公开(公告)号：US5339013A

公开(公告)日：1994-08-16

申请号：US57458

申请日：1993-05-07

申请人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

发明人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

IPC分类号： H02P6/08 ,  H02P6/18 ,  H02P7/00

CPC分类号： H02P6/182 ,  H02P6/085

摘要： By making different duty controls at the time of change in rotating speed and at the time of stable rotating speed, respectively, it is possible to realize the driving of a brushless motor 3 which enables smooth and rapid change of a rotating speed coping with a load.

摘要翻译： 通过分别在转速变化时和转速稳定时进行不同的占空比控制，可以实现无刷电动机3的驱动，无刷电动机3能够平稳而快速地变更与负载对应的转速 。

公开(公告)号：US06998861B2

公开(公告)日：2006-02-14

申请号：US10311993

申请日：2002-04-26

申请人： Mitsuhisa Nakai ,  Keiichi Kuriyama ,  Akihiro Kyogoku ,  Yoshinao Nakamoto ,  Koji Taniguchi ,  Hiroaki Higashi

发明人： Mitsuhisa Nakai ,  Keiichi Kuriyama ,  Akihiro Kyogoku ,  Yoshinao Nakamoto ,  Koji Taniguchi ,  Hiroaki Higashi

IPC分类号： G01R31/02

CPC分类号： H05K3/3468 ,  H05K1/111 ,  H05K1/116 ,  H05K3/3447 ,  H05K2201/09418 ,  H05K2201/09781 ,  H05K2201/10689 ,  H05K2203/046 ,  Y02P70/611

摘要： A circuit board for surface mounting by solder flow an electronic component having narrow lead pitches, the board having a first solder leading land having a first side and located on the circuit board adjacent to a land for mounting an electronic component, and a second solder leading land located next to the first solder leading land and opposite the first side of the first solder leading land. A method for flow soldering a surface mounted electronic component on such a circuit board, wherein the second solder leading land is positioned at a rear end of the circuit board against a direction of a movement of the circuit board when the circuit board moves toward a solder flow.

摘要翻译： 一种用于通过焊料流动表面安装的电路板，具有窄引线间距的电子部件，所述板具有第一焊料引导焊盘，其具有第一侧并且位于电路板上邻近用于安装电子部件的焊盘，以及第二焊料引线 位于第一焊锡引导区的旁边，与第一焊锡领域的第一侧相对。 一种用于将表面安装的电子部件流焊在这种电路板上的方法，其中当电路板朝向焊料移动时，第二焊料引导焊盘位于电路板的后端，以抵抗电路板的运动方向 流。

公开(公告)号：US5311105A

公开(公告)日：1994-05-10

申请号：US60693

申请日：1993-05-10

申请人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

发明人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

IPC分类号： H02P6/08 ,  H02P6/18 ,  H02P7/00

CPC分类号： H02P6/18 ,  H02P6/085

摘要： In a brushless motor, during a synchronized operation mode, n kinds of driving waveforms having the first to n-th patterns are sequentially outputted and the outputting of the n-th pattern is followed by cyclically outputting the patterns again in a sequence from the first pattern, thereby generating a rotating magnetic field in an armature winding. Upon transition from the synchronized operation mode to a rotor position detection operation mode, the commutation signal is changed over from the synchronizing signal to a signal based on the rotor position detector signal after the (n-1)th pattern has been outputted and at a timing when the n-th pattern is to be subsequently outputted. Thereby, upon transition from the synchronized operation mode to the rotor position detection operation mode, the commutation signals are linked in a proper sequence so that smooth mode transition becomes possible without the addition of any special ancillary circuit.

摘要翻译： 在无刷电动机中，在同步动作模式中，依次输出具有第1〜第n图形的n种驱动波形，并且按照从第1到第n图案顺序循环地再次输出图案的第n图形的输出 从而在电枢绕组中产生旋转磁场。 在从同步运行模式转换到转子位置检测运行模式的同时，在输出第（n-1）模式之后，根据转子位置检测器信号将换向信号从同步信号转换为信号， 当随后输出第n个图案时的定时。 因此，在从同步运行模式转移到转子位置检测运行模式的同时，换流信号以适当的顺序连接，从而平滑模式转换成为可能，而不添加任何特殊的辅助电路。

公开(公告)号：US5304903A

公开(公告)日：1994-04-19

申请号：US59348

申请日：1993-05-06

申请人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

发明人： Mitsuhisa Nakai ,  Shiro Maeda ,  Toshiaki Yagi

IPC分类号： H02P6/08 ,  H02P6/18 ,  H02P7/00

CPC分类号： H02P6/085 ,  H02P6/182

摘要： In a brushless motor, the frequency of an output signal of a synchronizing signal generation unit, a duty ratio in a synchronized operation mode and a duty ratio in a rotator position detection operation mode are set such that a rotating speed in the rotator position detection operation mode becomes equal to or lower than a rotating speed in the synchronized operation mode, thereby enabling smooth change-over from the synchronized operation mode to the rotator position detection operation mode.

摘要翻译： 在无刷电动机中，将同步信号生成部的输出信号的频率，同步运转模式的占空比和转子位置检测动作模式的占空比进行设定，使得转子位置检测动作 模式在同步运转模式下变为等于或低于转速，从而能够从同步运转模式到旋转体位置检测动作模式的平滑切换。