公开(公告)号：US20070001669A1

公开(公告)日：2007-01-04

申请号：US11476052

申请日：2006-06-28

申请人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

发明人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

IPC分类号： G01B7/30

CPC分类号： G01D5/208

摘要： A stationary position detection circuit and a motor drive circuit capable of more properly detecting the rotor position are disclosed. The stationary position detection circuit supplies an alternating current to each phase load of the motor. The time during which the current flows in a first direction and the time during which the current flows in a second direction opposite to the first direction are converted into electrical signals and amplified. In accordance with the value of the electrical signals, the position of the motor rotor in stationary mode is determined. The use of the alternating current, unlike the kickback voltage, makes it possible to improve the detection accuracy by amplifying the electrical signals with an increased number of alternations. An increased number of alternations can amplify the electrical signals without increasing the value of the alternating current, and therefore, unlike in the case of the kickback voltage, the alternating current of a large value is not required. As a result, the alternating current can be reduced to a small value and the vibration can be suppressed.

摘要翻译： 公开了能够更适当地检测转子位置的静止位置检测电路和电动机驱动电路。 静止位置检测电路向电机的各相负载提供交流电。 电流沿第一方向流动的时间和电流沿与第一方向相反的第二方向流动的时间被转换成电信号并被放大。 根据电信号的值，确定电机转子在静止模式下的位置。 与反冲电压不同，使用交流电可以通过以增加的交替次数放大电信号来提高检测精度。 增加的交替数量可以放大电信号而不增加交流电流的值，因此与反冲电压不同，不需要大值的交流电。 结果，可以将交流电流减小到较小的值，并且可以抑制振动。

公开(公告)号：US07176677B2

公开(公告)日：2007-02-13

申请号：US11476052

申请日：2006-06-28

申请人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

发明人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

IPC分类号： G01B7/30 ,  G05D3/00

CPC分类号： G01D5/208

摘要： A stationary position detection circuit and a motor drive circuit capable of more properly detecting the rotor position are disclosed. The stationary position detection circuit supplies an alternating current to each phase load of the motor. The time during which the current flows in a first direction and the time during which the current flows in a second direction opposite to the first direction are converted into electrical signals and amplified. In accordance with the value of the electrical signals, the position of the motor rotor in stationary mode is determined. The use of the alternating current, unlike the kickback voltage, makes it possible to improve the detection accuracy by amplifying the electrical signals with an increased number of alternations. An increased number of alternations can amplify the electrical signals without increasing the value of the alternating current, and therefore, unlike in the case of the kickback voltage, the alternating current of a large value is not required. As a result, the alternating current can be reduced to a small value and the vibration can be suppressed.

摘要翻译： 公开了能够更适当地检测转子位置的静止位置检测电路和电动机驱动电路。 静止位置检测电路向电机的各相负载提供交流电。 电流沿第一方向流动的时间和电流沿与第一方向相反的第二方向流动的时间被转换成电信号并被放大。 根据电信号的值，确定电机转子在静止模式下的位置。 与反冲电压不同，使用交流电可以通过以增加的交替次数放大电信号来提高检测精度。 增加的交替数量可以放大电信号而不增加交流电流的值，因此与反冲电压不同，不需要大值的交流电。 结果，可以将交流电流减小到较小的值，并且可以抑制振动。

公开(公告)号：US20070110410A1

公开(公告)日：2007-05-17

申请号：US11649838

申请日：2007-01-05

申请人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

发明人： Satoshi Narumi ,  Masaharu Hoashi ,  Toshiya Suzuki ,  Daisuke Suetsugu ,  Hikaru Nakamura

IPC分类号： H02P7/288

CPC分类号： G01D5/208

摘要： A stationary position detection circuit and a motor drive circuit capable of more properly detecting the rotor position are disclosed. The stationary position detection circuit supplies an alternating current to each phase load of the motor. The time during which the current flows in a first direction and the time during which the current flows in a second direction opposite to the first direction are converted into electrical signals and amplified. In accordance with the value of the electrical signals, the position of the motor rotor in stationary mode is determined. The use of the alternating current, unlike the kickback voltage, makes it possible to improve the detection accuracy by amplifying the electrical signals with an increased number of alternations. An increased number of alternations can amplify the electrical signals without increasing the value of the alternating current, and therefore, unlike in the case of the kickback voltage, the alternating current of a large value is not required. As a result, the alternating current can be reduced to a small value and the vibration can be suppressed.

公开(公告)号：US20090153086A1

公开(公告)日：2009-06-18

申请号：US12334284

申请日：2008-12-12

申请人： Satoshi NARUMI ,  Masaaki Kato ,  Masaharu Hoashi ,  Toshiya Suzuki

发明人： Satoshi NARUMI ,  Masaaki Kato ,  Masaharu Hoashi ,  Toshiya Suzuki

IPC分类号： H02P6/18

CPC分类号： H02P6/18

摘要： The present invention provides a motor drive apparatus which improves a trade-off relation between a stable position detection and noise at its driving. A sensorless drive operation circuit calculates by operation a zero cross point (point p) of a voltage of a position detection phase at the next interval, using time information measured based on an output signal from a comparison circuit at the previous interval and the present interval. After the point p has been calculated, points a and b are detected by interrupting a predetermined time drive current.

摘要翻译： 本发明提供一种电动机驱动装置，其改善了在其行驶时的稳定位置检测和噪声之间的权衡关系。 无传感器驱动操作电路使用基于来自前一间隔的比较电路的输出信号测量的时间信息和当前间隔，通过操作来计算下一个间隔处的位置检测相位的电压的零交叉点（点p） 。 在计算点p之后，通过中断预定的时间驱动电流来检测点a和b。

公开(公告)号：US06806663B2

公开(公告)日：2004-10-19

申请号：US10453738

申请日：2003-06-04

申请人： Satoshi Kusaka ,  Toshiya Suzuki ,  Satoshi Narumi ,  Hiroyuki Tamagawa ,  Masaharu Hoashi

发明人： Satoshi Kusaka ,  Toshiya Suzuki ,  Satoshi Narumi ,  Hiroyuki Tamagawa ,  Masaharu Hoashi

IPC分类号： H02P706

CPC分类号： H02P6/085 ,  H02P6/14 ,  H02P6/182 ,  H02P2209/07

摘要： A motor driving circuit includes an induced voltage detecting circuit for detecting induced voltages in a motor; a rotation speed/phase detecting circuit and an output matrix circuit for generating a plurality of control signals in response to the detection result of the voltage detecting circuit; a current control circuit for generating current control command values in response to the control signals; and a current detecting circuit for detecting output currents that are driving the motor, and for controlling output transistors in response to its detection result and the current control command values. The motor driving circuit can sharply reduce the driving noise of the motor with improving the efficiency of the motor drive by shaping the output currents in a sinusoidal waveform.

摘要翻译： 电动机驱动电路包括用于检测电动机中的感应电压的感应电压检测电路; 旋转速度/相位检测电路和输出矩阵电路，用于响应于电压检测电路的检测结果产生多个控制信号; 电流控制电路，用于响应于所述控制信号产生电流控制指令值; 以及电流检测电路，用于检测驱动电动机的输出电流，并响应于其检测结果和电流控制指令值来控制输出晶体管。 电动机驱动电路可以通过使正弦波形中的输出电流整形来提高电动机驱动的效率，从而大大降低电动机的驱动噪声。

公开(公告)号：US08018189B2

公开(公告)日：2011-09-13

申请号：US12334284

申请日：2008-12-12

申请人： Satoshi Narumi ,  Masaaki Kato ,  Masaharu Hoashi ,  Toshiya Suzuki

发明人： Satoshi Narumi ,  Masaaki Kato ,  Masaharu Hoashi ,  Toshiya Suzuki

IPC分类号： H02P7/00 ,  H02P6/16

CPC分类号： H02P6/18

摘要： The present invention provides a motor drive apparatus which improves a trade-off relation between a stable position detection and noise at its driving. A sensorless drive operation circuit calculates by operation a zero cross point (point p) of a voltage of a position detection phase at the next interval, using time information measured based on an output signal from a comparison circuit at the previous interval and the present interval. After the point p has been calculated, points a and b are detected by interrupting a predetermined time drive current.

摘要翻译： 本发明提供一种电动机驱动装置，其改善了在其行驶时的稳定位置检测和噪声之间的权衡关系。 无传感器驱动操作电路使用基于来自前一间隔的比较电路的输出信号测量的时间信息和当前间隔，通过操作来计算下一个间隔处的位置检测相位的电压的零交叉点（点p） 。 在计算点p之后，通过中断预定的时间驱动电流来检测点a和b。

公开(公告)号：US06724166B2

公开(公告)日：2004-04-20

申请号：US10167078

申请日：2002-06-12

申请人： Satoshi Narumi ,  Hiroyuki Tamagawa ,  Masaharu Hoashi

发明人： Satoshi Narumi ,  Hiroyuki Tamagawa ,  Masaharu Hoashi

IPC分类号： H02P7638

CPC分类号： H02P6/10 ,  G05B5/01 ,  H02P6/28

摘要： There is disclosed an apparatus for reducing motor driving noise, comprising: a selecting circuit for selecting and outputting a current increasing or reducing signal based on a commutation control signal; and a signal synthesizing circuit for synthesizing the current increasing or reducing signal selected by the selecting circuit with a current application control signal supplied to the power supply side switching element of at least a pair of switching elements.

摘要翻译： 公开了一种用于降低电动机驱动噪声的装置，包括：选择电路，用于基于换向控制信号选择和输出电流增减信号; 以及信号合成电路，用于将提供给至少一对开关元件的电源侧开关元件的电流施加控制信号合成由选择电路选择的电流增减信号。

公开(公告)号：US06399999B2

公开(公告)日：2002-06-04

申请号：US09760800

申请日：2001-01-17

申请人： Masaharu Hoashi

发明人： Masaharu Hoashi

IPC分类号： H01L27082

CPC分类号： H01L29/735 ,  H01L29/41708 ,  H01L29/42304

摘要： In a lateral bipolar transistor, a control wiring layer is laid down under an emitter electrode wiring layer, and a voltage according to a reverse bias voltage applied to the collector diffusion layer is applied to the control wiring layer, thereby preventing the occurrence of a leakage current from the emitter diffusion and further the flow of the leakage current to the device isolation region, even under a situation that a certain reverse bias voltage is applied to the collector of the transistor.

摘要翻译： 在横向双极型晶体管中，在发射极电极布线层下方布置控制布线层，并且将施加到集电极扩散层的反向偏置电压的电压施加到控制布线层，从而防止发生泄漏 即使在某些反向偏置电压施加到晶体管的集电极的情况下，发射极扩散的电流和进一步的漏电流流向器件隔离区。