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1.发明授权公开(公告)号：US07307372B2
公开(公告)日：2007-12-11
申请号：US11477306
申请日：2006-06-29
申请人： Kenji Uchino , Shuxiang Dong , Michael T. Strauss
发明人： Kenji Uchino , Shuxiang Dong , Michael T. Strauss
摘要： A rotary ultrasonic piezoelectric motor is provided and a method of exciting a flexure traveling wave to drive the motor. The motor includes a stator having a piezoelectric ceramic disc polarized in the radial direction and bounded by a top electrode and a segmented bottom electrode. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a rotor operatively connected to the stator, and the stator is driven to rotate through a frictional force between the rotor and the stator due to the traveling wave deformation of the stator. A linear ultrasonic piezoelectric motor and method of exciting a flexure traveling wave to linearly drive the motor is provided. The motor includes a stator having a rectangular piezoelectric ceramic plate that is polarized in the longitudinal direction. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a slider operatively connected to the stator, and the stator is driven to move linearly through a frictional force between the slider and the stator due to the traveling wave deformation of the stator.
摘要翻译： 提供了一种旋转式超声波压电电动机和激励挠曲行波来驱动电动机的方法。 电动机包括定子，该定子具有在径向上偏振并由顶部电极和分段的底部电极限定的压电陶瓷盘。 电动机还包括用于向底部电极段施加两对交流电压的电源，以激励定子中的剪切模式振动，导致定子中的剪切模式挠曲行波。 电动机还包括可操作地连接到定子的转子，并且由于定子的行波变形，定子被驱动以通过转子和定子之间的摩擦力旋转。 提供一种线性超声波压电电动机和激励挠曲行波以线性驱动电动机的方法。 电动机包括具有沿纵向极化的矩形压电陶瓷板的定子。 电动机还包括用于向底部电极段施加两对交流电压的电源，以激励定子中的剪切模式振动，导致定子中的剪切模式挠曲行波。 电动机还包括可操作地连接到定子的滑块，并且由于定子的行波变形，定子被驱动以通过滑块和定子之间的摩擦力直线移动。
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2.发明授权公开(公告)号：US07095160B2
公开(公告)日：2006-08-22
申请号：US10855260
申请日：2004-05-26
申请人： Kenji Uchino , Shuxiang Dong , Michael T. Strauss
发明人： Kenji Uchino , Shuxiang Dong , Michael T. Strauss
摘要： A rotary ultrasonic piezoelectric motor is provided and a method of exciting a flexure traveling wave to drive the motor. The motor includes a stator having a piezoelectric ceramic disc polarized in the radial direction and bounded by a top electrode and a segmented bottom electrode. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a rotor operatively connected to the stator, and the stator is driven to rotate through a frictional force between the rotor and the stator due to the traveling wave deformation of the stator. A linear ultrasonic piezoelectric motor and method of exciting a flexure traveling wave to linearly drive the motor is provided. The motor includes a stator having a rectangular piezoelectric ceramic plate that is polarized in the longitudinal direction. The motor also includes a power source for applying two pairs of alternating voltages to the bottom electrode segments to excite a shear-shear mode vibration in the stator, resulting in a shear-shear mode flexure traveling wave in the stator. The motor further includes a slider operatively connected to the stator, and the stator is driven to move linearly through a frictional force between the slider and the stator due to the traveling wave deformation of the stator.
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