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    • 53. 发明授权
    • High frequency switch and mobile communication equipment
    • 高频开关和移动通信设备
    • US06586786B2
    • 2003-07-01
    • US10032856
    • 2001-12-27
    • Shoichi KitazawaMasaharu TanakaToshio IshizakiToru Yamada
    • Shoichi KitazawaMasaharu TanakaToshio IshizakiToru Yamada
    • H01L2980
    • H01P1/15H01L2924/0002H01L2924/00
    • A high frequency switch, has a transmitting terminal; a receiving terminal; an antenna terminal; a first diode having an anode electrically connected to the transmitting terminal and a cathode electrically connected to the antenna terminal; a second diode having an anode connected through a transmission line of ¼ wavelength to the antenna terminal which is electrically connected to the receiving terminal, and having the side of a cathode grounded; and a control terminal provided to a node between the transmitting terminal and the first anode, wherein the first and second diodes have a tradeoff relationship between ON resistance thereof and capacitance between the anode and the cathode, and the ON resistance of the first diode is lower than the ON resistance of the second diode, and the capacitance of the second diode in the OFF state is smaller than the capacitance of the first diode in the OFF state.
    • 高频开关,发射端子,接收端子,天线端子,第一二极管,具有与发射端子电连接的阳极和与天线端子电连接的阴极;第二二极管,具有通过传输线连接的阳极 对天线端子的1/4波长,电连接到接收端子,并且阴极侧接地; 以及提供给发送端子和第一阳极之间的节点的控制端子,其中第一和第二二极管在其导通电阻和阳极和阴极之间的电容之间具有折衷关系,并且第一二极管的导通电阻低于 第二二极管的导通电阻和第二二极管在OFF状态下的电容小于第一二极管在OFF状态下的电容。
    • 57. 发明授权
    • Power supply apparatus
    • 电源设备
    • US5831240A
    • 1998-11-03
    • US554529
    • 1995-11-07
    • Masao KatookaToru AraiShigeru OkamotoKenzo DanjoMasaharu Tanaka
    • Masao KatookaToru AraiShigeru OkamotoKenzo DanjoMasaharu Tanaka
    • B23K9/32B23K9/10
    • B23K9/323
    • A power supply apparatus includes first and second spaced-apart, substantially parallel panels, and a chassis disposed in substantially perpendicular to and between the first and second panels. Opposite edges of the chassis are coupled to the respective ones of the first and second panels to thereby partition the space between the first and second panels into upper and lower regions. A power supply circuit includes heat-generating electric components disposed in the lower region, and non-heat-generating components disposed in the upper region. The chassis has an opening therein and a heat sink is mounted to close the opening in the chassis. A semiconductor module of the power supply circuit is mounted on the surface facing to the upper region of the heat sink.
    • 电源装置包括第一和第二间隔开的基本上平行的面板,以及基本上垂直于第一和第二面板之间且在其之间设置的底架。 底盘的相对边缘联接到第一和第二面板中的相应边缘,从而将第一和第二面板之间的空间分隔成上部和下部区域。 电源电路包括设置在下部区域中的发热电气部件和设置在上部区域中的非发热部件。 底盘在其中具有开口,并且安装散热器以关闭底盘中的开口。 电源电路的半导体模块安装在面向散热器上部区域的表面上。
    • 59. 发明申请
    • ELECTRIC POWER STEERING CONTROL SYSTEM
    • 电力转向控制系统
    • US20100235047A1
    • 2010-09-16
    • US12160438
    • 2007-03-12
    • Masahiko KurishigeTakayuki KifukuSeiji SakanishiMasaharu TanakaSeiji SawadaAkinobu SugiyamaHanako Hamada
    • Masahiko KurishigeTakayuki KifukuSeiji SakanishiMasaharu TanakaSeiji SawadaAkinobu SugiyamaHanako Hamada
    • G06F19/00H02P6/10
    • B62D5/0463B62D5/0472
    • Intended is to solve the problem of an increase in the cost of an electric power steering control system, the oscillations of which are suppressed by estimating and feeding back the oscillation frequency components of a motor rotating speed through an observer from a steering torque signal and a current signal for driving a motor, no matter whether a phase compensator might be made of an analog circuit or a software. In order to solve this problem, there is provided the electric power steering control system, in which the phase compensator of the steering torque is made of an analog circuit and in which an anti-phase compensator is made over the software of a microcomputer, thereby to eliminate the changes in the gain and the phase by the phase compensator of the analog circuit near the oscillation frequency, so that the steering torque signal equivalent to that of no phase compensation necessary for the computation at the observer is computed from the phase-compensated steering torque signal.
    • 本发明是为了解决电动助力转向控制系统的成本增加的问题,其通过从转向转矩信号估计并反馈观察者的电动机转速的振荡频率分量来抑制振荡, 用于驱动电机的电流信号,无论相位补偿器是由模拟电路还是软件构成。 为了解决这个问题,提供了一种电动助力转向控制系统,其中转向转矩的相位补偿器由模拟电路构成,并且在微型计算机的软件上形成反相补偿器,由此 以消除靠近振荡频率的模拟电路的相位补偿器的增益和相位的变化,从而从相位补偿计算出在观测器处计算所需的与无相位补偿相等的转向转矩信号 转向转矩信号。