公开(公告)号：US06424106B1

公开(公告)日：2002-07-23

申请号：US09820450

申请日：2001-03-29

申请人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Hideki Nishino

发明人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Hideki Nishino

IPC分类号： H02P602

摘要： FET power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings. A voltage detecting part compares terminal voltages of the three-phase windings and produces a detected pulse signal in response to a comparison result. A state shifting part and an activation control part control active periods of the FET power transistors in response to the detected pulse signal. A commanding part produces a command signal in response to an output pulse signal of the voltage detecting means. A switching operation block produces a switching pulse signal in response to a comparison result of a current-detection signal with the command signal, and causes at least an FET power transistor of the power supplying part to perform high-frequency switching in response to the switching pulse signal. The state shifting part produces a timing signal after an adjust time from the detection of the detected pulse signal and shift-holds a holding state in response to the timing signal. The state shifting part changes the adjust time smaller in case that the command signal is larger than a predetermined value, thereby making the product value of the adjust time and the rotational speed smaller in the case.

公开(公告)号：US06586902B2

公开(公告)日：2003-07-01

申请号：US09912569

申请日：2001-07-25

申请人： Makoto Gotou ,  Hideaki Mori ,  Masaaki Ochi

发明人： Makoto Gotou ,  Hideaki Mori ,  Masaaki Ochi

IPC分类号： G05B1101

CPC分类号： G11B19/28 ,  G11B5/012

摘要： A disk drive apparatus reproduces an information signal from a disk and/or records an information signal on the disk. FET power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings so as to rotate the disk. A voltage detecting part compares terminal voltages of the three-phase windings and produces a detected pulse signal in response to a comparison result. An activation operation block controls active periods of the FET power transistors in response to the detected pulse signal. A commanding part produces a command signal in response to an output pulse signal of the voltage detecting part. A switching operation block produces a switching pulse signal in response to a comparison result of a current-detection signal with the command signal, and causes at least an FET power transistor of the power supplying part to perform high-frequency switching in response to the switching pulse signal. The switching operation block changes a timing of the switching pulse signal in response to detection of the detected pulse signal so that the voltage detecting part can accurately achieve the next detection of the detected pulse signal. Further, an excellent speed control of the disk can be achieved by the accurate output pulse signal of the voltage detecting part.

摘要翻译： 磁盘驱动装置从盘重放信息信号和/或在盘上记录信息信号。 供电部的FET功率晶体管执行高频开关动作，并形成到三相绕组的电流路径，以使盘旋转。 电压检测部分比较三相绕组的端电压，并根据比较结果产生检测的脉冲信号。 激活操作块响应于检测到的脉冲信号来控制FET功率晶体管的有效周期。 指令部分响应于电压检测部分的输出脉冲信号产生指令信号。 开关操作块响应于具有指令信号的电流检测信号的比较结果产生开关脉冲信号，并且使至少一个供电部的FET功率晶体管响应于开关而进行高频开关 脉冲信号。 开关操作块响应于检测到的脉冲信号的检测而改变开关脉冲信号的定时，使得电压检测部分可以准确地实现检测到的脉冲信号的下一检测。 此外，可以通过电压检测部分的精确的输出脉冲信号来实现盘的极好的速度控制。

公开(公告)号：US06566827B2

公开(公告)日：2003-05-20

申请号：US10005955

申请日：2001-11-08

申请人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Shingo Fukamizu ,  Susumu Yamamoto

发明人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Shingo Fukamizu ,  Susumu Yamamoto

IPC分类号： H02K2300

CPC分类号： G11B19/20 ,  H02P6/085

摘要： In a disk drive apparatus of the present invention, power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings so as to rotate a disk, a position detecting part produces a position signal which responds with terminal voltages of the three-phase windings, an activation operation part controls active periods of the power transistors in response to an output signal of the position detecting part, a commanding part produces a command signal in response to an output pulse signal of the position detecting part, and a switching operation block produces a switching pulse signal in response to a comparison result of a current detection signal with the command signal. The activation operation part produces a slew-rate switching signal which responds with the switching pulse signal, and causes at least a power transistor of the power supplying part to follow the slew-rate switching signal, thereby executing high-frequency switching of the power transistor in response to the slew-rate switching signal.

公开(公告)号：US06255789B1

公开(公告)日：2001-07-03

申请号：US09489107

申请日：2000-01-21

申请人： Masaaki Ochi ,  Makoto Gotou ,  Hideaki Mori

发明人： Masaaki Ochi ,  Makoto Gotou ,  Hideaki Mori

IPC分类号： H02P706

CPC分类号： H02P6/10 ,  H02P6/085

摘要： In the present invention, a Q-phase motor, which electronically switches current paths to plural-phase windings, comprises waveform shaping signal producing device for producing Q-phase waveform shaping signals having a conduction width larger than an electric angle of 360/Q degrees and superimposed signal producing device for superimposing signals to the waveform shaping signals. The superimposed signal producing device comprises superimposed timing producing device for producing superimposed timing signals which are output in a period shorter than a conduction period of the waveform shaping signals in a conduction period of the waveform shaping signals, synchronous rectifying control device for controlling the timing for synchronous rectification, and superimposed signal composing device for composing the signals output from the synchronous rectifying control device with the superimposed timing signals.

摘要翻译： 在本发明中，将电流转换为多相绕组的Q相电动机包括波形整形信号产生装置，用于产生导通宽度大于360°/ Q度的电角度的Q相波形整形信号 以及用于将信号叠加到波形整形信号的叠加信号产生装置。 叠加信号产生装置包括叠加定时产生装置，用于在波形整形信号的导通周期中产生在比波形整形信号的导通周期短的时间内输出的叠加定时信号，用于控制波形整形信号的定时的同步整流控制装置 同步整流和叠加信号组合装置，用于组合来自同步整流控制装置的信号与叠加的定时信号。

公开(公告)号：US07126301B2

公开(公告)日：2006-10-24

申请号：US10530442

申请日：2003-10-22

申请人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

发明人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A motor driver drives a motor composed of a rotor and plural-phase windings that generate a magnetic field for rotating the rotor, including: a plurality of transistors that operate as switches for supplying current to the windings; a position detector operable to detect a rotational position of the rotor, based on a terminal voltage of each winding; and a switching controller operable to have performed a switching method to turn the transistors to an ON state or to an OFF state for controlling the rotor at the predetermined speed by means of the position detector, wherein the switching controller further controls so as to force each of the transistors into the OFF state for a predetermined duration in a predetermined cycle, and the position detector detects only while the switching controller forcedly keeps the transistor in the OFF state.

摘要翻译： 电动机驱动器驱动由转子和多相绕组组成的电动机，其产生用于使转子旋转的磁场，包括：作为用于向绕组供电的开关的多个晶体管; 位置检测器，其可操作以基于每个绕组的端子电压检测转子的旋转位置; 以及开关控制器，其可操作以执行切换方法，以通过所述位置检测器将所述晶体管转换到导通状态或关闭状态，以便以所述预定速度控制所述转子，其中所述开关控制器进一步控制以迫使每个 的晶体管在预定的周期内保持预定的持续时间，并且位置检测器仅在开关控制器强制将晶体管保持在截止状态时才检测。

公开(公告)号：US07095195B2

公开(公告)日：2006-08-22

申请号：US10812289

申请日：2004-03-29

申请人： Masaki Tagome ,  Hideaki Mori ,  Hisanori Nagase ,  Makoto Gotou

发明人： Masaki Tagome ,  Hideaki Mori ,  Hisanori Nagase ,  Makoto Gotou

IPC分类号： H02P7/00

CPC分类号： G11B19/20 ,  G11B19/2054

摘要： In a motor and a disk drive apparatus in accordance with the present invention, a position detecting part 30 comprises a detection signal switching circuit 39A, a noise elimination circuit 38 and a detection circuit 39B, and the detection signal switching circuit 39A is configured to output an inverted detection signal obtained by logically inverting a detection signal until the rotation speed reaches a predetermined rotation speed after the beginning of starting or until a position detection pulse signal FG is detected a predetermined number of times; position detection operation is carried out only during the ON operation of PWM, whereby PWM sensorless starting is carried out.

摘要翻译： 在根据本发明的电动机和磁盘驱动装置中，位置检测部分30包括检测信号切换电路39A，噪声消除电路38和检测电路39B，检测信号切换电路39A是 被配置为输出通过逻辑反转检测信号而获得的反转检测信号，直到开始起动之后转速达到预定转速，或者直到检测到位置检测脉冲信号FG为止预定次数; 仅在PWM的ON操作期间执行位置检测操作，由此执行PWM无传感器启动。

公开(公告)号：US20060097674A1

公开(公告)日：2006-05-11

申请号：US10530442

申请日：2003-10-22

申请人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

发明人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

IPC分类号： H02P7/06

CPC分类号： H02P6/182

摘要： A motor driver drives a motor composed of a rotor and plural-phase windings that generate a magnetic field for rotating the rotor, including: a plurality of transistors that operate as switches for supplying current to the windings; a position detector operable to detect a rotational position of the rotor, based on a terminal voltage of each winding; and a switching controller operable to have performed a switching method to turn the transistors to an ON state or to an OFF state for controlling the rotor at the predetermined speed by means of the position detector, wherein the switching controller further controls so as to force each of the transistors into the OFF state for a predetermined duration in a predetermined cycle, and the position detector detects only while the switching controller forcedly keeps the transistor in the OFF state.

公开(公告)号：US20060028161A1

公开(公告)日：2006-02-09

申请号：US11191853

申请日：2005-07-27

申请人： Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima ,  Hideki Nishino ,  Taishi Iwanaga

发明人： Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima ,  Hideki Nishino ,  Taishi Iwanaga

IPC分类号： H02P7/00

CPC分类号： H02P6/10 ,  H02P6/18 ,  H02P2209/07

摘要： A motor driving apparatus has a driver circuit configuration capable of individually adjusting three phase coil currents. Coil current waveforms are formed to have a total of three phase shaft direction forces to be zero in compliance with predetermined mathematical expressions, and thus, three phase coil current profiles can be made independent of one another, and vibration-causing factors attributed to the fact that a certain phase is in an non-energized state are corrected by adjusting the current profiles of the other phases. Consequently, the vibration and the noise can be reduced.

摘要翻译： 电动机驱动装置具有能够分别调节三相线圈电流的驱动电路结构。 线圈电流波形形成为具有符合预定数学表达式的总共三相轴方向力为零，因此可以使三相线圈电流分布彼此独立，并且由于事实引起的振动引起因素 通过调整其它相的电流曲线来校正某一相位处于非通电状态。 因此，可以降低振动和噪音。

公开(公告)号：US07088067B2

公开(公告)日：2006-08-08

申请号：US11191853

申请日：2005-07-27

申请人： Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima ,  Hideki Nishino ,  Taishi Iwanaga

发明人： Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima ,  Hideki Nishino ,  Taishi Iwanaga

IPC分类号： H02P7/00

CPC分类号： H02P6/10 ,  H02P6/18 ,  H02P2209/07

摘要： A motor driving apparatus has a driver circuit configuration capable of individually adjusting three phase coil currents. Coil current waveforms are formed to have a total of three phase shaft direction forces to be zero in compliance with predetermined mathematical expressions, and thus, three phase coil current profiles can be made independent of one another, and vibration-causing factors attributed to the fact that a certain phase is in an non-energized state are corrected by adjusting the current profiles of the other phases. Consequently, the vibration and the noise can be reduced.

公开(公告)号：US20140318393A1

公开(公告)日：2014-10-30

申请号：US13979484

申请日：2012-09-11

申请人： Hiroki Kobayashi ,  Toshiyuki Murakami ,  Hideaki Mori ,  Akira Maeda

发明人： Hiroki Kobayashi ,  Toshiyuki Murakami ,  Hideaki Mori ,  Akira Maeda

IPC分类号： B41F15/44

CPC分类号： B41F15/44 ,  B41F15/0881 ,  B41F15/12 ,  B41F15/36 ,  B41F15/42 ,  B41P2215/50 ,  H05K3/1233 ,  H05K2203/163

摘要： A light receiving section 27b receives a measurement beam, which is cast from a light projection section 27a and partially blocked by cream solder 19 scraped up by a squeegee 16, whereby a sensor 27 measures a one-dimensional size of a predetermined region of a cross sectional profile of the cream solder 19 as a cross sectional paste length and takes the cross sectional paste length as an index for an amount of residual cream solder 19. The amount of residual cream solder 19 can be numerically grasped at all times, so that versatility and accuracy in detecting the amount of residual cream solder 19 can be assured.

摘要翻译： 光接收部分27b接收测量光束，该光束从光投影部分27a铸造并被由刮板16刮去的奶油焊膏19部分阻挡，由此传感器27测量十字形的预定区域的一维尺寸 膏状焊料19的截面轮廓作为横截面糊料长度，并以横截面糊料长度作为残留奶油焊膏19的量的指标。残留奶油焊料19的量可以在任何时候被数值地掌握，从而通用性 并且可以确保检测残留的膏状焊料19的量的精度。