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    • 6. 发明申请
    • Particle Counter
    • 粒子计数器
    • US20080148869A1
    • 2008-06-26
    • US11884725
    • 2007-01-30
    • Yoshio OtaniKazuo Ichijo
    • Yoshio OtaniKazuo Ichijo
    • G01N1/02
    • G01N15/06G01N15/065G01N15/0656G01N15/1459G01N35/1095G01N2015/1062G01N2015/1486
    • The object of the present invention is to provide a particle counter which can accurately count the number of particles contained in fluid where the number concentration of particles is high. The particle counter includes a particle removing portion for removing particles contained in fluid at a predetermined rate, a sensor portion for counting the particles passing through the particle removing portion, and a particle number correcting means comprising a characteristic data memory and a digital signal processor for performing correction processing to the number of the particles counted in the sensor portion by using removal characteristics of the particle removing portion with respect to the particle diameter.
    • 本发明的目的是提供一种粒子计数器,其能够精确地计数粒子的数量浓度高的流体中含有的粒子的数量。 颗粒计数器包括用于以预定速率去除包含在流体中的颗粒的颗粒去除部分,用于对通过颗粒去除部分的颗粒进行计数的传感器部分,以及包括特征数据存储器和数字信号处理器的颗粒数校正装置, 通过使用颗粒除去部分相对于粒径的去除特性,对传感器部分中计数的颗粒数进行校正处理。
    • 9. 发明授权
    • Method of driving a stepping motor
    • 驱动步进电机的方法
    • US4481454A
    • 1984-11-06
    • US500230
    • 1983-06-01
    • Yoshio Otani
    • Yoshio Otani
    • H02P8/08H02P8/04H02P8/10H02P8/30H02P8/34H02P8/36H02K29/04
    • H02P8/30H02P8/04H02P8/10H02P8/34H02P8/36
    • A stepping motor is rotated stepwise in angular increments by successively exciting a plurality of phases. When the stepping motor is to be stopped, the phase or phases which have been finally excited immediately prior to motor stop control are kept intermittently excited to stop the stepping motor. For starting the stepping motor again, the phase or phases being excited in the stop mode are supplied with continuous currents for an interval of time longer than the period of each single pulse applied to the phase or phases excited in the stop mode and shorter than the period in which a current flowing through the excited phase or phases become saturated, and thereafter the phases starting with a phase or phases following the phase or phases excited with the continuous currents are successively supplied with currents.
    • 通过连续地激励多个相位,步进电机以角度增量逐步旋转。 当步进电机停止时,马达停止控制之前立即被激励的相位被间歇地激励以停止步进马达。 为了再次启动步进电机,在停止模式下被激励的相或相被提供有连续电流,时间长于施加到在停止模式中被激励的相或相的每个单个脉冲的周期,并且短于 其中流过被激发的相或相的电流饱和,然后在连续电流激发的相或相之后的相或相开始的相位连续地供给电流。