公开(公告)号：US20060198168A1

公开(公告)日：2006-09-07

申请号：US11206118

申请日：2005-08-18

申请人： Kenji Fujita ,  Yukihiro Nishikawa

发明人： Kenji Fujita ,  Yukihiro Nishikawa

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control method for controlling a switching power supply circuit has a control circuit including a setting device that limits the exciting current of a transformer at the time of changeover from a switching delay to a switching period. The setting value set by the setting device is changed slowly to prevent the exciting current of transformer from changing rapidly and to reduce the excitation noise of transformer, and the setting value is changed gradually to prevent the output voltage from lowering even when the load becomes heavier than a certain value during the light load operation. The control method facilitates reducing the electric power consumption of the switching power supply circuit under a light load, reducing the transformer excitation noise and preventing the output voltage from lowering when the load is light.

摘要翻译： 用于控制开关电源电路的控制方法具有控制电路，该控制电路包括限制从切换延迟切换到切换周期时的变压器的励磁电流的设定装置。 由设定装置设定的设定值缓慢变化，以防止变压器的励磁电流迅速变化，降低变压器的励磁噪声，设定值逐渐变化，即使负载变重，也可防止输出电压降低 在轻载操作期间比一定值。 该控制方法有助于在轻负载下降低开关电源电路的功耗，降低变压器励磁噪声，并且在负载较轻时防止输出电压降低。

公开(公告)号：US07242596B2

公开(公告)日：2007-07-10

申请号：US11206118

申请日：2005-08-18

申请人： Kenji Fujita ,  Yukihiro Nishikawa

发明人： Kenji Fujita ,  Yukihiro Nishikawa

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control method for controlling a switching power supply circuit has a control circuit including a setting device that limits the exciting current of a transformer at the time of changeover from a switching delay to a switching period. The setting value set by the setting device is changed slowly to prevent the exciting current of transformer from changing rapidly and to reduce the excitation noise of transformer, and the setting value is changed gradually to prevent the output voltage from lowering even when the load becomes heavier than a certain value during the light load operation. The control method facilitates reducing the electric power consumption of the switching power supply circuit under a light load, reducing the transformer excitation noise and preventing the output voltage from lowering when the load is light.

摘要翻译： 用于控制开关电源电路的控制方法具有控制电路，该控制电路包括限制从切换延迟切换到切换周期时的变压器的励磁电流的设定装置。 由设定装置设定的设定值缓慢变化，以防止变压器的励磁电流迅速变化，降低变压器的励磁噪声，设定值逐渐变化，即使负载变重，也可防止输出电压降低 在轻载操作期间比一定值。 该控制方法有助于在轻负载下降低开关电源电路的功耗，降低变压器励磁噪声，并且在负载较轻时防止输出电压降低。

公开(公告)号：US09230533B2

公开(公告)日：2016-01-05

申请号：US13378398

申请日：2010-06-09

申请人： Yukihiro Nishikawa ,  Yoshiko Nishikawa

发明人： Yukihiro Nishikawa ,  Yoshiko Nishikawa

IPC分类号： B29C67/20 ,  G10K11/162 ,  B29C44/56

CPC分类号： G10K11/162 ,  B29C44/5636 ,  Y10T428/24273

摘要： Sound-absorbing material is provided which is more effective for the same volume. A sound-absorbing body is formed characteristically by hot-compression molding of a raw material (C) comprises a flexible polyurethane foam to a volume ratio ranging from 1/1.5 to 1/12. In the molding, metal molds (A·B) are heated in an electric furnace up to a set temperature of 180° C.; the flexible polyurethane foam of the cell number of 50 is held between the metal molds (A·B), and compressed and heated in the electric furnace in this state at 180° C. for 60 minutes; the fixing clamp is removed; and the hot-compressed urethane foam is taken out to obtain the intended sound-absorbing body.

摘要翻译： 提供了对相同体积更有效的吸声材料。 吸声体的特征在于，原料（C）的热压缩成型由软质聚氨酯泡沫构成，体积比为1 / 1.5〜1/12。 在成型中，金属模具（A·B）在电炉中加热至设定温度为180℃; 细胞数为50的柔性聚氨酯泡沫体保持在金属模具（A·B）之间，并在该状态下在180℃下在电炉中压缩和加热60分钟; 拆下固定夹具; 取出热压缩的聚氨酯泡沫以获得预期的吸音体。

公开(公告)号：US08443935B2

公开(公告)日：2013-05-21

申请号：US13390351

申请日：2010-08-10

申请人： Yukihiro Nishikawa ,  Yoshiko Nishikawa

发明人： Yukihiro Nishikawa ,  Yoshiko Nishikawa

IPC分类号： E04B1/82

CPC分类号： G10K11/16

摘要： A sound-absorbing body having sound-absorbing characteristics suitable for in-home and car audio systems, wherein the indoor echo of sound wave output from a speaker or echo in a speaker enclosure should be reduced. Namely, showing flat sound-absorbing properties while maintaining a high sound-absorbing ratio in the medium tone range, having a simple structure, is easily installed, water-resistant and is decorative. Specifically, a sound-absorbing body having a plurality of porous members provided with air holes therein and a structure composed by three or more layers formed by bonding the individual porous members via an adhesive layer having a preset thickness, wherein one side of said structure is located in the side of a sound source and the other side of said structure has a peak-and-valley pattern that is formed by alternately positioning said porous members and air layers to thereby flatten and improve the sound-absorbing ratio in the medium tone range.

摘要翻译： 一种吸音体，具有适用于室内和汽车音响系统的吸声特性，其中应该减少扬声器输出的声波的室内回波或扬声器外壳的回波。 也就是说，具有简单结构的在中等色调范围内保持高吸音率的平坦的吸声性容易安装，防水并且是装饰性的。 具体而言，具有多个多孔构件的吸声体，其中设置有空气孔，以及通过经由具有预设厚度的粘合剂层将各个多孔构件接合而形成的三层以上的结构，其中，所述结构的一侧为 位于声源侧并且所述结构的另一侧具有通过交替地定位所述多孔构件和空气层而形成的峰谷图案，从而使介质色调范围内的吸音率变平且提高 。

公开(公告)号：US07894212B2

公开(公告)日：2011-02-22

申请号：US12071691

申请日：2008-02-25

申请人： Yukihiro Nishikawa

发明人： Yukihiro Nishikawa

IPC分类号： H02M3/335

CPC分类号： H02M7/003 ,  H02M3/33569

摘要： A switching power supply device includes a first series circuit of first and second switching elements connected in parallel with a DC power supply. An isolation transformer has primary and secondary windings and first and second auxiliary windings, a first layer including the primary windings between a second layer of the two auxiliary windings, and a third layer of the secondary windings. A capacitor in series with the primary windings defines a second series circuit in parallel with the second switching element. A rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor, connected to the secondary windings. First and second control circuits turn on and off the first and second switching elements based on voltages generated in the two auxiliary windings, to obtain a DC output from the rectifying and smoothing circuit, enabling an adequate auxiliary windings voltage and stable switching operation including stable zero-voltage turn-on.

摘要翻译： 开关电源装置包括与直流电源并联连接的第一和第二开关元件的第一串联电路。 隔离变压器具有初级和次级绕组以及第一和第二辅助绕组，第一层包括在两个辅助绕组的第二层之间的初级绕组和次级绕组的第三层。 与初级绕组串联的电容器限定与第二开关元件并联的第二串联电路。 整流和平滑电路包括连接到次级绕组的整流二极管和平滑电容器。 第一和第二控制电路基于两个辅助绕组中产生的电压来导通和关断第一和第二开关元件，以获得整流和平滑电路的直流输出，使得能够提供足够的辅助绕组电压和稳定的开关操作，包括稳定的零 电压开启。

公开(公告)号：US20090279768A1

公开(公告)日：2009-11-12

申请号：US12514579

申请日：2007-11-13

申请人： Yukihiro Nishikawa

发明人： Yukihiro Nishikawa

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  A61B6/032 ,  A61B6/037 ,  G06T2211/424

摘要： A computerized tomography apparatus and program for obtaining a cross-sectional image corresponding to projections are provided in which, for a temporary cross-sectional image f(x, y) obtained in some manner, an evaluation function E is defined which includes differences between projections calculated from f(x, y) and measured projections, and f(x, y) is changed in a manner which substantially decreases E. The computerized tomography apparatus and program are characterized in which a back projection operation, which is required by conventional computerized tomography, is not essentially required. The computerized tomography apparatus and program are particularly effective in removal or reduction of metal artifacts, aliasing artifacts and the like.

摘要翻译： 提供一种用于获得与突起相对应的横截面图像的计算机断层摄影装置和程序，其中，对于以某种方式获得的临时截面图像f（x，y），定义包括投影之间的差异的评价函数E 从f（x，y）和测量的投影计算得到的f（x，y）以大大减小E的方式改变。计算机断层摄影装置和程序的特征在于其中常规计算机化 层析成像，基本上不是必需的。 计算机断层摄影装置和程序在去除或减少金属伪像，混叠伪影等方面特别有效。

公开(公告)号：US20090244943A1

公开(公告)日：2009-10-01

申请号：US12382194

申请日：2009-03-10

申请人： Michiya Yamada ,  Yukihiro Nishikawa

发明人： Michiya Yamada ,  Yukihiro Nishikawa

IPC分类号： H02M7/06

CPC分类号： H02M1/4225 ,  H02M2001/123 ,  Y02B70/126 ,  Y02P80/112

摘要： A power converter includes a small-sized inductor connected to an AC voltage input line for power factor correction and a filter for suppressing conduction noise. The inductor is connected to a rectifier and comprises first and second windings and that are wound on a common magnetic core and loosely coupled with each other. A leakage inductance component of the inductor functions as an energy storage element in a main conversion operation and an excitation inductance component of the inductor functions as a noise reduction element for suppressing an conduction noise caused by on-off operation of a switching element.

摘要翻译： 功率转换器包括连接到用于功率因数校正的AC电压输入线的小型电感器和用于抑制传导噪声的滤波器。 电感器连接到整流器并且包括第一和第二绕组并且缠绕在公共磁芯上并且彼此松耦合。 电感器的漏电感成分在主变换动作中用作能量存储元件，并且电感器的励磁电感分量用作用于抑制由开关元件的通断操作引起的导通噪声的噪声降低元件。

公开(公告)号：US4915582A

公开(公告)日：1990-04-10

申请号：US230996

申请日：1988-08-11

申请人： Yukihiro Nishikawa

发明人： Yukihiro Nishikawa

IPC分类号： F04D5/00

CPC分类号： F04D5/002 ,  F05B2260/305

摘要： A rotary turbine fluid pump employs unique configurations of turbine vane receptacle opening and turbine vanes. The turbine vane receptacle is connected to a circumferentially extending fluid path, in which free ends of turbine vanes are inserted for pressurization of the fluid therein. The turbine vane receptacle operation has pair of surfaces opposing and spaced apart to each other. Each surface is radially tapered toward the center at a first inclination rate. Each turbine vane is provided edges opposing the surfaces of the turbine vane receptacle operation. The edges are correspondingly tapered at a second rate which is determined so that the spacing between the surface and the edge is gradually increased toward the rotation center of the turbine. This construction minimizes friction increasing when the pressure balance in floating seal formed between the surface and the edge is destroyed.

摘要翻译： 旋转涡轮机流体泵采用涡轮叶片容器开口和涡轮叶片的独特结构。 涡轮叶片容器连接到周向延伸的流体路径，其中涡轮叶片的自由端被插入以使流体在其中增压。 涡轮叶片容器操作具有彼此相对且间隔开的一对表面。 每个表面以第一倾斜速度朝向中心径向渐缩。 每个涡轮叶片设置成与涡轮叶片容纳器操作的表面相对的边缘。 边缘相应地以第二速率逐渐变细，第二速率被确定为使得表面和边缘之间的间隔朝向涡轮机的旋转中心逐渐增加。 当在表面和边缘之间形成的浮动密封件的压力平衡被破坏时，这种结构使摩擦增加最小化。

公开(公告)号：US07746672B2

公开(公告)日：2010-06-29

申请号：US12143744

申请日：2008-06-20

申请人： Yukihiro Nishikawa

发明人： Yukihiro Nishikawa

IPC分类号： H02M3/335

CPC分类号： H02M3/33515 ,  H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching power supply apparatus which includes a DC power supply, an isolation transformer having primary, secondary and tertiary windings, and a switching element, and in which, by turning the switching element on and off, the high-frequency voltage appearing in the secondary windings of the isolation transformer is rectified to obtain a DC output, power consumption can be decreased during standby (in burst mode) in particular by means of a control circuit which controls the turn-on and turn-off of the element and similar.

摘要翻译： 一种开关电源装置，包括直流电源，具有初级，次级和第三级绕组的隔离变压器和开关元件，并且其中通过使开关元件接通和断开，出现在次级侧的高频电压 隔离变压器的绕组被整流以获得DC输出，特别是通过控制元件的导通和关断等的控制电路，在待机期间（在突发模式中）可以降低功耗。

公开(公告)号：US20100110739A1

公开(公告)日：2010-05-06

申请号：US12591056

申请日：2009-11-05

申请人： Yukihiro Nishikawa

发明人： Yukihiro Nishikawa

IPC分类号： H02M7/217

CPC分类号： H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

摘要： A control system for a power factor correction circuit performs stabilized oscillation operation and suppresses switching frequency variation due to change of the AC power source. A control system includes a voltage error amplifier for outputting a voltage error signal obtained by amplifying a difference between a DC output voltage Vo and a command value Vref of the DC output voltage, a current command value generating circuit for outputting a current command value Vi for controlling the input current Iin, a comparator comparing an inductor current signal obtained by detecting an inductor current running in the switching element by a current detecting resistor with a magnitude of the output signal Vi from the multiplier, a timer circuit for setting an off-period of the switching element corresponding to the voltage Vd, and a reset-set type flip-flop circuit for setting an off-timing of the switching element after an elapse of the off-period.

摘要翻译： 用于功率因数校正电路的控制系统执行稳定的振荡操作并且抑制由于交流电源的变化引起的开关频率变化。 控制系统包括电压误差放大器，用于输出通过放大直流输出电压Vo与直流输出电压的指令值Vref之间的差来获得的电压误差信号;电流指令值产生电路，用于输出电流指令值Vi， 控制输入​​电流Iin的比较器，比较通过电流检测电阻检测开关元件中运行的电感器电流而获得的电感器电流信号与来自乘法器的输出信号Vi的大小的比较器，用于设定非周期性的定时器电路 对应于电压Vd的开关元件;以及复位置位型触发器电路，用于在断开时段之后设置开关元件的断开时序。