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    • 3. 发明授权
    • Disk drive and method of controlling the same
    • 磁盘驱动器及其控制方法
    • US5229896A
    • 1993-07-20
    • US780783
    • 1991-10-23
    • Souichi TohyamaHiromu HiraiHaruaki OtsukiYoosuke Hamada
    • Souichi TohyamaHiromu HiraiHaruaki OtsukiYoosuke Hamada
    • G05B17/02G05D3/12G11B21/08G11B21/10
    • G11B21/083
    • A disk drive has a data recording medium disk, a head disposed facing a recording surface of the disk, for reading and writing data, a positioning mechanism for supporting and moving the head, a position detector for detecting the position of the head and outputting a position detection signal, and a control unit for processing the position detection signal and outputting a position control signal to the positioning mechanism. The control unit calculates a target acceleration signal for a given target track so as to make a turnaround frequency of a frequency component of the target acceleration signal coincident with a resonance frequency of the head positioning mechanism, calculates a target position for a head positioning operation in accordance with the target acceleration signal, calculates a position command value by inputting the target position signal to a model (inverse model) of an approximate inverse system to a position control system which includes the head positioning mechanism and the position detector, and outputs a position tracking error to the positioning mechanism, the position tracking error being the difference between the position command value and the position detection signal of the head.
    • 磁盘驱动器具有数据记录介质盘,朝向盘的记录表面设置的用于读取和写入数据的头,用于支撑和移动头部的定位机构,用于检测头部的位置并输出 位置检测信号,以及用于处理位置检测信号并向定位机构输出位置控制信号的控制单元。 控制单元计算用于给定目标轨道的目标加速度信号,以使目标加速度信号的频率分量的周转频率与头部定位机构的共振频率一致,计算头部定位操作的目标位置 根据目标加速度信号,通过将目标位置信号输入到包括头部定位机构和位置检测器的位置控制系统的近似逆系统的模型(逆模型)来计算位置指令值,并且输出位置 定位机构的跟踪误差,位置跟踪误差是位置指令值与头部位置检测信号之间的差值。
    • 6. 发明申请
    • MOVING OBJECT FEED-FORWARD CONTROL METHOD
    • 移动物体进给前向控制方法
    • US20110087340A1
    • 2011-04-14
    • US12920385
    • 2009-02-26
    • Noriaki HiroseHiromu HiraiKenta Seki
    • Noriaki HiroseHiromu HiraiKenta Seki
    • G05B13/02
    • G05B11/36G05B19/19G05B2219/43178
    • In a case where a position command path for a control position of a load 5 that is equivalent to a moving object is set by issuing a position command Rc(z), a gain for one of a high-frequency component, a specified frequency, and a specified frequency width is constrained. This means that a resonant frequency can be constrained, and that after the position command Rc(z) arrives at a target position, a position detection signal Y(z) can also arrive at the target position in a set number of steps. It is therefore possible to perform positioning at high speed and with high precision by constraining a resonance mode of a mechanism that includes the moving object, and a feed-forward control can be performed that meets target positioning times that are set for various types of operating patterns.
    • 在通过发出位置指令Rc(z)来设定与运动物体相当的载荷5的控制位置的位置指令路径的情况下,将高频分量,规定频率, 并且限制了指定的频率宽度。 这意味着可以限制谐振频率,并且在位置指令Rc(z)到达目标位置之后,位置检测信号Y(z)也可以以设定的步数到达目标位置。 因此,可以通过约束包括移动体的机构的共振模式,以高速,高精度地进行定位,并且可以执行前馈控制,该前馈控制满足针对各种操作设定的目标定位时间 模式。
    • 8. 发明授权
    • Positioning control system for moving element and laser drilling machine
    • 移动元件和激光钻孔机定位控制系统
    • US08872064B2
    • 2014-10-28
    • US11707153
    • 2007-02-16
    • Takashi OnoSouichi ToyamaYaichi OkuboHiromu Hirai
    • Takashi OnoSouichi ToyamaYaichi OkuboHiromu Hirai
    • B23K26/00G05B13/02G05B11/18G05B19/23
    • G05B19/231G05B2219/41029G05B2219/41127G05B2219/45139
    • A positioning control system for positioning a moving element on a basis of position command data is provided with a feedback loop. The system is also provided with a loop gain modifier for determining a loop gain, which is to be used in a following positioning operation, on a basis of a difference between an amount of overshoot measured in a current positioning operation and a predetermined tolerance or on a basis of a difference between an amount of overshoot measured in a current positioning operation and a first predetermined tolerance and a difference between an amount of undershoot measured in the current positioning operation and a second predetermined tolerance. The first and second tolerances may preferably be the same in absolute value. The moving element may specifically be a steerable mirror for drilling holes in a work by reflecting a laser beam. Also disclosed is a laser drilling machine including the system.
    • 基于位置指令数据定位移动元件的定位控制系统具有反馈回路。 该系统还设置有环路增益修正器,用于基于在当前定位操作中测量的过冲量与预定公差之间的差异或者在预定公差上基于在随后的定位操作中使用的环路增益来确定环路增益, 在当前定位操作中测量的过冲量与第一预定公差之间的差异与在当前定位操作中测量的下冲量之差与第二预定公差之间的差的基础。 第一和第二公差可以优选地具有相同的绝对值。 移动元件可以具体地是用于通过反射激光束在工件中钻孔的可操纵镜。 还公开了一种包括该系统的激光钻孔机。
    • 9. 发明授权
    • Rotary information recording/reproducing apparatus carriage actuator
arrangement
    • 旋转信息记录/再现装置滑架致动装置
    • US5486965A
    • 1996-01-23
    • US198593
    • 1994-02-18
    • Takeshi YoshidaHideaki AmanoTakashi KohnoKenji MoriTakashi YoshidaHiromu Hirai
    • Takeshi YoshidaHideaki AmanoTakashi KohnoKenji MoriTakashi YoshidaHiromu Hirai
    • G11B21/02G11B21/08H02K41/035G11B5/55
    • G11B21/083H02K41/0358
    • A rotary information recording/reproducing apparatus has a carriage rotatable by the first and second driving coils about an axis that moves an information recording/reproducing head radially to an associated recording disk for head positioning relative to the disk. The angle between a line connecting the center of the first driving coil and the center of the carriage pivot shaft and a line connecting the head and the center of the carriage pivot shaft is set to be not greater than 90 degrees while the angle formed between the first and second driving coils about the center of the carriage pivot shaft is within the range of from 100 degrees to 150 degrees, whereby reduction in the size and thickness of the apparatus can be achieved. A magnet-yoke assembly, which is subject to a reaction force, is mounted to a base by sheet springs and reaction-force damping members interposed therebetween so that the magnet-yoke assembly is independent from and infinitesimally rotatable relative to the base. The provision of the two driving coils and the reaction-force damping members effectively prevents the carriage pivot system and the disk spindle from being excited by the reaction force to thereby assure a high-speed and highly-accurate head positioning.
    • 旋转信息记录/再现装置具有可绕第一和第二驱动线圈旋转的托架,该托架围绕将信息记录/再现头径向移动到相关联的记录盘的轴线相对于盘进行头部定位。 连接第一驱动线圈的中心的线与滑架枢轴的中心之间的角度以及连接头部和滑架枢轴的中心的线被设定为不大于90度,同时形成在 围绕托架枢轴的中心的第一和第二驱动线圈在100度至150度的范围内,从而可以实现装置的尺寸和厚度的减小。 受到反作用力的磁轭组件通过板簧和反作用力阻尼构件安装到基座上,使得磁轭组件相对于基座独立于和无限可旋转。 提供两个驱动线圈和反作用力阻尼构件有效地防止滑架枢转系统和盘主轴被反作用力激励,从而确保高速和高准确的头部定位。