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    • 5. 发明申请
    • Apparatus and method compensating mechanical tolerance of brushless direct current motor and related disk drive
    • 无刷直流电机和相关磁盘驱动器的装置和方法补偿机械公差
    • US20070159709A1
    • 2007-07-12
    • US11650420
    • 2007-01-08
    • Nam-guk KimKyoung-whan Oh
    • Nam-guk KimKyoung-whan Oh
    • G11B15/46
    • G11B19/28
    • Provided are an apparatus and method for controlling a motor which compensates for a mechanical tolerance of the motor in a case where a feedback sampling frequency increases in order to more precisely control a brushless DC motor. The apparatus for compensating the mechanical tolerance of the brushless DC motor includes: a speed controller calculating a speed error that is a difference between a motor speed measured in control sections and a reference speed using a back electromotive force generated by the motor, and generating a motor control input signal using the speed error of the control section; a moving average calculator calculating a moving average value of the motor control input signals in a predetermined moving average section including recently generated motor control input signal whenever the motor control input signals are generated; and a motor driver generating an electric current for driving the motor corresponding to the moving average value.
    • 提供一种用于控制电动机的装置和方法,其在反馈采样频率增加以更精确地控制无刷DC电动机的情况下补偿电动机的机械容限。 用于补偿无刷直流电动机的机械公差的装置包括:速度控制器,计算使用由电动机产生的反电动势在控制部中测量的电动机速度与参考速度之差的速度误差, 电机控制输入信号采用控制部分的速度误差; 移动平均计算器,每当产生电动机控制输入信号时,计算包括最近生成的电动机控制输入信号的预定移动平均部分中的电动机控制输入信号的移动平均值; 以及电动机驱动器,其根据移动平均值产生用于驱动电动机的电流。
    • 6. 发明授权
    • Noise-resistive, burst-mode receiving apparatus and a method for recovering a clock signal and data therefrom
    • 抗噪声突发模式接收装置以及从中恢复时钟信号和数据的方法
    • US07177381B2
    • 2007-02-13
    • US10179400
    • 2002-06-26
    • Yu-kun KimSeung-woo LeeWoo-young ChoiNam-guk KimHyun-surk Ryu
    • Yu-kun KimSeung-woo LeeWoo-young ChoiNam-guk KimHyun-surk Ryu
    • H03D3/24
    • H03L7/0805H03L7/06H04L7/033
    • A noise-resistive, burst-mode receiving apparatus including a voltage control signal generator for multiplying a frequency of a system clock signal and generating a voltage control signal having a level that corresponds to the multiplied frequency; a reset signal generator for delaying an irregular input signal in the unit of a packet, in response to the voltage control signal, performing an exclusive OR operation on the delayed and input signals, and outputting the result as a reset signal; a clock signal generator for generating a signal having a level that is changed at the middle point of each bit included in the packet as a recovered clock signal in response to the reset signal and the voltage control signal and outputting the recovered clock signal; and an output buffer for buffering the input signal and outputting the buffered signal as recovered data in response to the recovered clock signal.
    • 一种抗噪声突发模式接收装置,包括:电压控制信号发生器,用于对系统时钟信号的频率进行乘法,并产生具有与倍频相对应的电平的电压控制信号; 复位信号发生器,响应于电压控制信号,以分组为单位延迟不规则输入信号,对延迟和输入信号执行异或运算,并将结果作为复位信号输出; 时钟信号发生器,用于响应于复位信号和电压控制信号,产生具有在分组中包含的每个位的中点处被改变的电平作为恢复的时钟信号的信号,并输出恢复的时钟信号; 以及输出缓冲器,用于缓冲输入信号并响应于恢复的时钟信号将缓冲信号作为恢复数据输出。
    • 8. 发明授权
    • Disturbance compensation determination apparatus, a related method, a computer-readable medium storing a computer program related to the method, and a disk drive comprising the apparatus
    • 干扰补偿确定装置,相关方法,存储与该方法相关的计算机程序的计算机可读介质和包括该装置的盘驱动器
    • US07777982B2
    • 2010-08-17
    • US11772959
    • 2007-07-03
    • Nam-guk KimSung-won ParkSang-hoon Chu
    • Nam-guk KimSung-won ParkSang-hoon Chu
    • G11B5/596
    • G11B19/042G11B5/5582G11B5/596
    • A disturbance compensation determination apparatus, a related method, a computer readable medium storing a computer program related to the method, and a disk drive comprising the apparatus are provided. The disturbance compensation determination apparatus includes a disturbance observer (DOB) receiving a control input signal and a servo output signal of a plant, wherein the DOB calculates and outputs a current estimated disturbance value. The apparatus also includes a disturbance evaluation unit selectively changing a current disturbance compensation (DC) mode, wherein selectively changing the current DC mode comprises evaluating an accumulated estimated disturbance value in accordance with a condition corresponding to the current DC mode. In addition, the apparatus includes a switching unit selectively providing the current estimated disturbance value to a control loop of the plant in accordance with the current DC mode as selectively changed by the disturbance evaluation unit.
    • 提供了一种干扰补偿确定装置,相关方法,存储与该方法相关的计算机程序的计算机可读介质和包括该装置的盘驱动器。 干扰补偿确定装置包括接收工厂的控制输入信号和伺服输出信号的干扰观测器(DOB),其中DOB计算并输出当前估计的扰动值。 该装置还包括选择性地改变电流干扰补偿(DC)模式的干扰评估单元,其中选择性地改变当前DC模式包括根据对应于当前DC模式的条件来评估累积的估计干扰值。 此外,该装置包括切换单元,其根据由干扰评估单元选择性地改变的当前DC模式,选择性地将电流估计干扰值提供给设备的控制回路。
    • 10. 发明申请
    • Method, medium, and apparatus controlling track seek in a recording and/or reproducing apparatus
    • 在记录和/或再现装置中控制轨迹搜索的方法,介质和装置
    • US20060119978A1
    • 2006-06-08
    • US11291926
    • 2005-12-02
    • Nam-guk KimSang-hoon ChuCheol-hoon Park
    • Nam-guk KimSang-hoon ChuCheol-hoon Park
    • G11B5/596
    • G11B5/59605G11B5/5526
    • A method, medium, and apparatus controlling a hard disk drive, and more particularly, a method, medium, and apparatus controlling a track seek of a hard disk drive, where the hard disk drive compensates for a gain distortion and a phase delay caused by a notch filter and a VCM driver using a sinewave acceleration trajectory. According to the method of controlling a track seek of a hard disk drive, an ideal sinewave for obtaining a position y*(n), a velocity v*(n), and an acceleration a*(n), according to a sinewave acceleration trajectory, and a sinewave indicating a gain distortion and a phase delay may be integrated and a VCM driving current u(n) can be generated by the integrated sinewave for compensating for gain distortion and phase delay, compensating for a value C(j2πf) of the gain distortion and the phase delay caused by the notch filter and the VCM driver.
    • 一种控制硬盘驱动器的方法,介质和装置,更具体地说,一种控制硬盘驱动器的磁道寻道的方法,介质和装置,其中硬盘驱动器补偿增益失真和相位延迟 陷波滤波器和使用正弦波加速轨迹的VCM驱动器。 根据控制硬盘驱动器的轨迹搜索的方法,根据正弦波加速度获得用于获得位置y *(n),速度v *(n)和加速度a *(n)的理想正弦波 轨迹和指示增益失真和相位延迟的正弦波可以被积分,并且可以由积分正弦波产生VCM驱动电流u(n),以补偿增益失真和相位延迟,补偿C(j2pif)的值C 由陷波滤波器和VCM驱动器引起的增益失真和相位延迟。