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    • 71. 发明申请
    • Switching Control Circuit and Self-Excited DC-DC Converter
    • 开关控制电路和自激式DC-DC转换器
    • US20060290333A1
    • 2006-12-28
    • US11426273
    • 2006-06-23
    • Iwao FukushiTomoaki NishiTakashi Noma
    • Iwao FukushiTomoaki NishiTakashi Noma
    • G05F1/573
    • H02M3/1588H02M1/32Y02B70/1466
    • A self-excited DC-DC converter comprises a switching element that chops a direct-current input voltage; a smoothing circuit that smoothes the chopped voltage to generate a DC output voltage; a switching control signal generation circuit that generates a switching control signal for the on/off control of the switching element by comparing a feedback voltage of the output voltage and a comparison voltage; an output correction circuit that adjusts the comparison voltage according to an error between the feedback voltage and the reference voltage and, when the output current is in the overcurrent state, reduces the level of the comparison voltage; an overcurrent protection signal generation circuit that, when the output current is in an overcurrent state, generates an overcurrent protection signal for turning off the switching element regardless of the switching control signal; and a delay circuit that delays the overcurrent protection signal. Also, a switching control circuit is provided therein.
    • 自激式DC-DC转换器包括切断直流输入电压的开关元件; 平滑电路,其使所述斩波电压平滑以产生DC输出电压; 切换控制信号生成电路,通过比较输出电压的反馈电压和比较电压,生成用于开关元件的导通/截止控制的开关控制信号; 输出校正电路,根据反馈电压和参考电压之间的误差调整比较电压,并且当输出电流处于过电流状态时,降低比较电压的电平; 过电流保护信号产生电路,当输出电流处于过电流状态时,不管开关控制信号如何,都产生用于关断开关元件的过电流保护信号; 以及延迟过电流保护信号的延迟电路。 另外,在其中设置开关控制电路。
    • 76. 发明授权
    • Data conversion method, data converter, and program storage medium
    • 数据转换方法,数据转换器和程序存储介质
    • US06281814B1
    • 2001-08-28
    • US09485042
    • 2000-02-01
    • Hideki SasaokaHirohiko KazatoTakashi Noma
    • Hideki SasaokaHirohiko KazatoTakashi Noma
    • H03M700
    • G06F17/148
    • A peak detecting section 121 detects the maximum values (peaks) of frequency distributions, at intervals of unit times, from the wavelet intensity signal output from an intensity computing section 113. More specifically, giving attention to frequency distributions of the wavelet intensity signal as the transform result obtained by a signal converting section 110 at predetermined time intervals, the peak detecting section 121 detects the peaks (maximum values) of the frequency intensity distributions at intervals of unit times (predetermined time intervals). Changes in various frequency features over time which are contained in the time-series signal obtained by a wavelet transform of the time-series signal can be quantitatively grasped more accurately.
    • 峰值检测部分121从强度计算部分113输出的小波强度信号中以单位时间间隔检测频率分布的最大值(峰值)。更具体地,注意小波强度信号的频率分布为 以预定的时间间隔变换由信号转换部分110获得的结果,峰值检测部分121以单位时间(预定时间间隔)的间隔检测频率强度分布的峰值(最大值)。随时间变化的各种频率特征 被包含在通过时间序列信号的小波变换获得的时间序列信号中,可以更精确地定量地掌握。
    • 77. 发明授权
    • Piezoelectric inverter
    • 压电式逆变器
    • US06184631B2
    • 2001-02-06
    • US09526961
    • 2000-03-16
    • Takashi NomaYasuyuki Morishima
    • Takashi NomaYasuyuki Morishima
    • H05B3702
    • H05B41/2822H05B41/3925
    • A piezoelectric inverter is disclosed. In the piezoelectric inverter, an input voltage controller, having a switching transistor and a current circulatingelement, converts an input voltage into a rectangular pulse alternating-current voltage. A piezoelectric transformer driver, having an inductive element, outputs an alternating-current voltage having a substantially constant frequency lower than the frequency of the alternating-current voltage output from the input voltage controller. A load current detect or detects a load current flowing through a discharge tube connected to a piezoelectric transformer. A duty factor controller controls the duty factor of the rectangular pulse of the input voltage controller in response to the output of the load current detector so that the load current coincides with a substantially constant target current value. The piezoelectric inverter thus controls the mean voltage of the alternating-current voltage applied to the piezoelectric transformer.
    • 公开了一种压电逆变器。 在压电逆变器中,具有开关晶体管和电流循环元件的输入电压控制器将输入电压转换为矩形脉冲交流电压。 具有感应元件的压电变压器驱动器输出具有比从输入电压控制器输出的交流电压的频率低的基本上恒定的频率的交流电压。 负载电流检测或检测流过连接到压电变压器的放电管的负载电流。 负载因子控制器响应于负载电流检测器的输出控制输入电压控制器的矩形脉冲的占空因数,使得负载电流与基本上恒定的目标电流值一致。 因此,压电变换器控制施加到压电变压器的交流电压的平均电压。
    • 78. 发明授权
    • Aromatic polyamide bristle
    • 芳香聚酰胺刷毛
    • US6033778A
    • 2000-03-07
    • US983138
    • 1998-01-21
    • Ryuichi KakiharaTakashi Noma
    • Ryuichi KakiharaTakashi Noma
    • D01F6/60D01F6/80D02G3/00
    • D01F6/605Y10T428/2913Y10T428/2969
    • The present invention provides an aromatic polyamide bristle exhibiting excellent chemical resistance to acid, alkali, etc., and good mechanical properties such as rigidity, strength and modulus and heat-resistance, suitable for industrial applications such as tension member, fishing line and catheter, having a single fiber fineness of 10 to 200 denier, a flatness of 3 or below and mechanical properties characterized by a tensile strength of 15 g/de or above, an elongation at break of 4.0% or below and an initial modulus of 500 g/de or above and formed from an optically isotropic solution.
    • PCT No.PCT / JP97 / 01688 Sec。 371日期1998年1月21日 102(e)日期1998年1月21日PCT提交1997年5月20日PCT公布。 出版物WO97 / 44510 日期1997年11月27日本发明提供了对酸,碱等具有优异耐化学性的芳香族聚酰胺刷毛,具有良好的机械性能如刚性,强度,模量和耐热性,适用于工业应用如张力构件, 钓鱼线和导管,单纤维纤度为10-200旦尼尔,平坦度为3或更低,机械特性为15g / de以上,拉伸断裂强度为4.0%以下,机械性能为4.0%以下,初期 模量为500g / de以上,由光学各向同性溶液形成。
    • 79. 发明授权
    • Piezoelectric transformer inverter
    • 压电变压器
    • US6013969A
    • 2000-01-11
    • US281683
    • 1999-03-30
    • Takashi NomaYasuyuki Morishima
    • Takashi NomaYasuyuki Morishima
    • H02M3/24H02M7/537H02M7/538H05B41/24H05B41/282H05B41/392H01L41/08
    • H02M7/48H05B41/2822
    • A boosting drive circuit includes first and second series combinations of a coil and a transistor. The two series combination of a coil and a transistor are connected in parallel. The middle points between the coils and the transistors are connected to respective primary electrodes of a piezoelectric transformer. The transistors are alternately operated with a two-phase drive circuit. Thus, a boosting drive circuit providing for the class "semi-E" operation is formed. A driving voltage control circuit controls an average voltage applied to the input terminal of the boosting drive circuit to ensure that current on the secondary electrode side of the piezoelectric transformer is controlled at a predetermined value is provided between the input power supply and the boosting drive circuit. A driving frequency control circuit changes the driving frequency of the transistors in the boosting drive circuit in such a manner that the phase difference between an alternating voltage applied to the primary electrodes of the piezoelectric transformer and an alternating current flowing in the load is controlled at a predetermined value.
    • 升压驱动电路包括线圈和晶体管的第一和第二串联组合。 线圈和晶体管的两个串联组合并联。 线圈和晶体管之间的中间点连接到压电变压器的主要电极。 晶体管与两相驱动电路交替工作。 因此,形成提供“半-E”类操作的升压驱动电路。 驱动电压控制电路控制施加到升压驱动电路的输入端子的平均电压,以确保在压电变压器的次级电极侧的电流被控制在预定值之间,在输入电源和升压驱动电路之间 。 驱动频率控制电路以这样的方式改变升压驱动电路中的晶体管的驱动频率,使得施加到压电变压器的主电极的交流电压与在负载中流动的交流电流之间的相位差被控制在 预定值。
    • 80. 发明授权
    • X-ray waveguide
    • X射线波导
    • US08971496B2
    • 2015-03-03
    • US13697497
    • 2011-05-20
    • Kohei OkamotoAtsushi KomotoWataru KuboHirokatsu MiyataTakashi Noma
    • Kohei OkamotoAtsushi KomotoWataru KuboHirokatsu MiyataTakashi Noma
    • G21K1/06G02B6/028G02B6/036H01J11/44H01J35/06
    • G21K1/06G21K2201/067H01J11/44H01J35/065
    • An X-ray waveguide showing a small propagation loss and having a waveguide mode with its phase controlled is provided. The X-ray waveguide including: a core for guiding an X-ray in a wavelength band that a real part of the refractive index of a material is 1 or less; and a cladding for confining the X-ray in the core, in which: the X-ray is confined in the core by total reflection at a interface between the core and the cladding; in the core multiple materials having different real parts of the refractive index are periodically arranged; and a waveguide mode of the X-ray waveguide is such that the number of antinodes or nodes of an electric field intensity distribution or a magnetic field intensity distribution of the X-ray coincides with the number of periods of the periodic structure in a direction perpendicular to a waveguiding direction of the X-ray in the core.
    • 提供了具有小的传播损耗并且具有其相位控制的波导模式的X射线波导。 X射线波导包括:用于引导材料的折射率的实部的1个以下的波长带的X射线的芯; 以及用于将X射线限制在芯中的包层,其中:通过在芯和包层之间的界面处的全反射将X射线限制在芯中; 在具有折射率不同的实部的核心多个材料中定期布置; 并且X射线波导的波导模式使得X射线的电场强度分布或磁场强度分布的波腹或节点的数量与垂直方向上的周期性结构的周期数相一致 到核心中的X射线的波导方向。