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    • 41. 发明授权
    • Motor drive device
    • 电机驱动装置
    • US07531976B2
    • 2009-05-12
    • US11676644
    • 2007-02-20
    • Shingo FukamizuYasunori YamamotoShinichi Kuroshima
    • Shingo FukamizuYasunori YamamotoShinichi Kuroshima
    • H02P6/18
    • H02P6/182H02P6/21
    • Problems with accuracy reading position detection signal peaks and minute phase differences in the detection current make motor drive control easily susceptible to differences in motor characteristics. The rotor position is determined based on whether or not a neutral point difference voltage, which is the difference voltage between the neutral point voltage and the pseudo-neutral-point voltage when the motor phases are selectively energized, exceeds a specific threshold value. The phase energized to start the motor is determined based on this determination and the motor is energized accordingly to start. Instead of switching directly from the search step at the initial rotor position to the back-EMF voltage mode, a search and start mode that creates initial rotor speed sufficient to start the motor is executed before entering the back-EMF voltage mode.
    • 读取位置检测信号峰值和检测电流的微小相位差的问题使电机驱动控制容易受到电机特性的差异的影响。 转子位置是基于当电动机相位被选择性地通电时中性点电压和伪中性点电压之间的差分电压是否中性点差电压是否超过特定阈值来确定。 基于该确定确定启动电动机的相位,相应地启动电动机起动。 代替直接从初始转子位置处的搜索步骤切换到反电动势电压模式,在进入反电动势电压模式之前执行产生足以启动电动机的初始转子速度的搜索和启动模式。
    • 42. 发明授权
    • Motor driving device, motor driving method, and motor apparatus
    • 电动机驱动装置,电动机驱动方式以及电动机装置
    • US07365506B2
    • 2008-04-29
    • US11151057
    • 2005-06-13
    • Yasunori YamamotoHideaki MoriYoshiaki Igarashi
    • Yasunori YamamotoHideaki MoriYoshiaki Igarashi
    • H02P7/00
    • H02P23/0004H02P23/26
    • A motor driving part has half bridge circuits in which a high potential side drive transistor and a low potential side drive transistor are connected in series to each other, and a connection point therebetween serves as a stator winding driving terminal of each phase of a motor. A rotor position detector detects a rotor position of the motor and outputs a rotor position signal. The current phase detector detects the phase of a phase current flowing in the stator winding driving terminal. A voltage signal generator controls and generates a voltage profile signal such that a first phase difference that is a difference between the phase of the phase current and the phase of the rotor position signal is kept to a predetermined electrical angle. A driving signal generator generates a PWM signal that drives the drive transistor of each phase depending on the voltage profile signal.
    • 电动机驱动部具有半桥电路,其中高电位侧驱动晶体管和低电位侧驱动晶体管彼此串联连接,并且它们之间的连接点用作电动机各相的定子绕组驱动端子。 转子位置检测器检测电动机的转子位置并输出转子位置信号。 电流相位检测器检测在定子绕组驱动端子中流动的相电流的相位。 电压信号发生器控制并产生电压分布信号,使得作为相电流的相位与转子位置信号的相位之差的第一相位差保持在预定的电角度。 驱动信号发生器根据电压分布信号生成驱动各相的驱动晶体管的PWM信号。
    • 44. 发明申请
    • Drive apparatus
    • 驱动装置
    • US20060238160A1
    • 2006-10-26
    • US11398399
    • 2006-04-05
    • Shingo FukamizuYasunori Yamamoto
    • Shingo FukamizuYasunori Yamamoto
    • G05B1/06
    • G11B19/02G11B7/0953G11B7/0956
    • Optical disc drives designed for reduced power consumption switch the supply voltage in three stages between first, second, and third power supplies, but the reduction in power consumption that is possible in the drive circuits with three stage switching control is limited. A drive output tracking signal is generated according to the waveform of the drive output that drives the focus and tracking actuators, and this drive output tracking signal is applied to a step-up type focusing and tracking power supply. The step-up power supply controls the fixed output according to the drive output tracking signal, and when the drive output is greater than the fixed output, control output that is greater than or equal to the fixed output and slightly greater than the drive output is generated. This control output is supplied to the focus and tracking drive circuits to produce drive output.
    • 设计用于降低功耗的光盘驱动器将电源电压在第一,第二和第三电源之间分三级切换,但是在具有三级切换控制的驱动电路中可能的功耗的降低是有限的。 根据驱动焦点和跟踪执行器的驱动输出的波形产生驱动输出跟踪信号,该驱动输出跟踪信号被应用于升压型聚焦跟踪电源。 升压电源根据驱动输出跟踪信号控制固定输出,当驱动输出大于固定输出时,大于或等于固定输出的控制输出略大于驱动输出, 生成。 该控制输出提供给焦点和跟踪驱动电路以产生驱动输出。
    • 46. 发明申请
    • Motor driving device, motor driving method, and electronic device
    • 电动机驱动装置,电机驱动方式及电子装置
    • US20050275362A1
    • 2005-12-15
    • US11151057
    • 2005-06-13
    • Yasunori YamamotoHideaki MoriYoshiaki Igarashi
    • Yasunori YamamotoHideaki MoriYoshiaki Igarashi
    • H02P7/06
    • H02P23/0004H02P23/26
    • A motor driving device that is low in cost and capable to control the phase of a motor with high efficiency and with accuracy. A motor driving device includes a motor driving part, a rotor position detector, a current phase detector, a voltage signal generator, and a driving signal generator. The motor driving part has a plurality of half bridge circuits in which a high potential side drive transistor and a low potential side drive transistor are connected in series to each other, and a connection point therebetween serves as a stator winding driving terminal of each phase of a motor. The rotor position detector detects a rotor position of the motor and outputting a rotor position signal. The current phase detector detects the phase of a phase current flowing in the stator winding driving terminal. The voltage signal generator controls and generates a voltage profile signal such that a first phase difference that is a difference between the phase of the phase current and the phase of the rotor position signal is kept to a predetermined electrical angle. The driving signal generator generates a PWM signal that drives the drive transistor of each phase depending on the voltage profile signal.
    • 一种电机驱动装置,其成本低,能够高精度地控制电动机的相位。 电动机驱动装置包括电动机驱动部,转子位置检测器,电流相位检测器,电压信号发生器和驱动信号发生器。 电动机驱动部具有多个半桥电路,其中高电位侧驱动晶体管和低电位侧驱动晶体管彼此串联连接,并且它们之间的连接点用作每相的定子绕组驱动端子 一个电机 转子位置检测器检测电动机的转子位置并输出转子位置信号。 电流相位检测器检测在定子绕组驱动端子中流动的相电流的相位。 电压信号发生器控制并产生电压分布信号,使得作为相电流的相位与转子位置信号的相位之间的差的第一相位差被保持为预定的电角度。 驱动信号发生器根据电压分布信号产生驱动每相驱动晶体管的PWM信号。
    • 47. 发明授权
    • Motor drive method and motor driver
    • 电机驱动方式和电机驱动
    • US06873126B2
    • 2005-03-29
    • US10608157
    • 2003-06-30
    • Masashi InaoYasunori YamamotoTaishi IwanagaTomoharu YokouchiHirofumi Sakai
    • Masashi InaoYasunori YamamotoTaishi IwanagaTomoharu YokouchiHirofumi Sakai
    • H02P6/00H02P6/14H02K23/00
    • H02P6/14H02P6/28H02P2209/07
    • A motor drive method for a motor driver having output circuits each including upper and lower side switching elements connected in series, and a current detection resistance connected in series with the output circuits in common. The motor drive method includes the steps of: turning ON a switching element on one side of one of the output circuits for a time period corresponding to a predetermined electrical angle; and repeatedly switching switching elements on the other side of a plurality of output circuits among the remaining ones of the output circuits. In the switching step, each of a plurality of periods obtained by dividing the time period corresponding to the predetermined electrical angle includes a first period in which one of the switching elements to be switched is turned ON and a second period in which another one of the switching elements is turned ON.
    • 一种用于具有输出电路的电机驱动器的电机驱动方法,每个输出电路各自包括串联连接的上下开关元件和与输出电路串联连接的电流检测电阻。 电动机驱动方法包括以下步骤:在一个输出电路的一侧上接通开关元件一段对应于预定电角度的时间段; 并且在其余输出电路中的多个输出电路的另一侧反复切换开关元件。 在切换步骤中,通过划分对应于预定电角度的时间段而获得的多个周期中的每个周期包括第一周期,其中要切换的开关元件中的一个被接通,以及第二周期,其中, 开关元件接通。
    • 48. 发明授权
    • Motor driving device and motor driving method
    • 电机驱动装置及电机驱动方式
    • US06710569B2
    • 2004-03-23
    • US10367820
    • 2003-02-19
    • Taishi IwanagaYasunori Yamamoto
    • Taishi IwanagaYasunori Yamamoto
    • H02P308
    • H02P6/14H02P6/10H02P2209/07
    • The present invention provides a motor driving device that produces a first PWM control signal and a second PWM control signal according respectively to different torque command signals for energizing motor coils of a plurality of phases with PWM control in parallel, wherein it is possible to avoid a situation where two-phase simultaneous energization continues for a long period of time. For this purpose, a PWM control section unconditionally turns OFF the first and second PWM control signals according to a first reset pulse signal and a second reset pulse signal, respectively, produced by an oscillation section. Thus, it is possible to avoid a situation where two phases are energized simultaneously for a long period of time, and to maintain the parallelism of the two phases being energized.
    • 本发明提供了一种电动机驱动装置,其分别根据不同的转矩指令信号产生第一PWM控制信号和第二PWM控制信号,用于通过并行的PWM控制来激励多相的电动机线圈,其中可以避免 两相同时通电持续很长时间的情况。 为此,PWM控制部根据由振荡部分产生的第一复位脉冲信号和第二复位脉冲信号无条件地关闭第一和第二PWM控制信号。 因此,可以避免长时间同时通电两相,并保持两相并联通电的情况。