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31. 发明授权

US07411365B2 Drive control device of motor and a method of start-up 失效
标题翻译：电机驱动控制装置及启动方式
公开(公告)号：US07411365B2
公开(公告)日：2008-08-12
申请号：US11248305
申请日：2005-10-13
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02K29/06
CPC分类号： H02P1/46 , H02P6/20
摘要： A drive control device of motor capable of starting up even a motor of such a type that the polarity of induced voltage does not switch every 180° of electrical angle or the polarity, positive or negative, does not occur with accuracy without causing a reverse rotation is provided. In a start-up control of motor, the following operation is performed: a current is passed through any coils in two phases, and the polarity of voltage induced in the non-conducting phase is detected. A conducting phase at start-up is determined based on the detected polarity of induced voltage. The average value of induced voltages in non-conducting phase detected with respect to the coils in respective phases is determined. The average value and the detected induced voltages are compared with each other, and relative polarities are determined from the magnitude relation with the average value to determine a conducting phase at start-up.
摘要翻译：电动机的驱动控制装置能够即使启动这样的电动机，使得感应电压的极性不会每180°电角度或正极性或负极性的极性切换，而不会导致正确的旋转被提供。在马达的启动控制中，执行以下操作：电流以两相通过任何线圈，并且检测在非导通相中感应的电压的极性。基于检测到的感应电压的极性来确定启动时的导通相位。确定相关于各相中的线圈检测到的非导通相中的感应电压的平均值。将平均值和检测到的感应电压进行比较，并根据与平均值的大小关系确定相对极性，以确定启动时的导通阶段。

32. 发明授权

US07088063B2 Motor drive device and integrated circuit device for motor driving 失效
标题翻译：电机驱动装置和电机驱动集成电路装置
公开(公告)号：US07088063B2
公开(公告)日：2006-08-08
申请号：US10938568
申请日：2004-09-13
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02K21/00 , H02K23/00
CPC分类号： G11B19/28
摘要： A three-phase DC motor output stage including a predriver that supplies drive voltages to power MOSFETs supplies output voltages to three-phase coils, monitors whether each of gate-to-source voltages of the power MOSFETs is greater than or equal to a predetermined voltage and thereby detects a current zero cross, and employs the output of such current zero cross detection in PLL control for controlling energization switching timing and thereby forms drive voltages of 180-degree energization. Lower hooks with a voltage minimum phase as GND and upper hooks with a voltage maximum phase as a source are set as patterns alternately repeated for every electrical angle of 60 degrees. The patterns are expressed in linear approximation to generate sine wave-like drive voltages, thereby causing sine wave-like currents to flow into the three-phase coils.
摘要翻译：包括向功率MOSFET提供驱动电压的预驱动器的三相DC电动机输出级将输出电压提供给三相线圈，监视功率MOSFET的栅极至源极电压中的每一个是否大于或等于预定电压从而检测电流零交叉，并且在PLL控制中采用这种电流过零检测的输出来控制通电切换定时，从而形成180度通电的驱动电压。具有电压最小相位为GND的下钩和以电压最大相位为源的上钩被设置为对于60度的每个电角度交替重复的图案。模式以线性近似表示，以产生正弦波状驱动电压，从而使正弦波状电流流入三相线圈。

33. 发明申请

US20060082336A1 Drive control device of motor and a method of start-up 失效
标题翻译：电机驱动控制装置及启动方式
公开(公告)号：US20060082336A1
公开(公告)日：2006-04-20
申请号：US11248305
申请日：2005-10-13
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02P7/06 , H02P1/18
CPC分类号： H02P1/46 , H02P6/20
摘要： A drive control device of motor capable of starting up even a motor of such a type that the polarity of induced voltage does not switch every 180° of electrical angle or the polarity, positive or negative, does not occur with accuracy without causing a reverse rotation is provided. In a start-up control of motor, the following operation is performed: a current is passed through any coils in two phases, and the polarity of voltage induced in the non-conducting phase is detected. A conducting phase at start-up is determined based on the detected polarity of induced voltage. The average value of induced voltages in non-conducting phase detected with respect to the coils in respective phases is determined. The average value and the detected induced voltages are compared with each other, and relative polarities are determined from the magnitude relation with the average value to determine a conducting phase at start-up.
摘要翻译：电动机的驱动控制装置能够即使启动这样的电动机，使得感应电压的极性不会每180°电角度或正极性或负极性的极性切换，而不会导致正确的旋转被提供。在马达的启动控制中，执行以下操作：电流以两相通过任何线圈，并且检测在非导通相中感应的电压的极性。基于检测到的感应电压的极性来确定启动时的导通相位。确定相关于各相中的线圈检测到的非导通相中的感应电压的平均值。将平均值和检测到的感应电压进行比较，并根据与平均值的大小关系确定相对极性，以确定启动时的导通阶段。

34. 发明授权

US06972918B2 Magnetic disk memory system 有权
标题翻译：磁盘存储系统
公开(公告)号：US06972918B2
公开(公告)日：2005-12-06
申请号：US10448179
申请日：2003-05-30
申请人： Yasuhiko Kokami , Minoru Kurosawa
发明人： Yasuhiko Kokami , Minoru Kurosawa
IPC分类号： G11B5/54 , G11B21/12 , G11B21/22 , G11B21/02
CPC分类号： G11B5/54 , G11B21/12 , G11B21/22
摘要： In a magnetic disk memory device, the shifting speed of the magnetic head in time of power supply interruption is detected, and a voice coil motor is controlled in accordance with the detected shifting speed to enable the head to be shunted safely and promptly. In a magnetic disk memory device having a spindle motor for revolving a magnetic disk, a magnetic head for reading information from the magnetic disk, a voice coil motor for shifting this magnetic head, and a voice coil motor drive circuit for controlling the drive current of the voice coil motor, the shifting speed of the head in time of power supply interruption is detected on the basis of the back electromotive force generating on the coil of the voice coil motor in time of power supply interruption, there are further provided a retract control circuit for generating a current command value for the voice coil motor drive circuit on the basis of the result of detection and a booster circuit for boosting a voltage resulting from the rectification of the back electromotive force generating in the coil of the spindle motor, wherein the voice coil motor drive circuit and the retract control circuit are operated with the voltage boosted by the booster circuit in time of power supply interruption to control the current to be made to flow to the coil of the voice coil motor and thereby to shunt the magnetic head.
摘要翻译：在磁盘存储装置中，检测到电源中断时磁头的移动速度，并且根据检测到的移位速度来控制音圈电动机，使头能够安全，及时地分流。在具有用于旋转磁盘的主轴电动机的磁盘存储装置中，用于从磁盘读取信息的磁头，用于移动该磁头的音圈电动机和用于控制磁头的驱动电流的音圈电动机驱动电路基于在电源中断时在音圈电动机的线圈上产生的反电动势来检测电源中断时的磁头的移动速度，进一步提供音圈电动机，基于检测结果产生音圈电动机驱动电路的电流指令值的电路，以及用于升高由主轴电动机的线圈产生的反电动势的整流产生的电压的升压电路，其中，音圈电机驱动电路和退绕控制电路在电源供电时由升压电路提升的电压进行动作以便控制流向音圈马达的线圈的电流，从而分流磁头。

35. 发明申请

US20050218853A1 Motor drive semiconductor integrated circuit and magnetic disk storage apparatus 有权
标题翻译：电机驱动半导体集成电路和磁盘存储装置
公开(公告)号：US20050218853A1
公开(公告)日：2005-10-06
申请号：US11098644
申请日：2005-04-05
申请人： Yasuhiko Kokami
发明人： Yasuhiko Kokami
IPC分类号： G11B21/08 , G05B11/28 , G11B5/596 , G11B21/10 , G11B25/04 , G11B33/12 , H02P5/00 , H02P25/06
CPC分类号： G11B33/121 , G05B11/28 , G11B5/5547 , G11B25/043
摘要： The Invention provides a motor drive semiconductor integrated circuit for driving and controlling a voice coil motor that can conduct a seek operation, a track follow operation and a settling operation through PWM control, has desired control accuracy and can be produced by a CMOS process. In a voice coil motor drive circuit (200) for executing positioning control of a magnetic head by feedback-controlling a driving current of a voice coil motor (108) for moving a magnetic head (106) over a magnetic disk for reading information from a storage track on the magnetic disk driven for rotation while a read state of the magnetic head is being monitored, head movement control such as a seek operation, a track follow operation etc, of the magnetic head is executed by PWM driving on the basis of a command value from a controller.
摘要翻译：本发明提供了一种用于驱动和控制音圈电动机的电机驱动半导体集成电路，其可以通过PWM控制进行寻道操作，轨道跟随操作和稳定操作，具有期望的控制精度并且可以通过CMOS工艺产生。在用于通过反馈控制音圈电动机（108）的驱动电流来执行磁头的定位控制的音圈电动机驱动电路（200）中，用于使磁头（106）移动到磁盘上，用于从在磁头的读取状态被监视的同时驱动磁盘上的磁盘上的存储轨道，通过PWM驱动来执行磁头的诸如寻道操作，磁道跟随操作等的磁头移动控制，基于来自控制器的命令值。

36. 发明申请

US20050189891A1 Motor drive device and motor drive integrated circuit device 失效
标题翻译：电机驱动装置和电机驱动集成电路装置
公开(公告)号：US20050189891A1
公开(公告)日：2005-09-01
申请号：US11059649
申请日：2005-02-17
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02P6/08 , H02P7/06
CPC分类号： H02P6/28
摘要： A motor drive device which controls a spindle output predriver unit and power MOSFETs of an output stage associated with it to form a PWM signal in such a manner that a detection current formed by a DC shunt resistor and a sense amplifier and a current instruction signal coincide with each other, generates a regenerative signal obtained by giving dead times to the PWM signal, generates an energizing timing signal from the result of BEMF (back electromotive voltage) zero cross detection and generates signals for controlling on/off of power MOSFETs of three phases to thereby drive a three-phase motor, is provided with a switching characteristic adjustment unit which measures a time at which the spindle output is being transitioned and performs such feedback control that the measured time and a designated switching time coincide with each other.
摘要翻译：电机驱动装置，其控制主轴输出预驱动单元和与其相关联的输出级的功率MOSFET以形成PWM信号，使得由DC分流电阻器和感测放大器形成的检测电流和电流指令信号一致彼此产生通过给PWM信号提供死区时间而获得的再生信号，从BEMF（反电动势）零交叉检测的结果产生通电定时信号，并产生用于控制三相功率MOSFET的通/断的信号为了驱动三相电动机，设置有测量主轴输出正在被转换的时间的开关特性调整单元，并且执行测量时间和指定的切换时间彼此一致的反馈控制。

37. 发明申请

US20050067986A1 Motor drive device and integrated circuit device for motor driving 失效
标题翻译：电机驱动装置和电机驱动集成电路装置
公开(公告)号：US20050067986A1
公开(公告)日：2005-03-31
申请号：US10938568
申请日：2004-09-13
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02P6/16 , G11B19/28 , H02P6/10 , H02P5/06
CPC分类号： G11B19/28
摘要： A three-phase DC motor output stage including a predriver that supplies drive voltages to power MOSFETs supplies output voltages to three-phase coils, monitors whether each of gate-to-source voltages of the power MOSFETs is greater than or equal to a predetermined voltage and thereby detects a current zero cross, and employs the output of such current zero cross detection in PLL control for controlling energization switching timing and thereby forms drive voltages of 180-degree energization. Lower hooks with a voltage minimum phase as GND and upper hooks with a voltage maximum phase as a source are set as patterns alternately repeated for every electrical angle of 60 degrees. The patterns are expressed in linear approximation to generate sine wave-like drive voltages, thereby causing sine wave-like currents to flow into the three-phase coils.
摘要翻译：包括向功率MOSFET提供驱动电压的预驱动器的三相DC电动机输出级将输出电压提供给三相线圈，监视功率MOSFET的栅极至源极电压中的每一个是否大于或等于预定电压从而检测电流零交叉，并且在PLL控制中采用这种电流过零检测的输出来控制通电切换定时，从而形成180度通电的驱动电压。具有电压最小相位为GND的下钩和以电压最大相位为源的上钩被设置为对于60度的每个电角度交替重复的图案。模式以线性近似表示，以产生正弦波状驱动电压，从而使正弦波状电流流入三相线圈。

38. 发明授权

US06771033B2 Drive control system for sensor-less motor 失效
标题翻译：无传感器电机驱动控制系统
公开(公告)号：US06771033B2
公开(公告)日：2004-08-03
申请号：US10341342
申请日：2003-01-14
申请人： Yasuhiko Kokami , Kunihiro Kawauchi , Toshiyuki Tsunoda , Reiichi Kimura
发明人： Yasuhiko Kokami , Kunihiro Kawauchi , Toshiyuki Tsunoda , Reiichi Kimura
IPC分类号： H02P600
CPC分类号： H02P6/182 , Y10S388/911
摘要： A drive control system, with PLL control, drives a rotatable multi-phase sensor-less motor by switching a current of a field coil of each phase depending on the rotating phase of the motor. When the motor is driven, a desired phase is selected as a detection phase, and a voltage induced on the coil of the detection phase is detected when power is fed for a predetermined time to the field coils other than the detection phase. A magnetic pole position is detected from the amplitude condition of the detected induced voltage. Based on this detection, the power-feeding phase of the motor drive is determined. Power feeding and pole position detection are performed alternately.
摘要翻译：具有PLL控制的驱动控制系统通过根据电动机的旋转相位切换每相的励磁线圈的电流来驱动可旋转的多相无传感器电动机。当电机被驱动时，选择期望的相位作为检测相位，并且当向除了检测相位之外的励磁线圈供电预定时间时检测在检测相位线圈上感应的电压。从检测到的感应电压的振幅条件检测磁极位置。基于该检测，确定电动机驱动器的供电相位。交替执行供电和极位置检测。

39. 发明授权

US06344721B2 Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatus 有权
公开(公告)号：US06344721B2
公开(公告)日：2002-02-05
申请号：US09818511
申请日：2001-03-28
申请人： Kunio Seki , Toshiyuki Tsunoda , Yasuhiko Kokami , Kunihiro Kawauchi
发明人： Kunio Seki , Toshiyuki Tsunoda , Yasuhiko Kokami , Kunihiro Kawauchi
IPC分类号： H02P540
CPC分类号： H02P6/22
摘要： A pulse current having such a short duration as the rotor does not react is passed through field coils of respective phases of a brushless motor in first and second, mutually opposite, directions sequentially, voltages induced, by the pulse currents in two directions at each of the field coils of the non-conducting phase are combined, the polarity of a combined voltage is detected, and a field coil pair where a current is to be passed to start the motor is determined based on the result of detection for each of field coil of the non-conducting phase.

40. 发明授权

US06340873B2 Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatus 有权
公开(公告)号：US06340873B2
公开(公告)日：2002-01-22
申请号：US09893549
申请日：2001-06-29
申请人： Kunio Seki , Toshiyuki Tsunoda , Yasuhiko Kokami , Kunihiro Kawauchi
发明人： Kunio Seki , Toshiyuki Tsunoda , Yasuhiko Kokami , Kunihiro Kawauchi
IPC分类号： H02P540
CPC分类号： H02P6/22
摘要： A pulse current having such a short duration as the rotor does not react is passed through field coils of respective phases of a brushless motor in first and second, mutually opposite, directions sequentially, voltages induced, by the pulse currents in two directions at each of the field coils of the non-conducting phase are combined, the polarity of a combined voltage is detected, and a field coil pair where a current is to be passed to start the motor is determined based on the result of detection for each of field coil of the non-conducting phase.

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