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1. 发明授权

US08604744B2 Motor drive circuit for rotating a rotor by supplying the currents to two coils 有权
标题翻译：用于通过向两个线圈提供电流来旋转转子的电动机驱动电路
公开(公告)号：US08604744B2
公开(公告)日：2013-12-10
申请号：US12978958
申请日：2010-12-27
申请人： Kazumasa Takai , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
发明人： Kazumasa Takai , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
IPC分类号： G05B19/40
CPC分类号： H02P8/36 , H02P8/22
摘要： When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil so as to detect an induced voltage occurring in the first coil or the second coil. The induced voltage detector includes a differential amplifier circuit for differentially amplifying an electric potential across the first coil or that across the second coil, and an analog-to-digital converter circuit for converting an analog value outputted from the differential amplifier circuit into a digital value and outputting the converted digital value to a control unit. The control unit generates a drive signal based on an input signal set externally and adjusts the drive signal in accordance with the induced voltage detected by the induced voltage detector so as to set the adjusted drive signal in the driver unit.
摘要翻译：当驱动器单元处于从第一线圈或第二线圈观察到的高阻抗状态时，感应电压检测器检测跨越第一线圈或跨越第二线圈的电压，以便检测在第一线圈中产生的感应电压或第二线圈。感应电压检测器包括用于差分放大跨越第一线圈或跨越第二线圈的电位的差分放大器电路和用于将从差分放大器电路输出的模拟值转换为数字值的模数转换器电路并将转换的数字值输出到控制单元。控制单元根据从外部设定的输入信号生成驱动信号，根据感应电压检测器检测出的感应电压来调整驱动信号，将驱动单元的调整后的驱动信号设定。

2. 发明申请

US20100188036A1 DRIVER CIRCUIT 有权
标题翻译：驱动电路
公开(公告)号：US20100188036A1
公开(公告)日：2010-07-29
申请号：US12695555
申请日：2010-01-28
申请人： Kosaku Hioki , Kazumasa Takai , Takeshi Naganuma , Yoshihiro Niwa
发明人： Kosaku Hioki , Kazumasa Takai , Takeshi Naganuma , Yoshihiro Niwa
IPC分类号： G05B19/40
CPC分类号： H02P6/182 , G05B19/40 , H02P6/18 , H02P6/188 , H02P8/04 , H02P8/12 , H02P8/16
摘要： An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils.
摘要翻译：电动机驱动电流的量被控制到适当的值。提供两个线圈，并且通过将供给的电流设定为两个线圈的不同相位，使线圈旋转转子。在其中一个线圈处于高阻抗状态的相位中，检测线圈中产生的感应电压。根据感应电压的状态，输出控制电路控制提供给两个线圈的电动机驱动电流的量。

3. 发明授权

US08497653B2 Driver circuit for driving a stepping motor 有权
标题翻译：用于驱动步进电机的驱动电路
公开(公告)号：US08497653B2
公开(公告)日：2013-07-30
申请号：US12695555
申请日：2010-01-28
申请人： Kosaku Hioki , Kazumasa Takai , Takeshi Naganuma , Yoshihiro Niwa
发明人： Kosaku Hioki , Kazumasa Takai , Takeshi Naganuma , Yoshihiro Niwa
IPC分类号： G05B19/40
CPC分类号： H02P6/182 , G05B19/40 , H02P6/18 , H02P6/188 , H02P8/04 , H02P8/12 , H02P8/16
摘要： An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils.
摘要翻译：电动机驱动电流的量被控制到适当的值。提供两个线圈，并且通过将供给的电流设定为两个线圈的不同相位，使线圈旋转转子。在其中一个线圈处于高阻抗状态的相位中，检测线圈中产生的感应电压。根据感应电压的状态，输出控制电路控制提供给两个线圈的电动机驱动电流的量。

4. 发明申请

US20110156631A1 MOTOR DRIVE CIRCUIT FOR ROTATING A ROTOR BY SUPPLYING THE CURRENTS TO TWO COILS 有权
标题翻译：通过向两个线圈供电来转动转子的电动机驱动电路
公开(公告)号：US20110156631A1
公开(公告)日：2011-06-30
申请号：US12978958
申请日：2010-12-27
申请人： Kazumasa TAKAI , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
发明人： Kazumasa TAKAI , Takeshi Naganuma , Kosaku Hioki , Yoshihiro Niwa
IPC分类号： H02P8/12 , H02P6/08
CPC分类号： H02P8/36 , H02P8/22
摘要： When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil so as to detect an induced voltage occurring in the first coil or the second coil. The induced voltage detector includes a differential amplifier circuit for differentially amplifying an electric potential across the first coil or that across the second coil, and an analog-to-digital converter circuit for converting an analog value outputted from the differential amplifier circuit into a digital value and outputting the converted digital value to a control unit. The control unit generates a drive signal based on an input signal set externally and adjusts the drive signal in accordance with the induced voltage detected by the induced voltage detector so as to set the adjusted drive signal in the driver unit.
摘要翻译：当驱动器单元处于从第一线圈或第二线圈观察到的高阻抗状态时，感应电压检测器检测跨越第一线圈或跨越第二线圈的电压，以便检测在第一线圈中产生的感应电压或第二线圈。感应电压检测器包括用于差分放大跨越第一线圈或跨越第二线圈的电位的差分放大器电路和用于将从差分放大器电路输出的模拟值转换为数字值的模数转换器电路并将转换的数字值输出到控制单元。控制单元根据从外部设定的输入信号生成驱动信号，根据感应电压检测器检测出的感应电压来调整驱动信号，将驱动单元的调整后的驱动信号设定。

5. 发明授权

US08179081B2 Driver circuit 有权
标题翻译：驱动电路
公开(公告)号：US08179081B2
公开(公告)日：2012-05-15
申请号：US12772445
申请日：2010-05-03
申请人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
发明人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
IPC分类号： H02P8/00
CPC分类号： H02P8/16
摘要： A stepping motor includes two coils and has supply currents to the two coils with different phases so that a rotor is rotated by the two coils. During a period where one coil is in a high impedance state, an induced voltage generated at that coil is detected. An output control circuit controls the magnitude of motor drive current supplied to the two coils in accordance with the detected induced voltage state. Then, prior to entering the high impedance state from the drive state, a short-circuit period is provided for short circuiting both terminals of the coil.
摘要翻译：步进电机包括两个线圈，并且具有不同相位的两个线圈的电源电流，使得转子由两个线圈旋转。在一个线圈处于高阻抗状态的时段期间，检测到在该线圈处产生的感应电压。输出控制电路根据检测到的感应电压状态来控制提供给两个线圈的电动机驱动电流的大小。然后，在从驱动状态进入高阻抗状态之前，提供短路时间以使线圈的两个端子短路。

6. 发明申请

US20100289444A1 DRIVER CIRCUIT 有权
标题翻译：驱动电路
公开(公告)号：US20100289444A1
公开(公告)日：2010-11-18
申请号：US12772445
申请日：2010-05-03
申请人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
发明人： Yoshihiro Niwa , Kazumasa Takai , Toshiyuki Shutoku , Takeshi Naganuma , Tomofumi Watanabe
IPC分类号： H02P8/38
CPC分类号： H02P8/16
摘要： A stepping motor includes two coils and has supply currents to the two coils with different phases so that a rotor is rotated by the two coils. During a period where one coil is in a high impedance state, an induced voltage generated at that coil is detected. An output control circuit controls the magnitude of motor drive current supplied to the two coils in accordance with the detected induced voltage state. Then, prior to entering the high impedance state from the drive state, a short-circuit period is provided for short circuiting both terminals of the coil.
摘要翻译：步进电机包括两个线圈，并且具有不同相位的两个线圈的电源电流，使得转子由两个线圈旋转。在一个线圈处于高阻抗状态的时段期间，检测到在该线圈处产生的感应电压。输出控制电路根据检测到的感应电压状态来控制提供给两个线圈的电动机驱动电流的大小。然后，在从驱动状态进入高阻抗状态之前，提供短路时间以使线圈的两个端子短路。

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