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1. 发明申请

US20050036228A1 Magnetic disk storage apparatus 审中-公开
标题翻译：磁盘存储装置
公开(公告)号：US20050036228A1
公开(公告)日：2005-02-17
申请号：US10948220
申请日：2004-09-24
申请人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
发明人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
IPC分类号： G11B19/28 , G11B19/20 , G11B19/247 , H02P6/00 , H02P6/08 , H02P6/18 , G11B15/46
CPC分类号： G11B19/20 , G11B19/247 , H02P6/08 , H02P6/28
摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.
摘要翻译：正弦波形的电流可以通过相对较小尺寸的电路通过线圈馈送，从而可以以较小的旋转变化实现高度密集的磁存储，并且可以提供以低噪声水平旋转的电动机的驱动控制电路。三相无刷电动机的一相线圈以全幅度驱动，施加的电压等于源电压，并且其中一相的线圈以逐渐变化的电压驱动，使得正弦波形的电流并且通过反馈控制驱动剩余相的线圈，使得流过所有线圈的总电流成为预定电流值。

2. 发明申请

US20060227448A1 Magnetic disk storage apparatus 审中-公开
公开(公告)号：US20060227448A1
公开(公告)日：2006-10-12
申请号：US11450436
申请日：2006-06-12
申请人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
发明人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
IPC分类号： G11B15/46
CPC分类号： G11B19/20 , G11B19/247 , H02P6/08 , H02P6/28
摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.

3. 发明授权

US07071640B2 Rotation drive control circuit of multiphases direct current motor and the start-up method thereof 失效
标题翻译：多相直流电动机的旋转驱动控制电路及其启动方法
公开(公告)号：US07071640B2
公开(公告)日：2006-07-04
申请号：US10684380
申请日：2003-10-15
申请人： Minoru Kurosawa , Kunihiro Kawauchi , Yasuhiko Kokami
发明人： Minoru Kurosawa , Kunihiro Kawauchi , Yasuhiko Kokami
IPC分类号： H02P6/22
CPC分类号： H02P6/20 , H02M7/5395 , H02M2001/0009 , H02P6/182
摘要： In start-up control of a motor in which currents are caused to flow through any two of three phase coils to detect the polarity of a voltage induced in each de-energized phase, thereby determining the corresponding energized phase at start-up thereof, based on the polarity of the detected induced voltage, the levels of induced voltages are detected in addition to the polarity of the induced voltage for the de-energized phase to thereby determine the relationship between the magnitudes thereof, and the energized phase at the start-up is determined based on the relationship of magnitude between the polarity of each induced voltage and the level thereof. In drive control of a multi-phase DC motor wherein a driver for allowing a drive current to flow through each coil is controlled by PWM control signals, and a sine wave-shaped current is caused to flow through each coil to thereby rotatably drive the motor, positive-phase and negative-phase signals are generated as triangular wave carrier signals for generating the PWM control signals, and the PWM control signal related to the corresponding phase coil of the respective phase coils, to which a voltage of an intermediate level is applied by the driver, is generated using a carrier signal opposite in phase to a triangular wave signal used to generate the PWM control signals for other phase coils.
摘要翻译：在电动机的启动控制中，使电流流过三相线圈中的任意两个电流，以检测在每个去激励相位中感应出的电压的极性，从而基于在其启动时确定相应的通电阶段对于检测到的感应电压的极性，除了去激励相的感应电压的极性之外还检测感应电压的电平，从而确定其大小与启动时的通电阶段之间的关系基于每个感应电压的极性与其电平之间的大小关系确定。在通过PWM控制信号控制用于允许驱动电流流过每个线圈的驱动器的多相直流电动机的驱动控制中，并且使正弦波形电流流过每个线圈从而可旋转地驱动电动机产生正相和负相位信号作为用于产生PWM控制信号的三角波载波信号，以及与施加了中间电平的电压的各相线圈相应的相位线圈有关的PWM控制信号由驱动器使用与用于产生其他相位线圈的PWM控制信号的三角波信号相位相反的载波信号来产生。

4. 发明授权

US06801382B2 Magnetic disk storage apparatus 失效
标题翻译：磁盘存储装置
公开(公告)号：US06801382B2
公开(公告)日：2004-10-05
申请号：US10123245
申请日：2002-04-17
申请人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
发明人： Reiichi Kimura , Yasuhiko Kokami , Kunihiro Kawauchi , Minoru Kurosawa , Kichiya Itagaki
IPC分类号： G11B1546
CPC分类号： H02P6/08 , G11B19/247 , H02P6/28
摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.
摘要翻译：正弦波形的电流可以通过相对较小尺寸的电路通过线圈馈送，从而可以以较小的旋转变化实现高度密集的磁存储，并且可以提供以低噪声水平旋转的电动机的驱动控制电路。三相无刷电动机的一相线圈以全幅度驱动，施加的电压等于源电压，并且其中一相的线圈以逐渐变化的电压驱动，使得正弦波形的电流并且通过反馈控制驱动剩余相的线圈，使得流过所有线圈的总电流成为预定电流值。

5. 发明申请

US20080061726A1 Control device for synchronous motor 有权
标题翻译：同步电机控制装置
公开(公告)号：US20080061726A1
公开(公告)日：2008-03-13
申请号：US11895406
申请日：2007-08-23
申请人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa , Junnosuke Nakatsugawa
发明人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa , Junnosuke Nakatsugawa
IPC分类号： H02P6/08
CPC分类号： H02P6/10 , H02P21/05
摘要： A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed.
摘要翻译：提供了一种用于抑制由个体变化引起的旋转脉动的同步电机的控制技术，而不使控制算法复杂化。在作为同步电动机的控制装置的电动机驱动系统中，为了抑制用于驱动同步电动机的交流频率的N倍的脉动分量，控制器将其中的干扰响应的相位特性相对于脉动频率的控制器设置在±45°以内。因此，抑制了感应电压的变形或相位的变化而产生的转矩脉动成分。

6. 发明申请

US20110074324A1 Control Device for Synchronous Motor 失效
标题翻译：同步电机控制装置
公开(公告)号：US20110074324A1
公开(公告)日：2011-03-31
申请号：US12963392
申请日：2010-12-08
申请人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa , Junnosuke Nakatsugawa
发明人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa , Junnosuke Nakatsugawa
IPC分类号： H02P6/10
CPC分类号： H02P6/10 , H02P21/05
摘要： A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed.
摘要翻译：提供了一种用于抑制由个体变化引起的旋转脉动的同步电机的控制技术，而不使控制算法复杂化。在作为同步电动机的控制装置的电动机驱动系统中，为了抑制用于驱动同步电动机的交流频率的N倍的脉动分量，控制器将其中的干扰响应的相位特性相对于脉动频率的控制器设置在±45°以内。因此，抑制了感应电压的变形或相位的变化而产生的转矩脉动成分。

7. 发明授权

US07294982B2 Motor drive device and integrated circuit device for motor driving 有权
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：US07294982B2
公开(公告)日：2007-11-13
申请号：US11371243
申请日：2006-03-09
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。

8. 发明授权

US08569983B2 Motor driving apparatus and method for control of motor revolution 有权
标题翻译：电机驱动装置及电机转速控制方法
公开(公告)号：US08569983B2
公开(公告)日：2013-10-29
申请号：US13044042
申请日：2011-03-09
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02P6/00
CPC分类号： H02P6/10 , G11B19/28 , H02P6/18
摘要： This invention provides a motor driving apparatus that made it possible to reduce torque ripples including those attributed to load variation of the motor and an associated method for control of motor revolution. An output stage to a multiphase DC motor is comprised of power elements to supply output voltages to multiphase coils and a predriver to supply drive voltages to the power elements. A resistor means detects a current flowing through the power elements. A supply current detector detects a voltage signal produced across the resistor means as a supply current, using a high-speed ADC and a moving average filter. An output controller generates a PWM signal with a frequency lower than the frequency of the high-speed ADC so that the current detected by the supply current detector conforms to a current signal indicating a motor revolving speed and transfers the PWM signal to the output stage.
摘要翻译：本发明提供一种电动机驱动装置，其能够减少扭矩波动，包括归因于电动机的负载变化的转矩波动，以及用于控制电动机转速的相关方法。向多相直流电动机的输出级由向多相线圈提供输出电压的功率元件和向功率元件提供驱动电压的预驱动器组成。电阻装置检测流过功率元件的电流。电源电流检测器使用高速ADC和移动平均滤波器来检测跨电阻器件产生的电压信号作为电源电流。输出控制器产生频率低于高速ADC频率的PWM信号，使得由电源电流检测器检测到的电流符合指示电动机转速的电流信号，并将PWM信号传输到输出级。

9. 发明授权

US08232751B2 Drive system of synchronous motor 失效
标题翻译：同步电机驱动系统
公开(公告)号：US08232751B2
公开(公告)日：2012-07-31
申请号：US12547693
申请日：2009-08-26
申请人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa
发明人： Yoshitaka Iwaji , Yasuhiko Kokami , Minoru Kurosawa
IPC分类号： H02P6/00
CPC分类号： H02P21/04 , H02P6/187 , H02P21/32 , H02P2207/05
摘要： A position sensorless drive method capable of driving a permanent magnet motor by an ideal sine-wave current and enabling the driving from an extremely low-speed range in the vicinity of zero-speed is provided. A neutral-point potential of the permanent magnet motor is detected in synchronization with a PWM waveform of an inverter. The position of a rotor of the permanent magnet motor is estimated from the variation of the neutral-point potential. Since the neutral-point potential is varied in accordance with the magnetic circuit characteristics of an individual permanent magnet motor, the position can be detected regardless of the presence of saliency of the permanent magnet motor.
摘要翻译：提供一种能够通过理想的正弦波电流驱动永磁电动机并且能够在零速度附近的极低速范围内进行驱动的位置无传感器驱动方法。与逆变器的PWM波形同步地检测永磁电动机的中性点电位。根据中性点电位的变化估计永磁电动机的转子的位置。由于中性点电位根据单个永磁电动机的磁路特性而变化，因此可以检测位置，而不管永磁电动机的显着性如何。

10. 发明授权

US07915844B2 Motor driving apparatus and method for control of motor revolution 有权
标题翻译：电机驱动装置及电机转速控制方法
公开(公告)号：US07915844B2
公开(公告)日：2011-03-29
申请号：US12138103
申请日：2008-06-12
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02K29/10
CPC分类号： H02P6/10 , G11B19/28 , H02P6/18
摘要： This invention provides a motor driving apparatus that made it possible to reduce torque ripples including those attributed to load variation of the motor and an associated method for control of motor revolution. An output stage to a multiphase DC motor is comprised of power elements to supply output voltages to multiphase coils and a predriver to supply drive voltages to the power elements. A resistor means detects a current flowing through the power elements. A supply current detector detects a voltage signal produced across the resistor means as a supply current, using a high-speed ADC and a moving average filter. An output controller generates a PWM signal with a frequency lower than the frequency of the high-speed ADC so that the current detected by the supply current detector conforms to a current signal indicating a motor revolving speed and transfers the PWM signal to the output stage.
摘要翻译：本发明提供一种电动机驱动装置，其能够减少扭矩波动，包括归因于电动机的负载变化的转矩波动，以及用于控制电动机转速的相关方法。向多相直流电动机的输出级由向多相线圈提供输出电压的功率元件和向功率元件提供驱动电压的预驱动器组成。电阻装置检测流过功率元件的电流。电源电流检测器使用高速ADC和移动平均滤波器来检测跨电阻器件产生的电压信号作为电源电流。输出控制器产生频率低于高速ADC频率的PWM信号，使得由电源电流检测器检测到的电流符合指示电动机转速的电流信号，并将PWM信号传输到输出级。

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