公开(公告)号：US20090218972A1

公开(公告)日：2009-09-03

申请号：US12389832

申请日：2009-02-20

申请人： Yasunori YAMAMOTO ,  Hisanori Nagase ,  Hideaki Mori

发明人： Yasunori YAMAMOTO ,  Hisanori Nagase ,  Hideaki Mori

IPC分类号： H02P6/14

CPC分类号： H02P6/14

摘要： A reverse current detection apparatus determines whether an electrical conduction control to a motor coil of a motor is in a predetermined state based on a timing signal representing a timing at which to conduct a source current or a sink current through the motor coil and a control signal for a half bridge in a power stage, and compares the output voltage of the power stage with a threshold value, so as to detect the presence/absence of a reverse flow of a phase current based on these results. A motor driving apparatus for driving a motor under a PWM control includes a rectification switching section for switching a rectification scheme from one to another based on the reverse current detection apparatus and a detection result thereof.

摘要翻译： 反向电流检测装置基于表示通过电动机线圈进行源极电流或吸收电流的定时的定时信号以及控制信号来判定对电动机的电动机线圈的导通控制是否处于预定状态 对于功率级的半桥，并且将功率级的输出电压与阈值进行比较，以便基于这些结果来检测相电流的反向流动的存在/不存在。 用于在PWM控制下驱动电动机的电机驱动装置包括：整流转换部分，用于根据反向电流检测装置及其检测结果从一个到另一个切换整流方案。

公开(公告)号：US07073872B2

公开(公告)日：2006-07-11

申请号：US10896027

申请日：2004-07-22

申请人： Masaki Tagome ,  Hisanori Nagase ,  Hideaki Mori ,  Maki Murakami

发明人： Masaki Tagome ,  Hisanori Nagase ,  Hideaki Mori ,  Maki Murakami

IPC分类号： H02P7/04

CPC分类号： G11B19/28 ,  G11B19/26 ,  H02P6/24

摘要： A motor driving apparatus includes a position detector for detecting a rotational position of a motor to output the detection result as a position signal, a frequency comparator for comparing frequencies of continuous periods in the position signal and detecting a reversed state in which the frequency of the signal in the later period is higher than the frequency of the signal in the earlier period, a brake change over unit for selecting a reverse torque brake control which applies reverse torque to the rotor for braking or a short brake control which shorts coils of the motor for braking and instructing the brake control. The brake change over unit changes over the brake control from the reverse torque brake control to the short brake control, when a command signal for applying a reverse torque is output and the frequency comparator detects the reversed state.

摘要翻译： 电动机驱动装置包括：位置检测器，用于检测电动机的旋转位置以输出检测结果作为位置信号;频率比较器，用于比较位置信号中的连续周期的频率，并检测反转状态，其中， 后期的信号高于前一期间的信号频率，用于选择向转子施加反向转矩以进行制动的逆转矩制动控制的单位制动器变化或短路电动机的短路制动控制 用于制动和指示制动控制。 当输出用于施加反向转矩的指令信号并且频率比较器检测到反转状态时，单元上的制动器变化超过制动控制从反向转矩制动控制到短暂制动控制。

公开(公告)号：US20050067890A1

公开(公告)日：2005-03-31

申请号：US10896027

申请日：2004-07-22

申请人： Masaki Tagome ,  Hisanori Nagase ,  Hideaki Mori ,  Maki Murakami

发明人： Masaki Tagome ,  Hisanori Nagase ,  Hideaki Mori ,  Maki Murakami

IPC分类号： B60T8/00 ,  G11B19/26 ,  G11B19/28 ,  H02P6/24

CPC分类号： G11B19/28 ,  G11B19/26 ,  H02P6/24

摘要： A motor driving apparatus includes a position detector for detecting a rotational position of a motor to output the detection result as a position signal, a frequency comparator for comparing frequencies of continuous periods in the position signal and detecting a reversed state in which the frequency of the signal in the later period is higher than the frequency of the signal in the earlier period, a brake change over unit for selecting a reverse torque brake control which applies reverse torque to the rotor for braking or a short brake control which shorts coils of the motor for braking and instructing the brake control. The brake change over unit changes over the brake control from the reverse torque brake control to the short brake control, when a command signal for applying a reverse torque is output and the frequency comparator detects the reversed state.

摘要翻译： 电动机驱动装置包括：位置检测器，用于检测电动机的旋转位置以输出检测结果作为位置信号;频率比较器，用于比较位置信号中的连续周期的频率，并检测反转状态，其中， 后期的信号高于前一期间的信号频率，用于选择向转子施加反向转矩以进行制动的逆转矩制动控制的单位制动器变化或短路电动机的短路制动控制 用于制动和指示制动控制。 当输出用于施加反向转矩的指令信号并且频率比较器检测到反转状态时，单元上的制动器变化超过制动控制从反向转矩制动控制到短暂制动控制。

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：US07768226B2

公开(公告)日：2010-08-03

申请号：US11683667

申请日：2007-03-08

申请人： Shingo Fukamizu ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

发明人： Shingo Fukamizu ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

IPC分类号： H02P1/46

CPC分类号： H02P6/182 ,  H02P6/21

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。

公开(公告)号：US07667419B2

公开(公告)日：2010-02-23

申请号：US11766884

申请日：2007-06-22

申请人： Shingo Fukamizu ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

发明人： Shingo Fukamizu ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

IPC分类号： H02P6/18

CPC分类号： H02P6/182 ,  H02P6/185 ,  H02P6/22

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。

公开(公告)号：US07622873B2

公开(公告)日：2009-11-24

申请号：US11548495

申请日：2006-10-11

申请人： Go Takata ,  Hideaki Mori ,  Yasunori Yamamoto

发明人： Go Takata ,  Hideaki Mori ,  Yasunori Yamamoto

IPC分类号： H02P29/04

CPC分类号： H02P6/182

摘要： A reverse current detection unit detects the direction of the motor current during the synchronous rectifier period based on the polarity of the on voltage of a switching device contained in the motor current path, and outputs a reverse current detection signal representing the result of this detection to the PWM control unit. Change in the output of the PWM control unit that generates the drive signal for a particular switching device in the drive unit is controlled based on the reverse current detection signal and the energizing pattern of the drive unit is changed when motor current is detected in the synchronous rectifier period to be flowing in the opposite direction as in the urging period. The flow of motor current to the power supply is thus reduced and a rise in the power supply voltage can be prevented.

摘要翻译： 反向电流检测单元根据电动机电流路径中包含的开关装置的导通电压的极性，在同步整流时段内检测电动机电流的方向，并将表示该检测结果的反向电流检测信号输出到 PWM控制单元。 基于反向电流检测信号来控制产生用于驱动单元中的特定开关装置的驱动信号的PWM控制单元的输出的变化，并且当在同步中检测到电动机电流时，驱动单元的通电模式被改变 整流器周期在与施力期相反的方向上流动。 电动机电流流向电源因此减少，并且可以防止电源电压的上升。

公开(公告)号：US20090243526A1

公开(公告)日：2009-10-01

申请号：US12367855

申请日：2009-02-09

申请人： Daisuke ITO ,  Hideaki Mori ,  Yasunori Yamamoto

发明人： Daisuke ITO ,  Hideaki Mori ,  Yasunori Yamamoto

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： In a back electromotive force phase detecting device, a timing generating unit generates a timing signal indicating a start timing, an intermediate timing and an end timing of a 180-degree electrical angle period in a detection target phase, from an excitation pulse signal. A difference calculating unit receives the timing signal, and calculates a difference between a total PWM control period of the detection target phase during a first-half 90-degree period, and a total PWM control period of the detection target phase during a second-half 90-degree period. In an excitation control device, a control unit changes the capability of driving a motor based on an output of the back electromotive force phase detecting device.

摘要翻译： 在反电动势相位检测装置中，定时生成单元从激励脉冲信号生成表示检测对象相位中的180度电角度周期的开始定时，中间定时和结束定时的定时信号。 差分计算单元接收定时信号，并且计算在半个90度周期期间的检测目标相位的总PWM控制周期与下半期检测目标相位的总PWM控制周期之间的差 90度时期。 在励磁控制装置中，控制单元根据反电动势相位检测装置的输出来改变驱动电动机的能力。

公开(公告)号：US20080231219A1

公开(公告)日：2008-09-25

申请号：US12051471

申请日：2008-03-19

申请人： Hideaki Mori ,  Yasunori Yamamoto ,  Noriaki Emura

发明人： Hideaki Mori ,  Yasunori Yamamoto ,  Noriaki Emura

IPC分类号： H02P23/00

CPC分类号： H02P3/22 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P23/0004 ,  H02P27/08

摘要： To reduce noise by limiting a current peak value to a predetermined value or less and by smoothing the waveforms of drive currents during the current limitation, switching control means (30) according to the present invention turns ON all of one-side drive transistors selected from the high-side drive transistors (21, 22 and 23) and the low-side drive transistors (25, 26 and 27) of power supply means (20) for a predetermined period, and turns OFF all of the other-side drive transistors for a predetermined period in response to a current control signal for the current peak value to a predetermined value or less.

摘要翻译： 为了通过将电流峰值限制在规定值以下，通过平滑电流限制时的驱动电流的波形来降低噪声，根据本发明的开关控制装置（30）将从 电源装置（20）的高侧驱动晶体管（21,22和23）和低侧驱动晶体管（25,26和27），并且使所有的另一侧驱动晶体管 响应于当前峰值的电流控制信号达到预定值或更短的预定时间段。

公开(公告)号：US20080018279A1

公开(公告)日：2008-01-24

申请号：US11766884

申请日：2007-06-22

申请人： Shingo FUKAMIZU ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

发明人： Shingo FUKAMIZU ,  Yasunori Yamamoto ,  Hideaki Mori ,  Shinichi Kuroshima

IPC分类号： H02P7/00 ,  H02P7/06

CPC分类号： H02P6/182 ,  H02P6/185 ,  H02P6/22

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。