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1. 发明申请

US20060023337A1 Brushless motor and disk drive apparatus 失效
公开(公告)号：US20060023337A1
公开(公告)日：2006-02-02
申请号：US11212451
申请日：2005-08-26
申请人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
发明人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
IPC分类号： G11B15/46
CPC分类号： H02P6/22 , H02P2209/07
摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.

2. 发明授权

US07095195B2 Motor and disk drive apparatus 失效
标题翻译：电机和磁盘驱动装置
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。

3. 发明授权

US07110206B2 Brushless motor and disk drive apparatus 失效
公开(公告)号：US07110206B2
公开(公告)日：2006-09-19
申请号：US11212451
申请日：2005-08-26
申请人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
发明人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
IPC分类号： G11B15/46
CPC分类号： H02P6/22 , H02P2209/07
摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.

4. 发明授权

US06958877B2 Brushless motor and disk drive apparatus 失效
标题翻译：无刷电机和磁盘驱动装置
公开(公告)号：US06958877B2
公开(公告)日：2005-10-25
申请号：US10329849
申请日：2002-12-26
申请人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
发明人： Makoto Gotou , Hisanori Nagase , Masaki Tagome
IPC分类号： H02P6/22 , G11B15/46
CPC分类号： H02P6/22 , H02P2209/07
摘要： A brushless motor has first and second power transistors which form current paths to three-phase windings so as to rotate a rotor. A position detecting part produces a position signal in response to a rotation of the rotor. An activation operation block controls active operation of the first and second power transistors in response to the position signal. The activation operation block includes a starting operation part which comprises an initial phase setting part, phase changing part and a phase correcting part. The initial phase setting part sets an initial phase of drive signals to the three-phase windings in response to the level of the position signal at the timing of a start signal. The phase changing part changes sequentially the phase of the drive signals to the three-phase windings in the positive direction in response to time. The phase correcting part corrects the phase of the drive signals to the three-phase windings in response to the occurrence of the rising and falling edges of the position signal. Therefore, the brushless motor with reduced position sensor can stably start the rotation of the rotor by using one position signal of one position sensor.
摘要翻译：无刷电动机具有第一和第二功率晶体管，其形成到三相绕组的电流路径，以使转子旋转。位置检测部分响应于转子的旋转产生位置信号。激活操作块响应于位置信号控制第一和第二功率晶体管的有效操作。激活操作块包括启动操作部分，其包括初始相位设置部分，相位改变部分和相位校正部分。初始相位设置部分响应于在起始信号的定时处的位置信号的电平，将驱动信号的初始相位设置到三相绕组。相位变化部根据时间顺序地将驱动信号的相位向正方向改变为三相绕组。响应于位置信号的上升沿和下降沿的发生，相位校正部分将驱动信号的相位校正到三相绕组。因此，具有减小位置传感器的无刷电动机可以通过使用一个位置传感器的一个位置信号来稳定地开始转子的旋转。

5. 发明申请

US20050067890A1 Motor driving apparatus and disk apparatus using the same 有权
标题翻译：电动机驱动装置及使用其的盘装置
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。

6. 发明授权

US07073872B2 Motor driving apparatus and disk apparatus using the same 有权
标题翻译：电动机驱动装置及使用其的盘装置
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。

7. 发明申请

US20080130186A1 PWM DRIVE APPARATUS AND METHOD FOR CORRECTING OUTPUT OFFSET THEREOF 有权
标题翻译： PWM驱动装置和校正其输出偏移的方法
公开(公告)号：US20080130186A1
公开(公告)日：2008-06-05
申请号：US11940028
申请日：2007-11-14
申请人： Hisanori Nagase , Tomohiro Kume
发明人： Hisanori Nagase , Tomohiro Kume
IPC分类号： H01H47/32 , G05F1/565
CPC分类号： H02M3/156 , H02M2003/1555 , H03K7/08
摘要： A first voltage-to-current converter converts a difference voltage between a command voltage and a reference voltage into a current. A second voltage-to-current converter converts a difference voltage between a positive output terminal and a negative output terminal of a PWM drive apparatus into a current. A low-pass filter is connected to a connection point between an output terminal of the first voltage-to-current converter and an output terminal of the second voltage-to-current converter. An amplifier amplifies a difference voltage between a voltage at the connection point and a reference voltage. A PWM modulator PWM-modulates an output voltage of the amplifier. A drive section drives a load in accordance with an output signal of the PWM modulator.
摘要翻译：第一电压 - 电流转换器将指令电压和参考电压之间的差值电压转换为电流。第二电压 - 电流转换器将PWM驱动装置的正输出端和负输出端之间的差电压转换为电流。低通滤波器连接到第一电压 - 电流转换器的输出端和第二电压 - 电流转换器的输出端之间的连接点。放大器放大连接点处的电压与参考电压之间的差分电压。 PWM调制器PWM调制放大器的输出电压。驱动部分根据PWM调制器的输出信号驱动负载。

8. 发明授权

US06477063B2 Multi-output switching power source apparatus 有权
标题翻译：多输出开关电源装置
公开(公告)号：US06477063B2
公开(公告)日：2002-11-05
申请号：US09947717
申请日：2001-09-06
申请人： Takuya Ishii , Yasufumi Nakajima , Hisanori Nagase , Hideki Okura
发明人： Takuya Ishii , Yasufumi Nakajima , Hisanori Nagase , Hideki Okura
IPC分类号： H02M3335
CPC分类号： H02M3/33561 , H02M3/33592 , H02M2001/009 , Y02B70/1475
摘要： A multi-output switching power source apparatus having a plurality of outputs, wherein electric power regenerated from a load side to one of the outputs can be output as electric power supplied to other loads. The switching power source apparatus comprises a main switching circuit for turning ON/OFF the voltage of a DC power source and for inputting the voltage to the primary winding of a transformer, secondary switching circuits for rectifying AC voltages induced across the output windings, output capacitors for smoothing and outputting the voltages, and a control drive circuit for adjusting the ON/OFF periods of the switching circuits. The outputs are short-circuited during the OFF period of the main switching circuit via the transformer, whereby the fluctuations of the output voltages can be controlled.
摘要翻译：具有多个输出的多输出开关电源装置，其中从负载侧再生到其中一个输出的电力可以作为提供给其它负载的电力输出。开关电源装置包括：主开关电路，其用于接通/断开直流电源的电压并将电压输入到变压器的初级绕组;二次开关电路，用于整流输出绕组两端感应的交流电压;输出电容器用于平滑和输出电压;以及控制驱动电路，用于调节开关电路的导通/截止周期。在主开关电路的断开期间，输出端通过变压器短路，可以控制输出电压的波动。

9. 发明授权

US5548380A Charging device and an image forming apparatus using a charging device 失效
标题翻译：充电装置和使用充电装置的图像形成装置
公开(公告)号：US5548380A
公开(公告)日：1996-08-20
申请号：US365206
申请日：1994-12-28
申请人： Teruyuki Naka , Yoshio Umeda , Toshiki Yamamura , Akira Kumon , Seiichi Suzuki , Junichi Nawama , Hisanori Nagase
发明人： Teruyuki Naka , Yoshio Umeda , Toshiki Yamamura , Akira Kumon , Seiichi Suzuki , Junichi Nawama , Hisanori Nagase
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： A charging device for charging a movable object to be charged. A charging member contacts the object to be charged. A power source applies a voltage to the charging member, wherein the power spectrum PS satisfies the following relation when the space frequency of the profile of the surface of the charging member is analyzed.In the section of 10.ltoreq.f.ltoreq.100 (cycles/mm):PS.ltoreq.-2.5.times.log (f/2)(.mu.m.sup.2)In this way, the charging device prevents charge unevenness due to undulations on the surface of the charging member and charges uniformly while generating very little ozone.
摘要翻译：一种用于对要充电的可移动物体进行充电的充电装置。充电构件接触要充电的物体。电源向充电部件施加电压，其中当分析充电部件的表面的轮廓的空间频率时，功率谱PS满足以下关系。在10

10. 发明授权

US07817399B2 PWM drive apparatus and method for correcting output offset thereof 有权
标题翻译： PWM驱动装置及其输出偏移校正方法
公开(公告)号：US07817399B2
公开(公告)日：2010-10-19
申请号：US11940028
申请日：2007-11-14
申请人： Hisanori Nagase , Tomohiro Kume
发明人： Hisanori Nagase , Tomohiro Kume
IPC分类号： H01H47/28 , H01H47/32
CPC分类号： H02M3/156 , H02M2003/1555 , H03K7/08
摘要： A first voltage-to-current converter converts a difference voltage between a command voltage and a reference voltage into a current. A second voltage-to-current converter converts a difference voltage between a positive output terminal and a negative output terminal of a PWM drive apparatus into a current. A low-pass filter is connected to a connection point between an output terminal of the first voltage-to-current converter and an output terminal of the second voltage-to-current converter. An amplifier amplifies a difference voltage between a voltage at the connection point and a reference voltage. A PWM modulator PWM-modulates an output voltage of the amplifier. A drive section drives a load in accordance with an output signal of the PWM modulator.
摘要翻译：第一电压 - 电流转换器将指令电压和参考电压之间的差值电压转换为电流。第二电压 - 电流转换器将PWM驱动装置的正输出端和负输出端之间的差电压转换为电流。低通滤波器连接到第一电压 - 电流转换器的输出端和第二电压 - 电流转换器的输出端之间的连接点。放大器放大连接点处的电压与参考电压之间的差分电压。 PWM调制器PWM调制放大器的输出电压。驱动部分根据PWM调制器的输出信号驱动负载。

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