公开(公告)号：USD498826S1

公开(公告)日：2004-11-23

申请号：US29187978

申请日：2003-08-12

申请人： Kenichi Takahiro ,  Hideaki Mori ,  Kanji Hanashima ,  Toshihiro Oikawa

设计人： Kenichi Takahiro ,  Hideaki Mori ,  Kanji Hanashima ,  Toshihiro Oikawa

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。