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    • 1. 发明申请
    • DEAD-TIME COMPENSATOR AND METHOD FOR PERMANENT MAGNET SYNCHRONOUS DRIVES
    • 死时间补偿器和永磁同步驱动方法
    • WO2010010987A1
    • 2010-01-28
    • PCT/KR2008/005275
    • 2008-09-08
    • CHANGWON NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION CORPSKIM, Sam YoungLEE, Woo TaikPARK, Seung YubJOO, Seok Min
    • KIM, Sam YoungLEE, Woo TaikPARK, Seung YubJOO, Seok Min
    • H02P27/08
    • H02P25/024H02M2001/385
    • Disclosed is a dead-time compensator for a PMSM drive and a compensation method using the same. The compensator and method compensate for distortion of output voltages resulting from dead time of a PWM inverter, which drives the PMSM, and nonlinear operation characteristics of semiconductor switches for power. The method includes the steps of acquiring two-phase stationary coordinate unit back-electromotive force vector from information regarding rotor position; acquiring an increment of the rotor position with regard to a sampling period; obtaining a two-phase stationary coordinate flux linkage increment from an increment of a two-phase stationary coordinate current and a PWM inverter output reference voltage; acquiring an output error voltage of the PWM inverter from the unit back-electromotive force vector, the increment of the rotor position, and the flux linkage increment; and adding the error voltage to the synchronously rotating coordinate inverter output reference voltage.
    • 公开了用于PMSM驱动器的死区补偿器和使用它的补偿方法。 补偿器和方法补偿由驱动PMSM的PWM逆变器的死区时间引起的输出电压失真以及功率半导体开关的非线性运算特性。 该方法包括从关于转子位置的信息获取两相静止坐标单位反电动势矢量的步骤; 获取关于采样周期的转子位置的增量; 从两相静止坐标电流和PWM逆变器输出参考电压的增量获得两相静止坐标磁链增量; 从单位反电动势矢量,转子位置的增量和磁链增量获取PWM逆变器的输出误差电压; 并将误差电压加到同步旋转坐标反相器输出参考电压上。
    • 2. 发明申请
    • APPARATUS FOR DIGITAL IMAGING PHOTODETECTOR USING GAS ELECTRON MULTIPLIER
    • 使用气体电子倍增器的数字成像光电装置的设备
    • WO2007061235A1
    • 2007-05-31
    • PCT/KR2006/004949
    • 2006-11-23
    • CHANGWON NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION CORPS.HAHN, Chang HieKIM, Il-GonKIM, Won-JeongYU, Jaehoon
    • HAHN, Chang HieKIM, Il-GonKIM, Won-JeongYU, Jaehoon
    • G01J1/44
    • H01J47/02
    • The present invention provides a digital imaging photodetector with a gas electron multiplier. The digital imaging photodetector comprises a gas electron multiplier detector. The gas electron multiplier detector includes a photoelectric converter for converting incident light into photo- electrons or Compton electrons; a gas electron multiplier (GEM) for receiving the photoelectrons or Compton electrons from the photoelectric converter and multiplying them; and a readout unit for receiving an electrical signal indicating a position where an electron cloud multiplied in the gas electron multiplier arrives on an anode, recognizing coordinates of the electron cloud based on the received signal, and outputting the coordinates of the electron cloud. According to the digital imaging photodetector of the present invention, real-time imaging of image information can be achieved by multiplying photoelectrons or Compton electrons, which are discharged due to a photoelectric effect or a Compton effect induced by visible rays, ultraviolet rays or X-rays, using the gas electron multiplier.
    • 本发明提供一种具有气体电子倍增器的数字成像光电检测器。 数字成像光电检测器包括气体电子倍增器检测器。 气体电子倍增器检测器包括用于将入射光转换成光电子或康普顿电子的光电转换器; 用于从光电转换器接收光电子或康普顿电子并将它们相乘的气体电子倍增器(GEM); 以及读出单元,用于接收指示在气体电子倍增器中乘积的电子云到达阳极的位置的电信号,基于接收信号识别电子云的坐标,并输出电子云的坐标。 根据本发明的数字成像光电检测器,可以通过将由于光电效应放出的光电子或康普顿电子相乘或由可见光,紫外线或X-射线引起的康普顿效应相乘来实现图像信息的实时成像, 使用气体电子倍增器。