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    • 61. 发明授权
    • Ultrasonic motor and driving for the ultrasonic motor
    • 超声波电机和超声波电机的驱动装置
    • US5631517A
    • 1997-05-20
    • US439062
    • 1995-05-08
    • Kazuo KatoTakashi SaseKikuo TomitaShuzo OshimaMuneo ChibaTomohiko DoukenKazuyoshi Takizawa
    • Kazuo KatoTakashi SaseKikuo TomitaShuzo OshimaMuneo ChibaTomohiko DoukenKazuyoshi Takizawa
    • H01L41/04H01L41/09H02N2/16H01L41/08
    • H02N2/105H02N2/147
    • An electrostrictive revolution type ultrasonic motor includes a piezoelectric ceramic disk shaped stator and a rotor. The piezoelectric ceramic disk shaped stator has an eccentric movement via excitation by two phase pulse like voltage. The rotor is fitted around the circumference of the stator and is transmitted by a rotating torque due to the eccentric movement via frictional contact therebetween. The rotor is formed of a plastic material by injection molding to achieve a reduction of a size variation of the rotor and a stable contact with the stator. A high and stable rotating torque is thereby obtained with a reduced production cost. Further, a driving device for the ultrasonic motor which varies the frequency of a voltage applied to the ultrasonic motor in a stepped manner discriminates the magnitude of the corresponding motor currents and drives the ultrasonic motor with the frequency which causes the maximum motor current. In this manner, a simple structured and low cost driving device which operates at a high speed and at a high resolution with a high efficiency is achieved.
    • 电致伸缩型超声波马达包括压电陶瓷盘形定子和转子。 压电陶瓷盘形定子通过两相相位脉冲(如电压)经由激励而具有偏心运动。 转子安装在定子的周围,并由于偏心运动通过其间的摩擦接触而由旋转转矩传递。 转子由塑料材料通过注射成型形成,以实现转子尺寸变化的减小和与定子的稳定接触。 由此可以降低制造成本而获得高稳定的转矩。 此外,用于以阶梯式方式改变施加到超声波马达的电压的频率的超声波马达的驱动装置识别相应电动机电流的大小,并以引起最大电动机电流的频率驱动超声波电动机。 以这种方式,实现了以高速和高分辨率高效率地操作的简单的结构化和低成本的驱动装置。
    • 67. 发明授权
    • Thermotherapy apparatus
    • 热疗仪
    • US5224492A
    • 1993-07-06
    • US713358
    • 1991-06-11
    • Noriyuki TakahashiTamaki SakamotoJun ShimoyamaEiji KasaiMakoto SaitoJin-ichi MatsudaKazuo Kato
    • Noriyuki TakahashiTamaki SakamotoJun ShimoyamaEiji KasaiMakoto SaitoJin-ichi MatsudaKazuo Kato
    • A61B5/00A61N1/08A61N1/40
    • A61B5/417A61B5/015A61N1/08A61N1/403
    • In a CT image of a living body, contours of internal organs thereof are discriminated. Parameters are beforehand stored in a memory for a plurality of internal organs of the living body. Applicators are attached onto the living body and then a high frequency power is applied to electrodes disposed therein so as to heat an internal portion of the body. Based on an intensity of an electric field generated in the body due to the applied power and the parameters stored in the memory, a temperature distribution on the CT image is estimated. To retain an estimated temperature of an objective tumor at a predetermined target temperature, the high frequency power and the cooling water in the applicators are controlled. In the estimation of the temperature distribution, the parameters of the living body are repeatedly corrected to minimize a discrepancy between a temperature measured at a preset position and an estimated temperature associated therewith.
    • 在活体的CT图像中,鉴别其内脏的轮廓。 参数预先存储在生物体的多个内部器官的存储器中。 施加器附着在活体上,然后将高频电力施加到设置在其中的电极,以加热身体的内部。 基于由于所施加的功率和存储在存储器中的参数而在体内产生的电场的强度,估计CT图像上的温度分布。 为了将目标肿瘤的估计温度保持在预定目标温度,控制施加器中的高频功率和冷却​​水。 在估计温度分布时,重复校正生物体的参数,以使在预设位置测量的温度与与其相关联的估计温度之间的差异最小化。
    • 70. 发明授权
    • Local heating apparatus and cavity resonator for local heating
    • 本地加热器的本地加热装置和腔室谐振器
    • US5090423A
    • 1992-02-25
    • US425203
    • 1989-10-06
    • Jinichi MatsudaKazuo Kato
    • Jinichi MatsudaKazuo Kato
    • A61N1/40A61N5/02
    • A61N5/02
    • A heating apparatus suitable for use in medical heat treatment of an affected portion of a human body employs a cavity resonator supplied with high-frequency energy from a high-frequency power supply unit. The cavity resonator comprises a cavity formed of a conductive material and at least one inner protrusion in said cavity generating a standing wave electric field for heating a body or body part introduced into the cavity. The inner protrusion may be a separate conductor or may be formed by deforming a portion of the conductor forming the cavity. A highly concentrated standing wave electric field and a surrounding electromagnetic field are produced in the cavity resonator when it is energized from the high-frequency power supply unit. The concentrated standing wave electric field intensively heats a desired local portion of the body and deep parts of the body may be heated satisfactorily.
    • PCT No.PCT / JP89 / 00163 Sec。 371日期:1989年10月6日 102(e)日期1989年10月6日PCT 1989年2月17日PCT公布。 出版物WO89 / 07469 日本1989年8月24日。适用于人体受影响部位的医疗热处理的加热装置采用从高频电源单元供给高频能量的空腔谐振器。 空腔谐振器包括由导电材料形成的空腔,并且在所述空腔中的至少一个内部突起产生驻波电场,用于加热引入空腔的主体或主体部分。 内部突起可以是单独的导体,或者可以通过使形成腔的导体的一部分变形而形成。 当空腔谐振器从高频电源单元通电时,产生高度集中的驻波电场和周围的电磁场。 集中的驻波电场集中地加热身体的期望的局部部分,并且可以令人满意地加热身体的深部。