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    • 3. 发明授权
    • Ultrasonic motor
    • 超声波电机
    • US08294334B2
    • 2012-10-23
    • US13019449
    • 2011-02-02
    • Hiroyuki TakizawaAkira MatsuiTomoki Funakubo
    • Hiroyuki TakizawaAkira MatsuiTomoki Funakubo
    • H01L41/08
    • H02N2/12
    • In an ultrasonic motor, an elliptical vibration is generated by combining a longitudinal primary resonance vibration resulting from an expansion and a contraction of a vibrator in a direction of a central axis and a torsional secondary resonance vibration or a torsional tertiary resonance vibration resulting from twisting around the central axis. A dimension ratio of a rectangle of the vibrator is chosen such that a resonance frequency of the longitudinal primary resonance vibration and a resonance frequency of the torsional secondary resonance vibration or the torsional tertiary resonance vibration match. The vibrator includes a plurality of regions in a surface orthogonal to the central axis, and deformations of the regions adjacent to each other along the direction of the central axis are mutually different. The vibrator expands and contracts in a direction orthogonal to a polarization direction thereof.
    • 在超声波马达中,通过将由振动器的膨胀和收缩产生的纵向主共振振动在中心轴方向和扭转二次共振振动或由扭转引起的扭转三次共振振动组合而产生椭圆振动 中心轴。 选择振动器的矩形的尺寸比,使得纵向主共振振动的共振频率和扭转二次共振振动或扭转三次共振振动的共振频率相匹配。 振动器包括在与中心轴线正交的表面中的多个区域,并且沿着中心轴线的方向彼此相邻的区域的变形是相互不同的。 振动器在与其偏振方向正交的方向上膨胀和收缩。
    • 5. 发明申请
    • ULTRASONIC MOTOR
    • 超声波电机
    • US20120019103A1
    • 2012-01-26
    • US13184849
    • 2011-07-18
    • Akira MATSUI
    • Akira MATSUI
    • H02N2/12
    • H01L41/0913H01L41/083H02N2/0045H02N2/103
    • According to one embodiment, an ultrasonic motor includes a transducer, a driven member, a pressing mechanism unit. The transducer includes stacked piezoelectric sheets on which internal electrodes are formed. The internal electrodes form driving activated areas and vibration detection activated areas in the transducer. The driving activated areas are located in portions which correspond to a node of the longitudinal vibration and an anti node of twisting vibration, so as to be symmetrical about a central plane in the stacking direction and a plane which is perpendicular to the stacking direction and includes the center axis, and are polarized in the stacking direction. The vibration detection activated areas are located in portions which correspond to a node of the longitudinal vibration and an anti node of the twisting vibration and are closer to the central plane than the driving activated areas, and are polarized in the stacking direction.
    • 根据一个实施例,超声波马达包括换能器,从动构件,按压机构单元。 换能器包括形成有内部电极的堆叠的压电片。 内部电极形成传感器的激活区域和振动检测激活区域。 驱动活化区域位于与纵向振动的节点和扭转振动的反节点相对应的部分中,以使其在堆叠方向上的中心平面和垂直于层叠方向的平面对称,并且包括 中心轴,并且在堆叠方向上极化。 振动检测激活区域位于与纵向振动的节点和扭转振动的反节点相对应的部分中,并且比驱动活动区域更靠近中心平面,并且在堆叠方向上被极化。
    • 8. 发明申请
    • ULTRASONIC MOTOR
    • 超声波电机
    • US20110204748A1
    • 2011-08-25
    • US13031967
    • 2011-02-22
    • Akira MATSUI
    • Akira MATSUI
    • H02N2/12
    • H02N2/103H01L41/0913H02N2/0045
    • An elliptical vibration is generated by combining a longitudinal primary resonance vibration of the vibrator resulting from an expansion and a contraction of the vibrator in a direction of the central axis and a torsional resonance vibration resulting from twisting of the vibrator around the central axis as a torsional axis. The dimension ratio of the rectangle of the vibrator is chosen such that a resonance frequency of the longitudinal primary resonance vibration resulting from the expansion and the contraction of the vibrator in the direction of the central axis and a resonance frequency of the torsional resonance vibrations resulting from twisting of the vibrator around the central axis as the torsional axis match. The ultrasonic motor further includes a vibration detecting electrode layer.
    • 通过将由振动器的膨胀和收缩产生的振动器的纵向初级共振振动在中心轴线的方向上组合而产生的椭圆振动以及由于振动器围绕中心轴的扭转而产生的扭转共振振动作为扭转 轴。 选择振子的矩形的尺寸比,使得由振动器在中心轴方向的膨胀和收缩所产生的纵向主共振振动的共振频率以及由此产生的扭转共振振动的共振频率 当扭转轴匹配时,振动器围绕中心轴线的扭转。 超声波马达还包括振动检测电极层。
    • 9. 发明授权
    • Receiving system
    • 接收系统
    • US07912434B2
    • 2011-03-22
    • US11631469
    • 2005-06-23
    • Seiichiro KimotoManabu FujitaToshiaki ShigemoriAyako NagaseAkira MatsuiKazutaka Nakatsuchi
    • Seiichiro KimotoManabu FujitaToshiaki ShigemoriAyako NagaseAkira MatsuiKazutaka Nakatsuchi
    • H04B1/06
    • A61B5/07
    • To realize a receiving system that can excellently receive radio signals before and after a body insertable device, which is a radio signal source, is inserted into a subject, the receiving system has a first receiving antenna (1), a second receiving antenna (2), and a receiving apparatus (3). The first receiving antenna (1) is used when the body insertable device is outside the subject. The second receiving antenna (2) is used when the body insertable device is inserted into the subject. The receiving apparatus (3) performs a receiving processing on radio signals received through the first receiving antenna (1) or the second receiving antenna (2). In the receiving system, a receiving antenna connected to an antenna connector (13) provided in the receiving apparatus (3) is switched between the first receiving antenna (1) and the second receiving antenna (2) corresponding to a difference in propagation states of radio signals transmitted from the body insertable device before and after the body insertable device is inserted into the subject. Consequently, the receiving system that can excellently receive the radio signals before and after the body insertable device is inserted into the subject is realized.
    • 为了实现在作为无线电信号源的身体可插入设备之前和之后能够优良地接收无线电信号的接收系统被插入到被摄体中,接收系统具有第一接收天线(1),第二接收天线(2 )和接收装置(3)。 当身体可插入装置在对象外部时,使用第一接收天线(1)。 当身体可插入装置插入到被摄体中时,使用第二接收天线(2)。 接收装置(3)对通过第一接收天线(1)或第二接收天线(2)接收的无线信号进行接收处理。 在接收系统中,连接到设置在接收装置(3)中的天线连接器(13)的接收天线在第一接收天线(1)和第二接收天线(2)之间切换,对应于传播状态的差异 在身体插入装置插入被检体之前和之后从身体插入装置传送的无线电信号。 因此,可以实现在主体插入装置被插入到对象之前和之后能够良好地接收无线电信号的接收系统。