公开(公告)号：US06424106B1

公开(公告)日：2002-07-23

申请号：US09820450

申请日：2001-03-29

申请人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Hideki Nishino

发明人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Hideki Nishino

IPC分类号： H02P602

摘要： FET power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings. A voltage detecting part compares terminal voltages of the three-phase windings and produces a detected pulse signal in response to a comparison result. A state shifting part and an activation control part control active periods of the FET power transistors in response to the detected pulse signal. A commanding part produces a command signal in response to an output pulse signal of the voltage detecting means. A switching operation block produces a switching pulse signal in response to a comparison result of a current-detection signal with the command signal, and causes at least an FET power transistor of the power supplying part to perform high-frequency switching in response to the switching pulse signal. The state shifting part produces a timing signal after an adjust time from the detection of the detected pulse signal and shift-holds a holding state in response to the timing signal. The state shifting part changes the adjust time smaller in case that the command signal is larger than a predetermined value, thereby making the product value of the adjust time and the rotational speed smaller in the case.

公开(公告)号：US06262557B1

公开(公告)日：2001-07-17

申请号：US09325983

申请日：1999-06-04

申请人： Makoto Gotou ,  Masaaki Ochi

发明人： Makoto Gotou ,  Masaaki Ochi

IPC分类号： H02P7628

CPC分类号： H02P6/085

摘要： First power transistors of first power amplifying parts and second power transistors of second power amplifying parts form current paths from a DC power source to three-phase windings. A first distribution control block activates the first power amplifying parts with first three-phase signals, each having an active electrical angle larger than 120 degrees. A second distribution control block activates the second power amplifying parts with second three-phase signals, each having an active electrical angle larger than 120 degrees. A switching operation block has a current detecting part and a switching control part. The current detecting part obtains a current detected signal corresponding to a composed supply current of negative or positive parts of the three-phase drive currents to the three-phase windings. The switching control part compares an output signal of the current detecting part with a command signal and switches at least one power transistor of the first power transistors and the second power transistors to an off state when the output signal of the current detecting part becomes a value corresponding to the command signal, thereby causing the at least one power transistor to perform high-frequency switching responding with a comparison result.

摘要翻译： 第一功率放大部件的第一功率晶体管和第二功率放大部件的第二功率晶体管形成从直流电源到三相绕组的电流路径。 第一分配控制块利用具有大于120度的有效电角度的第一三相信号激活第一功率放大部件。 第二分配控制块利用具有大于120度的有效电角度的第二三相信号激活第二功率放大部件。 开关操作块具有电流检测部和切换控制部。 电流检测部分获得与三相绕组的三相驱动电流的负或正部分的组合供电电流对应的电流检测信号。 开关控制部将电流检测部的输出信号与指令信号进行比较，当电流检测部的输出信号变为值时，将第一功率晶体管和第二功率晶体管的至少一个功率晶体管切换为断开状态 对应于命令信号，从而使至少一个功率晶体管以比较结果进行高频切换响应。

公开(公告)号：US06566827B2

公开(公告)日：2003-05-20

申请号：US10005955

申请日：2001-11-08

申请人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Shingo Fukamizu ,  Susumu Yamamoto

发明人： Makoto Gotou ,  Masaaki Ochi ,  Hideaki Mori ,  Shingo Fukamizu ,  Susumu Yamamoto

IPC分类号： H02K2300

CPC分类号： G11B19/20 ,  H02P6/085

摘要： In a disk drive apparatus of the present invention, power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings so as to rotate a disk, a position detecting part produces a position signal which responds with terminal voltages of the three-phase windings, an activation operation part controls active periods of the power transistors in response to an output signal of the position detecting part, a commanding part produces a command signal in response to an output pulse signal of the position detecting part, and a switching operation block produces a switching pulse signal in response to a comparison result of a current detection signal with the command signal. The activation operation part produces a slew-rate switching signal which responds with the switching pulse signal, and causes at least a power transistor of the power supplying part to follow the slew-rate switching signal, thereby executing high-frequency switching of the power transistor in response to the slew-rate switching signal.

公开(公告)号：US06255789B1

公开(公告)日：2001-07-03

申请号：US09489107

申请日：2000-01-21

申请人： Masaaki Ochi ,  Makoto Gotou ,  Hideaki Mori

发明人： Masaaki Ochi ,  Makoto Gotou ,  Hideaki Mori

IPC分类号： H02P706

CPC分类号： H02P6/10 ,  H02P6/085

摘要： In the present invention, a Q-phase motor, which electronically switches current paths to plural-phase windings, comprises waveform shaping signal producing device for producing Q-phase waveform shaping signals having a conduction width larger than an electric angle of 360/Q degrees and superimposed signal producing device for superimposing signals to the waveform shaping signals. The superimposed signal producing device comprises superimposed timing producing device for producing superimposed timing signals which are output in a period shorter than a conduction period of the waveform shaping signals in a conduction period of the waveform shaping signals, synchronous rectifying control device for controlling the timing for synchronous rectification, and superimposed signal composing device for composing the signals output from the synchronous rectifying control device with the superimposed timing signals.

摘要翻译： 在本发明中，将电流转换为多相绕组的Q相电动机包括波形整形信号产生装置，用于产生导通宽度大于360°/ Q度的电角度的Q相波形整形信号 以及用于将信号叠加到波形整形信号的叠加信号产生装置。 叠加信号产生装置包括叠加定时产生装置，用于在波形整形信号的导通周期中产生在比波形整形信号的导通周期短的时间内输出的叠加定时信号，用于控制波形整形信号的定时的同步整流控制装置 同步整流和叠加信号组合装置，用于组合来自同步整流控制装置的信号与叠加的定时信号。

公开(公告)号：US06586902B2

公开(公告)日：2003-07-01

申请号：US09912569

申请日：2001-07-25

申请人： Makoto Gotou ,  Hideaki Mori ,  Masaaki Ochi

发明人： Makoto Gotou ,  Hideaki Mori ,  Masaaki Ochi

IPC分类号： G05B1101

CPC分类号： G11B19/28 ,  G11B5/012

摘要： A disk drive apparatus reproduces an information signal from a disk and/or records an information signal on the disk. FET power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings so as to rotate the disk. A voltage detecting part compares terminal voltages of the three-phase windings and produces a detected pulse signal in response to a comparison result. An activation operation block controls active periods of the FET power transistors in response to the detected pulse signal. A commanding part produces a command signal in response to an output pulse signal of the voltage detecting part. A switching operation block produces a switching pulse signal in response to a comparison result of a current-detection signal with the command signal, and causes at least an FET power transistor of the power supplying part to perform high-frequency switching in response to the switching pulse signal. The switching operation block changes a timing of the switching pulse signal in response to detection of the detected pulse signal so that the voltage detecting part can accurately achieve the next detection of the detected pulse signal. Further, an excellent speed control of the disk can be achieved by the accurate output pulse signal of the voltage detecting part.

摘要翻译： 磁盘驱动装置从盘重放信息信号和/或在盘上记录信息信号。 供电部的FET功率晶体管执行高频开关动作，并形成到三相绕组的电流路径，以使盘旋转。 电压检测部分比较三相绕组的端电压，并根据比较结果产生检测的脉冲信号。 激活操作块响应于检测到的脉冲信号来控制FET功率晶体管的有效周期。 指令部分响应于电压检测部分的输出脉冲信号产生指令信号。 开关操作块响应于具有指令信号的电流检测信号的比较结果产生开关脉冲信号，并且使至少一个供电部的FET功率晶体管响应于开关而进行高频开关 脉冲信号。 开关操作块响应于检测到的脉冲信号的检测而改变开关脉冲信号的定时，使得电压检测部分可以准确地实现检测到的脉冲信号的下一检测。 此外，可以通过电压检测部分的精确的输出脉冲信号来实现盘的极好的速度控制。

公开(公告)号：US5982118A

公开(公告)日：1999-11-09

申请号：US123164

申请日：1998-07-27

申请人： Makoto Gotou ,  Masaaki Ochi

发明人： Makoto Gotou ,  Masaaki Ochi

IPC分类号： H02P6/08 ,  H02K23/00

CPC分类号： H02P6/085

摘要： First FET power transistors of first power amplifying parts and second FET power transistors of second power amplifying parts form current paths from a DC power source to three-phase windings. Three-phase first amplified current signals varying smoothly in rising and falling slopes are supplied to conduction control terminal sides of the first power amplifying parts. Three-phase second amplified current signals varying smoothly in rising and falling slopes are supplied to conduction control terminal sides of the second power amplifying parts. A switching control part performs simultaneous on-off switching of the conduction control terminal sides of the first power amplifying parts, thereby causing first FET power transistors of the first power amplifying parts to perform high-frequency on-off switching. As a result, three-phase drive currents to the windings vary smoothly, thereby reducing motor vibration. And also, power loss of the FET power transistors is reduced remarkably, thereby improving power efficiency of a motor.

摘要翻译： 第一功率放大部件的第一FET功率晶体管和第二功率放大部件的第二FET功率晶体管形成从直流电源到三相绕组的电流路径。 在上升和下降斜率上平滑变化的三相第一放大电流信号被提供给第一功率放大部件的导通控制端侧。 在上升和下降斜率上平滑变化的三相第二放大电流信号被提供给第二功率放大部件的导通控制端侧。 开关控制部分对第一功率放大部件的导通控制端子侧进行同时开关切换，从而使第一功率放大部件的第一FET功率晶体管进行高频开关切换。 因此，绕组的三相驱动电流平滑变化，从而减少电机的振动。 此外，FET功率晶体管的功率损耗显着降低，从而提高了电动机的功率效率。

公开(公告)号：US07126301B2

公开(公告)日：2006-10-24

申请号：US10530442

申请日：2003-10-22

申请人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

发明人： Keiji Nishihara ,  Hideo Nobekawa ,  Hideaki Mori ,  Makoto Gotou

IPC分类号： H02P6/18

CPC分类号： H02P6/182

摘要： A motor driver drives a motor composed of a rotor and plural-phase windings that generate a magnetic field for rotating the rotor, including: a plurality of transistors that operate as switches for supplying current to the windings; a position detector operable to detect a rotational position of the rotor, based on a terminal voltage of each winding; and a switching controller operable to have performed a switching method to turn the transistors to an ON state or to an OFF state for controlling the rotor at the predetermined speed by means of the position detector, wherein the switching controller further controls so as to force each of the transistors into the OFF state for a predetermined duration in a predetermined cycle, and the position detector detects only while the switching controller forcedly keeps the transistor in the OFF state.

摘要翻译： 电动机驱动器驱动由转子和多相绕组组成的电动机，其产生用于使转子旋转的磁场，包括：作为用于向绕组供电的开关的多个晶体管; 位置检测器，其可操作以基于每个绕组的端子电压检测转子的旋转位置; 以及开关控制器，其可操作以执行切换方法，以通过所述位置检测器将所述晶体管转换到导通状态或关闭状态，以便以所述预定速度控制所述转子，其中所述开关控制器进一步控制以迫使每个 的晶体管在预定的周期内保持预定的持续时间，并且位置检测器仅在开关控制器强制将晶体管保持在截止状态时才检测。

公开(公告)号：US06639372B2

公开(公告)日：2003-10-28

申请号：US10132814

申请日：2002-04-24

申请人： Makoto Gotou

发明人： Makoto Gotou

IPC分类号： H02P706

CPC分类号： H02P6/085

摘要： A motor comprising: Q-phase windings; voltage supplying unit; power supplying unit having Q first power transistors and Q second power transistors for supplying a power to said Q-phase windings; voltage detecting unit; state shifting unit; activation control unit; and switching operation unit. The switching operation unit includes switching control circuit for producing a main switching pulse and an auxiliary switching pulse, said switching operation circuit executing high-frequency switching operation of at least one second power transistor among said Q second power transistors responding with said auxiliary switching pulse signal when two first power transistors among said Q first power transistors simultaneously execute high-frequency switching operation responding with said main switching pulse signal while at least another second power transistor among said Q second power transistors executes an ON operation.

摘要翻译： 一种电动机，包括：Q相绕组; 电压供应单元; 具有Q个第一功率晶体管的供电单元和用于向所述Q相绕组供电的Q个第二功率晶体管; 电压检测单元; 状态转换单元; 启动控制单元; 和切换操作单元。 开关操作单元包括用于产生主开关脉冲和辅助开关脉冲的开关控制电路，所述开关操作电路执行响应所述辅助开关脉冲信号的所述Q个第二功率晶体管中的至少一个第二功率晶体管的高频开关操作 当所述Q个第一功率晶体管中的两个第一功率晶体管同时执行响应于所述主开关脉冲信号的高频开关操作，而所述Q个第二功率晶体管中的至少另一个第二功率晶体管执行ON操作。

公开(公告)号：US06570357B2

公开(公告)日：2003-05-27

申请号：US10103418

申请日：2002-03-21

申请人： Makoto Gotou

发明人： Makoto Gotou

IPC分类号： G05B1128

CPC分类号： G11B19/247 ,  G11B19/28 ,  H02P6/085 ,  H02P6/10 ,  H02P6/16 ,  H02P6/182 ,  H02P6/28 ,  H02P2209/07 ,  Y10S318/02

摘要： A disk drive apparatus comprising Q phase windings; voltage supplying means; Q first power amplifying means, each one of which including a first power transistor; Q second power amplifying means, each one which including a second power transistor; altering signal producing means for producing altering signals; commanding means for producing a command signal; and switching operation means for producing a modified command signal which responds with said command signal of said commanding means and has a part varied in response to at least an output signal of said altering signal producing means, producing a current detected signal in response to a current to said Q-phase windings from said voltage supplying means, and causing at least one power transistor among Q of said first power transistors and Q of said second power transistors to perform high-frequency switching in response to said modified command signal and said current detected signal.

摘要翻译： 一种包括Q相绕组的磁盘驱动装置; 电压供给装置; Q第一功率放大装置，其中每一个包括第一功率晶体管; Q个第二功率放大装置，每个包括一个第二功率晶体管; 改变信号产生装置，用于产生改变信号; 用于产生命令信号的命令装置; 以及用于产生修改的命令信号的切换操作装置，其响应于所述命令装置的所述命令信号并且具有响应于所述改变信号产生装置的至少一个输出信号而变化的部分，响应于电流产生电流检测信号 到所述电压提供装置的所述Q相绕组，并且使所述第一功率晶体管的Q和所述第二功率晶体管的Q中的至少一个功率晶体管响应于所述修改的指令信号和所检测的电流而执行高频开关 信号。

公开(公告)号：US5969490A

公开(公告)日：1999-10-19

申请号：US7253

申请日：1998-01-14

申请人： Makoto Gotou

发明人： Makoto Gotou

IPC分类号： H02P6/14 ,  H02P6/16 ,  H02P6/08

CPC分类号： H02P6/16 ,  H02P6/14 ,  H02P2209/07

摘要： In a brushless motor having a field permanent-magnet part, an altering signal producing circuit produces altering signals which vary analogously with output signals of a position detector. Then, at least one distributing circuit distributes current to first and/or second three-phase distributed current signals which vary analogously with the output signals of the altering signals. The first and/or second distributed current signals may be composed by a distributing composer to produce three-phase distributed signals. A driving block uses the three-phase distributed signals to produce driving signals for the three-phase coils.

摘要翻译： 在具有场永磁体部分的无刷电动机中，改变信号产生电路产生与位置检测器的输出信号类似地变化的改变信号。 然后，至少一个分配电路将电流分配到与改变信号的输出信号类似地变化的第一和/或第二三相分布电流信号。 第一和/或第二分布式电流信号可以由分配作曲者组成，以产生三相分布信号。 驱动块使用三相分布信号来产生三相线圈的驱动信号。