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    • 1. 发明申请
    • Control device for three phase ac generator-motor
    • 三相交流发电机控制装置
    • US20060066271A1
    • 2006-03-30
    • US10953718
    • 2004-09-28
    • Tadashi YamazakiJunichi TakahashiTakeo Fukushima
    • Tadashi YamazakiJunichi TakahashiTakeo Fukushima
    • H02P5/20
    • H02M7/797F02N11/04H02M7/219H02P9/00H02P27/06
    • For a control circuit of a three-phase alternating current motor-generator, which serves as a three-phase rectifier circuit for charging a battery with power generated by driving the motor-generator as a generator and which also serves as a three-phase inverter circuit for driving the motor-generator as a motor by using a battery and uses MOSFETs as control elements for each of three phases, a control device is provided, which, in case of driving the motor-generator as the three-phase ac generator, uses means for making synchronous rectification by using MOSFETs only on the negative potential side of respective phases and means for delaying and advancing an electric angle of the current carrying control timing by gate control of MOSFETs on negative potential side. When operating the motor-generator to charge the battery, this control device can easily perform the current carrying control for three-phase rectification and effectively generate a constant charging voltage without affection of variations in rotation speed and load.
    • 作为三相交流电动发电机的控制电路,其作为三相整流电路,用于通过驱动作为发电机的电动发电机产生的电力对电池充电,并且还用作三相逆变器 通过使用电池驱动电动发电机作为电动机的电路,并且使用MOSFET作为三相中的每一个的控制元件,提供了一种控制装置,其在驱动作为三相交流发电机的电动发电机的情况下, 使用仅在各相的负电位侧使用MOSFET进行同步整流的装置,以及用于通过在负电位侧的MOSFET的栅极控制来延迟和前进载流控制定时的电角度的装置。 当操作电动发电机对电池充电时,该控制装置可以容易地执行用于三相整流的负载控制,并且有效地产生恒定的充电电压,而不影响转速和负载的变化。
    • 2. 发明申请
    • Control device for three phase ac generator-motor
    • 三相交流发电机控制装置
    • US20060066272A1
    • 2006-03-30
    • US10953720
    • 2004-09-28
    • Tadashi YamazakiJunichi Takahashi
    • Tadashi YamazakiJunichi Takahashi
    • H02P5/20
    • H02M7/797
    • A control device of a three-phase alternating current motor-generator, which works as an inverter circuit for driving the motor-generator as a motor by using a battery and also functions as a three-phase rectifier circuit for driving the motor-generator as a generator for producing output power for charging a battery. The control circuit uses MOS field-effect transistors as control elements for respective phases. When the motor-generator is driven as the three-phase ac generator, the control device uses means for conducting synchronous rectification by using MOSFETs only on the negative potential side for respective phases. This can simplify the rectifying operation, reduce the rectification loss and improve the battery charging efficiency.
    • 作为三相交流电动发电机的控制装置,其作为用于通过使用电池驱动作为电动机的电动发电机的逆变器电路,并且还用作用于驱动电动发电机的三相整流电路 用于产生用于对电池充电的输出电力的发生器。 控制电路使用MOS场效应晶体管作为各相的控制元件。 当电动发电机作为三相交流发电机驱动时,控制装置使用仅在负电位侧对各相进行同步整流的装置。 这样可以简化整流运行,减少整流损耗,提高电池充电效率。
    • 5. 发明授权
    • Receiver and receiving method of the receiver
    • 接收机的接收和接收方法
    • US08301208B2
    • 2012-10-30
    • US12472741
    • 2009-05-27
    • Yusaku KatsubeMasaaki YamadaJunichi Takahashi
    • Yusaku KatsubeMasaaki YamadaJunichi Takahashi
    • H04M1/00H04B1/38
    • H04L27/3854H04L7/041H04L27/0014
    • The receiver includes a low noise amplifier, a local signal generator, a first mixer, a second mixer, a first amplifier, a second amplifier, a first A/D converter, a second A/D converter, and a signal level detection unit. A detection signal from at least one terminal of the first A/D converter is supplied to an input terminal of the signal level detection unit, thereby generating a reception start signal from the output terminal. Before an RF reception signal is received, a first signal processing unit containing the first mixer, the first amplifier, and the first A/D converter is controlled to an active state, and a second signal processing unit containing the second mixer, the second amplifier, and the second A/D converter is controlled to a low power consumption state. After the RF reception signal is received, the second signal processing unit is controlled to the active state.
    • 接收机包括低噪声放大器,本地信号发生器,第一混频器,第二混频器,第一放大器,第二放大器,第一A / D转换器,第二A / D转换器和信号电平检测单元。 来自第一A / D转换器的至少一个端子的检测信号被提供给信号电平检测单元的输入端,从而从输出端产生接收开始信号。 在接收到RF接收信号之前,将包含第一混频器,第一放大器和第一A / D转换器的第一信号处理单元控制为有效状态,以及包含第二混频器的第二信号处理单元,第二放大器 并且第二A / D转换器被控制到低功耗状态。 在RF接收信号被接收之后,第二信号处理单元被控制到活动状态。
    • 9. 发明申请
    • POLYMER CLAD OPTICAL FIBER
    • 聚合物光纤
    • US20090196560A1
    • 2009-08-06
    • US12439376
    • 2008-03-14
    • Kenji OkadaJunichi Takahashi
    • Kenji OkadaJunichi Takahashi
    • G02B6/036
    • G02B6/02033G02B6/03605G02B6/03627G02B6/03633
    • A polymer clad optical fiber is provided in which, if the diameter of an inner core is taken as a1, and the diameter of an outer core is taken as a2, and if a ratio X (which=a22/a12) between a cross-sectional area of the inner core and a cross-sectional area of the outer core is within a range of 1.8≦X≦2.2, and if a relative refractive index difference between the inner core and the outer core is taken as Δ1, and if a relative refractive index difference between the outer core and a cladding is taken as Δ2, then for a parameter Y which is defined as Y=Δ1/Δ2, when a high temperature is taken as Ymax and a low temperature is taken as Ymin, a relationship is established in which, when X is within a range of 1.8≦X≦2.0, then 0.25≦Ymin≦0.84X−0.68, and Ymax is 0.25≦Ymax≦0.84X−0.68, and, when X is within a range of 2.0≦X≦2.2, Ymin is 0.48X−0.71≦Ymin≦−2/9X+13/9, and Ymax is 0.48X−0.71≦Ymax≦−2/9X+13/9.
    • 提供一种聚合物包覆光纤,其中如果将内芯的直径取为a1,将外芯的直径作为a2,并且如果将内芯的直径作为a的比例X(= a22 / a12) 内芯的截面面积和外芯的横截面面积在1.8 <= X <= 2.2的范围内,并且如果将内芯和外芯之间的相对折射率差作为Delta1,并且 如果将外芯和包层之间的相对折射率差作为Δ2,则对于定义为Y = Delta1 / Delta2的参数Y,当将高温作为Ymax,将低温作为Ymin时, 建立了当X在1.8 <= X <= 2.0的范围内时,0.25 <= Ymin <= 0.84X-0.68,Ymax为0.25 <= Ymax <= 0.84×-0.68的关系, 当X在2.0 <= X <= 2.2的范围内时,Ymin为0.48X-0.71 <= Ymin <= - 2 / 9X + 13/9,Ymax为0.48X-0.71 <= Ymax <= -2 / 9X + 13/9。