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公开(公告)号：US07768226B2
公开(公告)日：2010-08-03
申请号：US11683667
申请日：2007-03-08
IPC分类号： H02P1/46
摘要： 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 terminal difference voltage, which is the difference voltage between the motor terminal 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.
摘要翻译： 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选择性地通电时电动机端子电压和伪中性点电压之间的差分电压是否超过特定阈值来确定终端差值电压。 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。
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2.发明授权公开(公告)号：US07667419B2
公开(公告)日：2010-02-23
申请号：US11766884
申请日：2007-06-22
IPC分类号： H02P6/18
摘要： A motor driving apparatus includes a virtual difference voltage detecting unit operable to detect a difference voltage between a virtual neutral point of a resistor circuit connected in parallel to motor coils and a terminal of a motor coil in non-conduction state, a rotor position detecting unit operable to detect a position of the rotor based on the difference voltage, and a controller operable to control commutation of an inverter based on the rotor position. The motor driving apparatus has a searching start mode for detecting the rotor position and energizes the coils, and a back electromotive voltage feedback mode for controlling commutation based on the back electromotive voltage. In the searching start mode, a rotor position searching process and a rotation start torque applying process are alternately performed.
摘要翻译： 电动机驱动装置包括：虚拟差分电压检测单元，用于检测与电动机线圈并联连接的电阻电路的虚拟中性点与非导通状态的电动机线圈的端子之间的差分电压;转子位置检测单元 可操作以基于所述差电压检测所述转子的位置，以及控制器，其可操作以基于所述转子位置来控制逆变器的换向。 马达驱动装置具有用于检测转子位置并激励线圈的搜索启动模式，以及用于基于反电动势电压控制换向的反电动势电压反馈模式。 在搜索开始模式中，交替执行转子位置搜索处理和旋转启动转矩施加处理。
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3.发明申请公开(公告)号：US20080018279A1
公开(公告)日：2008-01-24
申请号：US11766884
申请日：2007-06-22
摘要： A motor driving apparatus includes a virtual difference voltage detecting unit operable to detect a difference voltage between a virtual neutral point of a resistor circuit connected in parallel to motor coils and a terminal of a motor coil in non-conduction state, a rotor position detecting unit operable to detect a position of the rotor based on the difference voltage, and a controller operable to control commutation of an inverter based on the rotor position. The motor driving apparatus has a searching start mode for detecting the rotor position and energizes the coils, and a back electromotive voltage feedback mode for controlling commutation based on the back electromotive voltage. In the searching start mode, a rotor position searching process and a rotation start torque applying process are alternately performed.
摘要翻译： 电动机驱动装置包括：虚拟差分电压检测单元，用于检测与电动机线圈并联连接的电阻电路的虚拟中性点与非导通状态的电动机线圈的端子之间的差分电压;转子位置检测单元 可操作以基于所述差电压检测所述转子的位置，以及控制器，其可操作以基于所述转子位置来控制逆变器的换向。 马达驱动装置具有用于检测转子位置并激励线圈的搜索启动模式，以及用于基于反电动势电压控制换向的反电动势电压反馈模式。 在搜索开始模式中，交替执行转子位置搜索处理和旋转启动转矩施加处理。
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公开(公告)号：US20060028161A1
公开(公告)日：2006-02-09
申请号：US11191853
申请日：2005-07-27
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。
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公开(公告)号：US07088067B2
公开(公告)日：2006-08-08
申请号：US11191853
申请日：2005-07-27
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.
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公开(公告)号：US07298106B2
公开(公告)日：2007-11-20
申请号：US11490985
申请日：2006-07-21
IPC分类号： H02P25/12
CPC分类号： H02P6/182
摘要： A rotor position sensorless multiphase motor driving device includes a rotor; a plurality of phase windings; a common terminal to which one terminal of terminals at both ends of each winding is star connected; an upper-side drive transistor and a lower-side drive transistor connected to the other terminal of the winding; a commutation control unit operable to select two terminals other than the common terminal of the windings, and to turn on the corresponding pair of upper-side drive transistor and the lower-side drive transistor; a rotor position search pulse applying unit operable to apply a search pulse to the selected two terminals; and a comparing unit operable to detect a rotor position based on a response signal generated between the terminal which was unselected and the common terminal according to the search pulse application.
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公开(公告)号：US20070018599A1
公开(公告)日：2007-01-25
申请号：US11490985
申请日：2006-07-21
IPC分类号： H02P25/12
CPC分类号： H02P6/182
摘要： A rotor position sensorless multiphase motor driving device includes a rotor; a plurality of phase windings; a common terminal to which one terminal of terminals at both ends of each winding is star connected; an upper-side drive transistor and a lower-side drive transistor connected to the other terminal of the winding; a commutation control unit operable to select two terminals other than the common terminal of the windings, and to turn on the corresponding pair of upper-side drive transistor and the lower-side drive transistor; a rotor position search pulse applying unit operable to apply a search pulse to the selected two terminals; and a comparing unit operable to detect a rotor position based on a response signal generated between the terminal which was unselected and the common terminal according to the search pulse application.
摘要翻译： 一种无转子位置传感器的多相马达驱动装置，包括转子; 多个相绕组; 每个绕组两端的端子的一个端子星形连接的公共端子; 连接到绕组的另一端的上侧驱动晶体管和下侧驱动晶体管; 换向控制单元，其可操作以选择除绕组的公共端子之外的两个端子，并且使相应的一对上侧驱动晶体管和下侧驱动晶体管导通; 转子位置搜索脉冲施加单元，其可操作以向所选择的两个端子施加搜索脉冲; 以及比较单元，其可操作以基于根据搜索脉冲应用在未被选择的终端与公共终端之间产生的响应信号来检测转子位置。
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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
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.
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公开(公告)号：US07122980B2
公开(公告)日：2006-10-17
申请号：US11242386
申请日：2005-10-03
IPC分类号： H02P6/18
摘要： A motor driving apparatus includes a comparator, a threshold controller, a position determining unit, a phase-switching controller, and a current output unit. While the rotor is stopped, the phase-switching controller supplies a predetermined phase of winding with a current pulse having a predetermined pulse width so as not to cause the rotor to react and operate, in order to determine the initial position of the rotor. The position determining unit determines an initial position of the rotor based on the result of comparison between the induced voltage generated in a non-conduction phase by the current pulse and the threshold. The phase-switching controller performs energization or commutation according to the determined initial position of the rotor to start up the motor.
摘要翻译： 电动机驱动装置包括比较器，阈值控制器，位置确定单元，相位切换控制器和电流输出单元。 当转子停止时，相位切换控制器以预定的脉冲宽度的电流脉冲提供预定的绕组相位，以便不使转子发生反应和操作，以便确定转子的初始位置。 位置确定单元基于通过当前脉冲在非导通相中产生的感应电压与阈值之间的比较结果来确定转子的初始位置。 相位切换控制器根据确定的转子的初始位置执行通电或换向以启动电动机。
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公开(公告)号：US20050258788A1
公开(公告)日：2005-11-24
申请号：US11123509
申请日：2005-05-06
申请人： Hideaki Mori , Shinichi Kuroshima
发明人： Hideaki Mori , Shinichi Kuroshima
CPC分类号： H02P6/20 , H02P2209/07
摘要： A Motor driving apparatus adjusts activation start timing of high-side activation control signals UU, VU, WU and the low-side activation control signals UL, VL, and WL with a state determination signal SJ in an activation controller 40, in the period from starting to the time when rotor rotating speed reaches a predetermined value, sets the activation start timing earlier than in normal times to perform leading phase activation control, and in normal times when the rotor rotating speed is a predetermined value or more, controls activation start timing in efficient and optimum phase. Hence, the motor driving apparatus can carry out stable PWM sensorless starting without any starting failure such as oscillation, loss of synchronism and reverse rotation and shorten starting time.
摘要翻译： 电机驱动装置在激活控制器40中的状态判定信号SJ中调整高侧启动控制信号UU，VU，WU和低侧启动控制信号UL，VL，WL的启动开始定时， 从转子转速达到规定值开始的时刻开始，比正常时刻更早地设定起动开始时间，进行超前相位启动控制，在转子转速为规定值以上的正常时刻，控制启动开始时刻 在有效和最佳阶段。 因此，电机驱动装置可以执行稳定的PWM无传感器启动，而不会出现诸如振荡，同步失去和反向旋转等起动故障，缩短启动时间。
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