnetic recording disk drive has a disturbance sensor and a disturbance frequency identifier that are used to adjust the frequency of a peak filter as the disturbance frequency changes. The sensor and the frequency identifier are separate from the servo control loop and thus do not rely on the head position error signal (PES) to predict the disturbance frequency. The adjustable peak filter is coupled in parallel with the servo feedback controller. The peak filter modifies the open loop transfer function and the error rejection function of the servo control loop to provide a higher rejection at the identified frequency. The peak filter may be switched out of or uncoupled from the servo feedback controller during track-seeking or as desired, depending on the amplitude of the sensor signal or the amplitude of the PES.
摘要翻译：磁记录盘驱动器具有干扰传感器和干扰频率标识符，用于随着扰动频率的变化来调整峰值滤波器的频率。传感器和频率标识符与伺服控制环分开，因此不依赖于头位置误差信号（PES）来预测扰动频率。可调峰值滤波器与伺服反馈控制器并联耦合。峰值滤波器修改开环传递函数和伺服控制回路的误差抑制功能，以在识别的频率提供更高的抑制。根据传感器信号的幅度或PES的振幅，峰值滤波器可以在跟踪寻找期间或根据需要从伺服反馈控制器切换或分离。

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