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1.发明授权
公开(公告)号：US5627441A
公开(公告)日：1997-05-06
申请号：US465719
申请日：1995-06-06
申请人： Tetsuji Sakurai , Katsuhiko Kaida
发明人： Tetsuji Sakurai , Katsuhiko Kaida
摘要： This invention relates to a motor drive control apparatus for using, for example, a spindle motor of a magnetic disk system. The inventioned apparatus achieves a motor drive control apparatus of high efficiencies with eliminating dead loss of power consumption and avoiding switching noises.The inventioned apparatus for controlling revolution drive of a motor comprising a motor including a rotor and a plurality of drive coils for defining number of excitation phases for making the rotor one cycle revolution and a current supply means for supplying a plurality of drive currents in a successive order to the plurality coils from a voltage source directly.The inventioned apparatus further includes first detecting means for detecting a rotational position of the rotor in each of the excitation phases, second detecting means for detecting number of revolution of the rotor by using a the detected rotor position signal from the first detecting means and a time setting means for determining a current supply time and a start timing for an excitation for the respective coils in each excitation phase in accordance with a detected difference between the detected number of revolution of the rotor and a predetermined target number of revolution of the rotor.The drive pulse forming circuit generates a drive pulse signal to the current supply means for supplying a plurality of drive currents to the plurality coils in accordance with the determined current supply time and a start timing for each excitation phase.
摘要翻译： 本发明涉及使用例如磁盘系统的主轴电动机的电机驱动控制装置。 本发明的装置实现了高效率的电动机驱动控制装置，消除了功耗的死亡损耗并避免了开关噪声。 本发明的一种用于控制电动机的转速驱动装置，该电动机包括电动机，该电动机包括转子和多个驱动线圈，用于限定使转子产生一个周期旋转的激励相数;以及电流供给装置，用于以连续的方式提供多个驱动电流 从电压源直接到多个线圈。 本发明的装置还包括用于检测每个激励相位中的转子的旋转位置的第一检测装置，用于通过使用来自第一检测装置的检测到的转子位置信号来检测转子的转数的第二检测装置， 用于根据检测到的转子转数与转子的预定目标转数之间的检测到的差异来确定每个激励阶段中的各个线圈的激励的当前供给时间和开始定时的设定装置。 驱动脉冲形成电路根据所确定的电流供应时间和每个激励阶段的开始定时，向电流供应装置产生驱动脉冲信号，以向多个线圈提供多个驱动电流。
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公开(公告)号：US5432414A
公开(公告)日：1995-07-11
申请号：US251645
申请日：1994-05-31
申请人： Tetsuji Sakurai , Katsuhiko Kaida
发明人： Tetsuji Sakurai , Katsuhiko Kaida
摘要： When a sensorless spindle motor having a rotor and a plurality of coils is started, a CPU outputs phase control signals to an excitation phase switching circuit to forcibly rotate the rotor. The CPU detects based on rotor position signals from a rotor position detecting circuit whether or not the rotor is rotated in the forced rotation. As a result, when the rotor is not rotated, the CPU retries the forced rotation. In each retried forced rotation, the CPU decreases the rotational speed of an excitation phase of each coil. The CPU may also execute the forced rotation after the rotor is aligned to an arbitrary position. When the rotor is not rotated in the forced rotation, the CPU retries the forced rotation. In each retried forced rotation, the CPU changes the excitation start phase.
摘要翻译： 当具有转子和多个线圈的无传感器主轴电机开始时，CPU将相位控制信号输出到激励相位切换电路，以强制旋转转子。 CPU基于来自转子位置检测电路的转子位置信号来检测转子是否在强制旋转中旋转。 结果，当转子不旋转时，CPU重试强制旋转。 在每次重试强制旋转中，CPU降低每个线圈的激励相位的转速。 在转子对准任意位置之后，CPU也可执行强制旋转。 当转子在强制旋转中不旋转时，CPU重试强制旋转。 在每次重试强制旋转中，CPU改变激励开始阶段。
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3.发明授权Current mirror circuit constituted by FET (field effect transistor) and control system using the same 失效电流镜电路由FET（场效应晶体管）和使用其的控制系统组成
公开(公告)号：US5585701A
公开(公告)日：1996-12-17
申请号：US351131
申请日：1994-11-30
CPC分类号： H02P6/085 , G01R19/0092 , H02P29/40 , G01R31/42
摘要： A circuit for generating a mirror current is provided, separately from a circuit for supplying a drive current. The mirror current generating circuit generates a mirror current of a predetermined ratio to the generated drive current. A circuit for detecting a current detects the mirror current. On the basis of the detected mirror current, the operation of a predetermined FET is controlled, and the amount of the drive current to be supplied to a motor is controlled. Thus, a decrease in the drive current due to a current source-side voltage loss can be prevented. In addition, power consumption due to current detection can be reduced, and as a result the drive current can be supplied efficiently.
摘要翻译： 与用于提供驱动电流的电路分开地提供用于产生镜电流的电路。 反射镜电流产生电路产生与所产生的驱动电流相关的预定比率的反射镜电流。 用于检测电流的电路检测反射镜电流。 基于检测到的反射镜电流，控制预定FET的操作，并且控制供给到电动机的驱动电流的量。 因此，可以防止由于电流源侧电压损失引起的驱动电流的降低。 此外，可以减少由于电流检测引起的功耗，结果可以有效地提供驱动电流。
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4.发明授权Method and apparatus for positioning head on the basis of premeasured amount of displacement 失效基于预先测量的位移量来定位头的方法和装置
公开(公告)号：US5051851A
公开(公告)日：1991-09-24
申请号：US443216
申请日：1989-11-30
申请人： Tetsuji Sakurai
发明人： Tetsuji Sakurai
CPC分类号： G11B5/5526
摘要： The magnetic disk apparatus having improved tracking performance, includes a head for accessing a magnetic disk which is rotated, a displacement detector, a head position controller, a table and a controller. The displacement detector detects an amount of displacement of the head from a designated track of the magnetic disk, based on a signal through the head from servo data associated with the designated track and generating displacement data from the displacement amount. The head position controller controls a position of the head in a radial direction of the magnetic disk in response to an input position control instruction. The table stores a plurality of disk-dependent displacement data. The controller reads out disk-dependent displacement data from the table in accordance with the designated track and outputting the position control instruction to the head position controller in accordance with the displacement data from the displacement detector and the disk-dependent displacement data.
摘要翻译： 具有改善的跟踪性能的磁盘装置包括用于访问旋转的磁盘的磁头，位移检测器，磁头位置控制器，工作台和控制器。 位移检测器基于从与指定轨迹相关联的伺服数据通过头部的信号来检测磁头从磁盘的指定轨道的位移量，并从位移量产生位移数据。 头位置控制器响应于输入位置控制指令控制磁头在磁盘的径向方向上的位置。 该表存储多个与磁盘相关的位移数据。 控制器根据指定轨迹从表中读出与磁盘相关的位移数据，并根据来自位移检测器的位移数据和与磁盘相关的位移数据将位置控制指令输出到头位置控制器。
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5.发明授权
公开(公告)号：US4907107A
公开(公告)日：1990-03-06
申请号：US250857
申请日：1988-09-29
申请人： Tetsuji Sakurai
发明人： Tetsuji Sakurai
CPC分类号： G11B5/59611 , G11B5/5547
摘要： A magnetic disk driving apparatus comprises a driving section for driving a magnetic head on a destination track, in response to an input drive instruction, a detecting section for detecting peak values of signal components corresponding to servo data read out from the magnetic disk by the magnetic head, and a controller for generating a drive instruction in accordance with a plurality of selected peak values of the detected peak values to output the generated instruction to said driving section.
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公开(公告)号：US5327052A
公开(公告)日：1994-07-05
申请号：US857963
申请日：1992-03-26
CPC分类号： H02P6/20
摘要： When a brushless DC (direct current) motor is started to rotate a rotor, a normal current value is set and then a motor drive current corresponding to the set normal current value is supplied to the brushless DC motor. If the brushless DC motor is not started by this motor drive current, the current value to be set is increased at a desired rate, and a motor drive current corresponding to the increased current value is supplied to the brushless DC motor. That is, the motor drive current corresponding to the current value increased at a desired rate is sequentially supplied to the brushless DC motor until the brushless DC motor has started.
摘要翻译： 当开始无刷DC（直流）电动机转动转子时，设定正常电流值，然后将与设定的正常电流值对应的电动机驱动电流提供给无刷直流电动机。 如果通过该电动机驱动电流不起动无刷直流电动机，则要设定的电流值以期望的速率增加，并且与增加的电流值相对应的电动机驱动电流被提供给无刷直流电动机。 也就是说，对应于以所需速率增加的电流值的电动机驱动电流被顺序提供给无刷直流电动机，直到无刷直流电动机起动为止。
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7.发明授权Method and apparatus for determining track position of a head on a recording medium 失效用于确定磁头在记录介质上的磁道位置的方法和装置
公开(公告)号：US5146374A
公开(公告)日：1992-09-08
申请号：US337100
申请日：1989-04-12
申请人： Tetsuji Sakurai
发明人： Tetsuji Sakurai
CPC分类号： G11B5/5526
摘要： An access controller for a recording medium, said recording medium including a plurality of track blocks, each of which includes a plurality of tracks, including a generating section including a head, for reading out servo patterns recorded on the recording medium, and for generating servo data from the readout servo patterns, the servo patterns being associated with the tracks, a storage section for storing previous position data and movement amount data, the previous block-in position data representing a previous track position of said head in a current track block of the track blocks, and the movement amount data representing a number of tracks between the previous track position and a track position previous to the previous track position, and a determination section for selectively determining in accordance with the servo data current block-in position data from at least one of the servo data generated by the generating section and the previous block-in position data and the movement amount data stored in the storage section.
摘要翻译： 一种用于记录介质的存取控制器，所述记录介质包括多个轨道块，每个轨道块包括多个轨道，每个轨道包括包括头部的生成部分，用于读出记录在记录介质上的伺服模式，并用于产生伺服 来自读出伺服模式的数据，伺服模式与轨道相关联，存储部分用于存储先前的位置数据和移动量数据，先前的进入位置数据表示所述头部在当前轨道块中的先前轨道位置 轨道块和表示前一轨道位置和先前轨道位置之前的轨道位置之间的轨道数的移动量数据，以及确定部分，用于根据伺服数据选择性地确定当前块入位置数据， 由生成部生成的伺服数据中的至少一个和先前的块入位置数据和移动 存储在存储部中的量数据。
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8.发明授权Method and apparatus for automatic gain control amplifier adjustment for a magnetic medium 失效用于磁介质的自动增益控制放大器调整的方法和装置
公开(公告)号：US5373403A
公开(公告)日：1994-12-13
申请号：US827623
申请日：1992-01-29
CPC分类号： G11B19/04 , G11B19/02 , G11B5/5534
摘要： In a sector servo type hard-disk apparatus, in the case where a recording medium is not manufacture-formatted, gain control data is written/read in/from a CSS zone of the recording medium after power is turned on and before the first seek is executed. The write/read of the gain control data in/from the CSS zone is also executed in accordance with a peak level of an output signal from an AGC amplifier.
摘要翻译： 在扇区伺服型硬盘装置中，在记录介质不是制造格式化的情况下，增益控制数据在电源接通之后和在第一次寻找之前从记录介质的CSS区域写入/读取 被执行。 根据来自AGC放大器的输出信号的峰值电平，还对来自CSS区域的增益控制数据进行写入/读出。
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9.发明授权
公开(公告)号：US5206567A
公开(公告)日：1993-04-27
申请号：US750413
申请日：1991-08-27
申请人： Tetsuji Sakurai , Hideo Masaki , Katsuhiko Kaida
发明人： Tetsuji Sakurai , Hideo Masaki , Katsuhiko Kaida
摘要： When a sensorless and brushless DC motor is started, the rotor having a magnet is positioned by first exciting one pair of motor coils and then exciting another pair motor coils. The excitation of the motor coils is repeated until the rotor stops vibrating. Further, the positions of the magnetic poles of the rotor are detected by comparing the back electromotive force produced in each motor coil with the voltage generated in common to all motor coils. The rotation speed of the rotor is acquired from both the positions of the magnetic poles and the one cycle period of a signal representing the position of the rotor. A suitable delay time corresponding to the acquired rotation speed is determined, and the excitation phases are switched in accordance with the suitable delay time.
摘要翻译： 当无传感器和无刷直流电动机启动时，具有磁体的转子通过首先激励一对电动机线圈然后激励另一对电动机线圈来定位。 重复电动机线圈的激励，直到转子停止振动。 此外，通过将每个电动机线圈中产生的反电动势与对所有电动机线圈共同产生的电压进行比较来检测转子的磁极的位置。 转子的旋转速度从表示转子位置的信号的磁极位置和一个周期的两个位置获得。 确定对应于所获取的转速的合适的延迟时间，并且根据适当的延迟时间切换励磁相位。
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