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。

公开(公告)号：US08030864B2

公开(公告)日：2011-10-04

申请号：US12483168

申请日：2009-06-11

申请人： Toshiyuki Imai ,  Takahiro Iida ,  Joji Noie

发明人： Toshiyuki Imai ,  Takahiro Iida ,  Joji Noie

IPC分类号： H02P6/16

CPC分类号： H02P6/06

摘要： A motor drive circuit includes a first amplifier circuit to amplify a difference between first and second position detection signals with a gain becoming smaller according to drop in power supply voltage, to output a first amplification signal, the first and second position detection signals being signals indicating a rotational position of a rotor in a motor, having a frequency corresponding to a rotation speed of the motor, and being opposite in phase to each other; a second amplifier circuit to amplify the difference between the first and second position detection signals with the gain, to output a second amplification signal opposite in phase to the first amplification signal; and a drive circuit to amplify the difference between the first amplification signal and the second amplification signal with a predetermined gain to be saturated at the power supply voltage, to output a driving voltage for driving the motor.

摘要翻译： 电动机驱动电路包括：第一放大电路，用于根据电源电压的下降放大第一和第二位置检测信号之间的差值，输出第一放大信号;第一和第二位置检测信号是指示 电动机中的转子的旋转位置，具有与电动机的转速对应的频率，并且彼此相位相反; 第二放大器电路，用于以增益放大第一和第二位置检测信号之间的差，以输出与第一放大信号相位相反的第二放大信号; 以及驱动电路，以在所述电源电压下以预定的增益来放大所述第一放大信号和所述第二放大信号之间的差，以输出用于驱动所述电动机的驱动电压。

公开(公告)号：US20100033118A1

公开(公告)日：2010-02-11

申请号：US12483168

申请日：2009-06-11

申请人： Toshiyuki Imai ,  Takahiro Iida ,  Joji Noie

发明人： Toshiyuki Imai ,  Takahiro Iida ,  Joji Noie

IPC分类号： H02P6/06

CPC分类号： H02P6/06

摘要： A motor drive circuit includes a first amplifier circuit to amplify a difference between first and second position detection signals with a gain becoming smaller according to drop in power supply voltage, to output a first amplification signal, the first and second position detection signals being signals indicating a rotational position of a rotor in a motor, having a frequency corresponding to a rotation speed of the motor, and being opposite in phase to each other; a second amplifier circuit to amplify the difference between the first and second position detection signals with the gain, to output a second amplification signal opposite in phase to the first amplification signal; and a drive circuit to amplify the difference between the first amplification signal and the second amplification signal with a predetermined gain to be saturated at the power supply voltage, to output a driving voltage for driving the motor.

摘要翻译： 电动机驱动电路包括：第一放大电路，用于根据电源电压的下降放大第一和第二位置检测信号之间的差值，输出第一放大信号;第一和第二位置检测信号是指示 电动机中的转子的旋转位置，具有与电动机的转速对应的频率，并且彼此相位相反; 第二放大器电路，用于以增益放大第一和第二位置检测信号之间的差，以输出与第一放大信号相位相反的第二放大信号; 以及驱动电路，以在所述电源电压下以预定的增益来放大所述第一放大信号和所述第二放大信号之间的差，以输出用于驱动所述电动机的驱动电压。

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。

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。

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。

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。

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。

公开(公告)号：US20070241701A1

公开(公告)日：2007-10-18

申请号：US11690280

申请日：2007-03-23

申请人： Joji Noie

发明人： Joji Noie

IPC分类号： H02H7/00

CPC分类号： H02H7/0844

摘要： A motor drive circuit comprises a first power line; a second power line; an H-bridge circuit that includes a first source transistor and a first sink transistor connected serially, a second source transistor and a second sink transistor connected serially, a motor coil connected at a connection point between the first source transistor and the first sink transistor, and first to fourth regenerative diodes disposed respectively on the first and second source transistors and the first and second sink transistors, the H-bridge circuit being connected between the first power line and the ground, the first source transistor and the second sink transistor being switched complementarily to the second source transistor and the first sink transistor; and a voltage constraint circuit connected between the second power line and control electrodes of the first and second source transistors, the voltage constraint circuit constraining increase in the voltage of the control electrodes of the first and second source transistors to a voltage corresponding to the voltage of the second power line, the first and second source transistors being transistors turned on/off in accordance with a voltage difference between an electrode on the first power line and the control electrode, the voltage of the second power line being a voltage that turns off the second source transistor if a current flows from the first source transistor to the second sink transistor.

摘要翻译： 电动机驱动电路包括第一电力线; 第二条电力线 H桥电路，包括串联连接的第一源晶体管和第一宿晶体管，串联连接的第二源晶体管和第二宿晶体管，连接在第一源晶体管和第一宿晶体管之间的连接点处的电机线圈， 以及分别设置在第一和第二源极晶体管以及第一和第二宿晶体管上的第一至第四再生二极管，H桥电路连接在第一电力线与地之间，第一源极晶体管和第二宿晶体管被切换 互补于第二源晶体管和第一宿晶体管; 以及连接在第二电源线与第一和第二源极晶体管的控制电极之间的电压约束电路，电压约束电路限制第一和第二源极晶体管的控制电极的电压升高到对应于 所述第二电源线，所述第一和第二源极晶体管根据所述第一电力线上的电极与所述控制电极之间的电压差导通/截止，所述第二电力线的电压为关闭所述第二电力线的电压 第二源晶体管，如果电流从第一源晶体管流到第二宿晶体管。

公开(公告)号：US08330406B2

公开(公告)日：2012-12-11

申请号：US12710848

申请日：2010-02-23

申请人： Joji Noie

发明人： Joji Noie

IPC分类号： H02P6/08

CPC分类号： H02P29/025 ,  H02P7/04

摘要： This invention provides a motor drive circuit, which makes it possible to prevent braking when a power supply voltage is lower than a predetermined voltage while suppressing at a low cost a rise in a voltage on a power supply line when a kickback occurs. The motor drive circuit is formed to include first and second power supply lines connected with and shunted from a power supply, an H-bridge circuit, and a means to control the H-bridge circuit. The means controls the H-bridge circuit so that a regeneration path is not created in the H-bridge circuit when the power supply voltage is lower than a predetermined voltage.

摘要翻译： 本发明提供一种电动机驱动电路，其能够在电源电压低于预定电压时防止制动，同时以低成本抑制当发生反冲时电源线上的电压升高。 电动机驱动电路形成为包括与电源，H桥电路和控制H桥电路的装置连接并分流的第一和第二电源线。 该装置控制H桥电路，使得当电源电压低于预定电压时，H桥电路中不产生再生路径。