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1. 发明授权

US07839104B2 Motor drive circuit, fan motor, electronic device, and notebook personal computer 有权
标题翻译：电机驱动电路，风扇电机，电子设备和笔记本个人电脑
公开(公告)号：US07839104B2
公开(公告)日：2010-11-23
申请号：US12252289
申请日：2008-10-15
申请人： Toshiyuki Imai , Tetsuya Yoshitomi , Joji Noie
发明人： Toshiyuki Imai , Tetsuya Yoshitomi , Joji Noie
IPC分类号： H02P6/20
CPC分类号： H02P6/22
摘要： A motor drive circuit includes: a pulse generation circuit configured to generate a pulse signal whose duty ratio of one logic level is increased as a drive voltage is increased in accordance with a target rotation speed of a motor; and a drive control circuit that configured to drive the motor with the drive voltage using a duty ratio higher than the duty ratio of the pulse signal when the motor starts rotating from the stopped state, and configured to drive the motor with the drive voltage during a period when the pulse signal is at the one logic level after the motor starts rotating, based on a rotation signal corresponding to the rotation of the motor.
摘要翻译：电动机驱动电路包括：脉冲发生电路，被配置为产生脉冲信号，其脉冲信号的一个逻辑电平的占空比随驱动电压根据电动机的目标转速而增加; 以及驱动控制电路，其被配置为当所述电动机从所述停止状态开始旋转时，使用高于所述脉冲信号的占空比的占空比，以所述驱动电压驱动所述电动机，并且被配置为在所述驱动电压期间驱动所述电动机的驱动电压基于与电动机的旋转相对应的旋转信号，脉冲信号在电动机开始旋转之后处于一个逻辑电平的时段。

2. 发明授权

US07589485B2 Motor control circuit, fan motor, electronic device, and notebook personal computer 有权
标题翻译：电机控制电路，风扇电机，电子设备和笔记本个人电脑
公开(公告)号：US07589485B2
公开(公告)日：2009-09-15
申请号：US12254731
申请日：2008-10-20
申请人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
发明人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
IPC分类号： H02K29/12
CPC分类号： H02P6/16 , H02P6/08 , Y02P80/116
摘要： A motor control circuit comprising: a rotation control circuit configured to control rotation of a motor based on a rotation control signal for controlling rotation of the motor and a rotational position detection signal from a Hall element for detecting a rotational position of the motor; a determining circuit configured to determine whether the rotation control signal has been generated for a predetermined time period; and a Hall element control circuit configured to apply a Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has been generated for the predetermined time period, and to stop applying the Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has not necessarily been generated for the predetermined time period.
摘要翻译：一种电动机控制电路，包括：旋转控制电路，被配置为基于用于控制所述电动机的旋转的旋转控制信号和来自用于检测所述电动机的旋转位置的霍尔元件的旋转位置检测信号来控制电动机的旋转; 确定电路，被配置为确定所述旋转控制信号是否已经生成了预定时间段; 以及霍尔元件控制电路，其被配置为当所述确定电路确定所述旋转控制信号已经产生预定时间段时将霍尔元件源电压施加到所述霍尔元件，并且停止将所述霍尔元件源电压施加到所述霍尔元件当确定电路确定在预定时间段内不一定产生旋转控制信号时。

3. 发明授权

US08618763B2 Motor drive circuit 有权
标题翻译：电机驱动电路
公开(公告)号：US08618763B2
公开(公告)日：2013-12-31
申请号：US12690993
申请日：2010-01-21
申请人： Joji Noie , Toshiyuki Imai , Takahiro Iida , Tetsuya Yoshitomi
发明人： Joji Noie , Toshiyuki Imai , Takahiro Iida , Tetsuya Yoshitomi
IPC分类号： G05B11/28
CPC分类号： H02P6/20
摘要： The invention provides a motor with a low speed start function and a soft start function. The motor includes a first pulse generation circuit generating a first pulse signal of which a first duty ratio of one of logic levels is increased as a drive voltage corresponding the target rotation speed of the motor is increased, a second pulse generation circuit generating a second pulse signal of which a second duty ratio of one of logic levels is different from the first duty ratio, and a drive control circuit supplying a drive current to a motor coil at the second duty ratio in order to start the rotation of the motor that is stopping and supplying a drive current to the motor coil at the first duty ratio after a predetermined time passes from the start of the rotation of the motor in response to a rotation signal corresponding to the rotation of the motor.
摘要翻译：本发明提供一种具有低速启动功能和软启动功能的电动机。电动机包括：第一脉冲发生电路，其产生第一脉冲信号，其中一个逻辑电平的第一占空比随着与电动机的目标转速对应的驱动电压增加而增加，第二脉冲产生电路产生第二脉冲逻辑电平之一的第二占空比与第一占空比不同的信号，以及以第二占空比向电动机线圈提供驱动电流的驱动控制电路，以便开始正在停止的电动机的旋转以及响应于与电动机的旋转相对应的旋转信号，从电动机的旋转开始经过预定时间之后，以第一占空比向电动机线圈提供驱动电流。

4. 发明申请

US20090102406A1 Motor Control Circuit, Fan Motor, Electronic Device, and Notebook Personal Computer 有权
标题翻译：电机控制电路，风扇电机，电子设备和笔记本电脑
公开(公告)号：US20090102406A1
公开(公告)日：2009-04-23
申请号：US12254731
申请日：2008-10-20
申请人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
发明人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
IPC分类号： H02K29/08
CPC分类号： H02P6/16 , H02P6/08 , Y02P80/116
摘要： A motor control circuit comprising: a rotation control circuit configured to control rotation of a motor based on a rotation control signal for controlling rotation of the motor and a rotational position detection signal from a Hall element for detecting a rotational position of the motor; a determining circuit configured to determine whether the rotation control signal has been generated for a predetermined time period; and a Hall element control circuit configured to apply a Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has been generated for the predetermined time period, and to stop applying the Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has not necessarily been generated for the predetermined time period.
摘要翻译：一种电动机控制电路，包括：旋转控制电路，被配置为基于用于控制所述电动机的旋转的旋转控制信号和来自用于检测所述电动机的旋转位置的霍尔元件的旋转位置检测信号来控制电动机的旋转; 确定电路，被配置为确定所述旋转控制信号是否已经生成了预定时间段; 以及霍尔元件控制电路，其被配置为当所述确定电路确定所述旋转控制信号已经产生预定时间段时将霍尔元件源电压施加到所述霍尔元件，并且停止将所述霍尔元件源电压施加到所述霍尔元件当确定电路确定在预定时间段内不一定产生旋转控制信号时。

5. 发明申请

US20100181951A1 MOTOR DRIVE CIRCUIT 有权
标题翻译：电机驱动电路
公开(公告)号：US20100181951A1
公开(公告)日：2010-07-22
申请号：US12690993
申请日：2010-01-21
申请人： Joji Noie , Toshiyuki Imai , Takahiro Iida , Tetsuya Yoshitomi
发明人： Joji Noie , Toshiyuki Imai , Takahiro Iida , Tetsuya Yoshitomi
IPC分类号： H02P6/20
CPC分类号： H02P6/20
摘要： The invention provides a motor with a low speed start function and a soft start function. The motor includes a first pulse generation circuit generating a first pulse signal of which a first duty ratio of one of logic levels is increased as a drive voltage corresponding the target rotation speed of the motor is increased, a second pulse generation circuit generating a second pulse signal of which a second duty ratio of one of logic levels is different from the first duty ratio, and a drive control circuit supplying a drive current to a motor coil at the second duty ratio in order to start the rotation of the motor that is stopping and supplying a drive current to the motor coil at the first duty ratio after a predetermined time passes from the start of the rotation of the motor in response to a rotation signal corresponding to the rotation of the motor.
摘要翻译：本发明提供一种具有低速启动功能和软启动功能的电动机。电动机包括：第一脉冲发生电路，其产生第一脉冲信号，其中一个逻辑电平的第一占空比随着与电动机的目标转速对应的驱动电压增加而增加，第二脉冲产生电路产生第二脉冲逻辑电平之一的第二占空比与第一占空比不同的信号，以及以第二占空比向电动机线圈提供驱动电流的驱动控制电路，以便开始正在停止的电动机的旋转以及响应于与电动机的旋转相对应的旋转信号，从电动机的旋转开始经过预定时间之后，以第一占空比向电动机线圈提供驱动电流。

6. 发明申请

US20090167219A1 Motor Drive Circuit, Fan Motor, Electronic Device, and Notebook Personal Computer 有权
标题翻译：电机驱动电路，风扇电机，电子设备和笔记本电脑
公开(公告)号：US20090167219A1
公开(公告)日：2009-07-02
申请号：US12252289
申请日：2008-10-15
申请人： Toshiyuki Imai , Tetsuya Yoshitomi , Joji Noie
发明人： Toshiyuki Imai , Tetsuya Yoshitomi , Joji Noie
IPC分类号： H02P1/46 , F04D25/08
CPC分类号： H02P6/22
摘要： A motor drive circuit includes: a pulse generation circuit configured to generate a pulse signal whose duty ratio of one logic level is increased as a drive voltage is increased in accordance with a target rotation speed of a motor; and a drive control circuit that configured to drive the motor with the drive voltage using a duty ratio higher than the duty ratio of the pulse signal when the motor starts rotating from the stopped state, and configured to drive the motor with the drive voltage during a period when the pulse signal is at the one logic level after the motor starts rotating, based on a rotation signal corresponding to the rotation of the motor.
摘要翻译：电动机驱动电路包括：脉冲发生电路，被配置为产生脉冲信号，其脉冲信号的一个逻辑电平的占空比随驱动电压根据电动机的目标转速而增加; 以及驱动控制电路，其被配置为当所述电动机从所述停止状态开始旋转时，使用高于所述脉冲信号的占空比的占空比，以所述驱动电压驱动所述电动机，并且被配置为在所述驱动电压期间驱动所述电动机的驱动电压基于与电动机的旋转相对应的旋转信号，脉冲信号在电动机开始旋转之后处于一个逻辑电平的时段。

7. 发明申请

US20120068605A1 Motor Drive Circuit and Illumination Apparatus 有权
标题翻译：电动机驱动电路和照明装置
公开(公告)号：US20120068605A1
公开(公告)日：2012-03-22
申请号：US13070348
申请日：2011-03-23
申请人： Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
发明人： Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
IPC分类号： H01J7/24 , H02P7/29 , H02P6/22
CPC分类号： H02P6/22 , H02P6/30
摘要： A motor-drive circuit includes: an output transistor configured to supply a drive current to a motor for a cooling fan; a switching-control circuit configured to control switching of the output transistor so that the motor rotates in a first direction, or rotates in a second direction opposite to the first direction; and a switching circuit configured to, when a first time has elapsed since start of rotation of the motor in the first direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the first direction and thereafter rotates in the second direction, and configured to, when a second time has elapsed since start of rotation of the motor in the second direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the second direction and thereafter rotates in the first direction.
摘要翻译：电动机驱动电路包括：输出晶体管，被配置为向用于冷却风扇的电动机提供驱动电流; 开关控制电路，被配置为控制所述输出晶体管的开关，使得所述电动机沿第一方向旋转，或者沿与所述第一方向相反的第二方向旋转; 以及开关电路，其被配置为当从所述电动机沿所述第一方向旋转开始经过第一次时，使所述开关控制电路开始切换控制，使得所述电动机在所述第一方向上停止旋转，然后在所述第一方向上旋转第二方向，并且被配置为当从第二方向的电动机的旋转开始经过第二次时，使开关控制电路开始切换控制，使得电动机在第二方向上停止旋转，然后在第一个方向

8. 发明授权

US07288914B2 Drive wave generation circuit 有权
标题翻译：驱动波发生电路
公开(公告)号：US07288914B2
公开(公告)日：2007-10-30
申请号：US11433751
申请日：2006-05-12
申请人： Tetsuya Yoshitomi , Noriaki Okada , Takaaki Ishii , Yasuyuki Ueshima , Akira Suzuki
发明人： Tetsuya Yoshitomi , Noriaki Okada , Takaaki Ishii , Yasuyuki Ueshima , Akira Suzuki
IPC分类号： H02N2/02
CPC分类号： H02N2/067 , H02N2/025
摘要： Two standard waves from a standard waveform generation circuit are output via an output gate while being interchanged by a direction selector. The switching operation of the direction selector is controlled by a direction control signal M/I. 200 cycles of the standard waveforms are counted up by a 200-cycle counter. A drive counter is downcounted every 200 cycles, while the drive counter is upcounted in accordance with the number of drive pulses DRIVE. When the count value of the drive counter becomes zero, output from the output gate is thereby stopped. At the time of startup, outputs from the 200-cycle counter are counted so as to output a drive wave in a predetermined number in a predetermined direction.
摘要翻译：来自标准波形发生电路的两个标准波通过输出门输出，同时由方向选择器互换。方向选择器的切换操作由方向控制信号M / I控制。 200个周期的标准波形由200个周期的计数器计数。驱动器计数器每200个周期进行计数，而驱动计数器根据驱动脉冲DRIVE的数量进行计数。当驱动计数器的计数值变为零时，从输出门输出停止。在启动时，对200周期计数器的输出进行计数，以在预定方向上输出预定数量的驱动波。

9. 发明授权

US06943517B2 Single phase motor driving circuit and single phase motor driving method 失效
标题翻译：单相电机驱动电路和单相电机驱动方式
公开(公告)号：US06943517B2
公开(公告)日：2005-09-13
申请号：US10699443
申请日：2003-10-30
申请人： Tetsuya Yoshitomi , Yasuyuki Ueshima
发明人： Tetsuya Yoshitomi , Yasuyuki Ueshima
IPC分类号： H02P6/08 , H02P6/20 , H02P8/36 , H02P25/04 , H02P27/06 , H02P27/08 , G05B5/00
CPC分类号： H02P8/36 , Y10S388/934
摘要： A single-phase motor driving circuit includes a controller for outputting a control signal to drive a single-phase motor in a period in which a saw-tooth voltage of a predetermined cycle is larger than a duty setting voltage based on a result of comparing a detected temperature voltage changed based on a temperature detected by a temperature detecting device with a starting duty setting voltage increased with time while a voltage smaller than the detected temperature voltage at the time of starting the single-phase motor is set as an initial value. The controller sets the duty setting voltage as the starting duty setting voltage when the result of the comparison shows that the starting duty setting voltage is smaller than the detected temperature voltage, and the duty setting voltage as the detected temperature voltage when the starting duty setting voltage is larger than the detected temperature voltage.
摘要翻译：单相电动机驱动电路包括：控制器，用于在预定周期的锯齿电压大于占空比设定电压的期间输出用于驱动单相电动机的控制信号，所述周期基于比较结果检测温度电压根据由温度检测装置检测出的温度而变化，其中启动负载设定电压随着时间而增加，而小于检测到的启动单相电动机时的温度电压的电压被设定为初始值。当比较结果表明启动占空比设定电压小于检测到的温度电压时，控制器将占空比设定电压设置为起始占空比设定电压，并且当起动占空比设定电压大于检测到的温度电压。

10. 发明授权

US6157151A Motor drive circuit 有权
标题翻译：电机驱动电路
公开(公告)号：US6157151A
公开(公告)日：2000-12-05
申请号：US363621
申请日：1999-07-29
申请人： Tetsuya Yoshitomi , Takashi Someya
发明人： Tetsuya Yoshitomi , Takashi Someya
IPC分类号： H02P6/10 , H02P6/14 , H02P7/06
CPC分类号： H02P6/10 , H02P6/14 , H02P2209/07 , Y02P80/116
摘要： A full wave signal E is compared with a trapezoidal wave signal G in a comparator to output a second comparison signal H. The full wave signal E is obtained through full wave conversion applied to a sine wave signal of a Hall element. The trapezoidal wave signal G is obtained by sampling and holding an attenuated signal F, obtained by attenuating the full wave signal E, at a trailing end of a first comparison signal D, and nulling the attenuated signal F at a subsequent leading end thereof. Then, the first and second comparison signals D, H are added up in an OR circuit to output an addition signal K, so that no drive current IL flows through the driving coils at a point near the former and latter halves of a phase changeover point. Near the former half of a phase changeover a point, the drive current IL is nulled before counter electromotive force Ec becomes small, enabling motor noise reduction. Near the latter half of a phase changeover point, the drive current IL remains zero, continuously from the former half, preventing a drop of efficiency in driving a motor. Since a trapezoidal wave signal G is made from the attenuated signal F, a period with the drive current IL being zero is always ensured near the former half of a phase changeover point.
摘要翻译：将全波信号E与比较器中的梯形波信号G进行比较，以输出第二比较信号H.全波信号E通过施加到霍尔元件的正弦波信号的全波变换获得。梯形波信号G是通过对在第一比较信号D的尾端衰减全波信号E而获得的衰减信号F进行采样和保持而得到的，并在其后一个前端对衰减信号F进行归零。然后，将第一和第二比较信号D，H相加在OR电路中以输出相加信号K，使得驱动线圈在相邻切换点。在前一半相位切换点附近，反电动势Ec变小之前，驱动电流IL为零，能够降低电机噪音。在相转变点的后半部分附近，驱动电流IL从前半部分连续保持为零，从而防止驱动电动机的效率下降。由于衰减信号F产生梯形波信号G，因此在相转变点的前半部附近始终确保驱动电流IL为零的周期。

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