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公开(公告)号：US07960895B2
公开(公告)日：2011-06-14
申请号：US12114861
申请日：2008-05-05
IPC分类号： H01L41/08
CPC分类号： H02N2/06 , H01L41/0906 , H02N2/004 , H02N2/0075 , H02N2/026 , H02N2/103 , H02N2/14 , H02N2/147
摘要： A vibratory actuator includes a piezoelectric element, a driver element provided on the piezoelectric element and a movable body supported by the driver element. A control unit supplies a first voltage and a second voltage at the same frequency to the piezoelectric element. By supplying the first voltage and the second voltage having a difference phase from a phase of the first voltage by 90°, the piezoelectric element is lead to composite vibration of stretching and bending, thereby causing the driver to make an elliptical motion by the vibration and move the movable body. The control unit switches, during a fine mode, a phase difference between the first voltage and the second voltage between 90° and 0°.
摘要翻译： 振动致动器包括压电元件，设置在压电元件上的驱动元件和由驱动元件支撑的可移动体。 控制单元将相同频率的第一电压和第二电压提供给压电元件。 通过将具有与第一电压的相位差的相位的第一电压和第二电压提供90°，压电元件导致拉伸和弯曲的复合振动，从而使驾驶员通过振动进行椭圆运动，并且 移动移动体。 控制单元在精细模式期间切换第一电压和第二电压在90°和0°之间的相位差。
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公开(公告)号：US07737604B2
公开(公告)日：2010-06-15
申请号：US12469212
申请日：2009-05-20
IPC分类号： H02N2/14
CPC分类号： H02N2/008 , H01L41/0913 , H02N2/026 , H02N2/028
摘要： An ultrasonic actuator includes: an actuator body (5) including an actuator body (50); a control circuit (150) for setting a driving frequency; power supply sources (191, 192) for applying a driving voltage having the driving frequency to the actuator body; and a memory (170) for storing data related to a difference between antiresonance and resonance frequencies of the actuator body (50). The control circuit (150) determines, based on a reference frequency where a current value of a current fed to the piezoelectric element (50) is local minimum and the data stored in the memory (170), a lower limit of a control range of the driving frequency so that the lower limit is equal to or higher than a frequency where the current value of the current fed to the piezoelectric element (50) is local maximum and determines the driving frequency to be a frequency in the control range.
摘要翻译： 超声致动器包括：致动器主体（5），包括致动器主体（50）; 用于设定驱动频率的控制电路（150） 用于将具有驱动频率的驱动电压施加到致动器主体的电源（191,192）; 以及用于存储与致动器主体（50）的反共振和谐振频率之间的差异有关的数据的存储器（170）。 控制电路（150）基于馈送到压电元件（50）的电流的当前值是局部最小值的参考频率和存储在存储器（170）中的数据来确定控制范围的下限 驱动频率使得下限等于或高于馈送到压电元件（50）的电流的电流值为局部最大值的频率，并将驱动频率确定为控制范围内的频率。
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公开(公告)号：US07679265B2
公开(公告)日：2010-03-16
申请号：US12114891
申请日：2008-05-05
IPC分类号： H01L41/08
CPC分类号： H01L41/0906 , G01B7/003 , G01B7/023
摘要： A drive unit includes a guide, a stage which is movable relative to the guide, an ultrasonic actuator for moving the movable body and a control unit for controlling the ultrasonic actuator. The ultrasonic actuator includes a driver element in contact with the stage and is fixed to the guide. A surface of the stage in contact with the driver element is an undulating surface. The control unit detects the position of the stage based on a change in contact pressure on the driver element due to the undulating surface.
摘要翻译： 驱动单元包括引导件，相对于引导件可移动的平台，用于移动可移动体的超声波致动器和用于控制超声致动器的控制单元。 超声波致动器包括与台架接触并固定到引导件上的驱动元件。 与驱动元件接触的台的表面是起伏的表面。 控制单元基于起伏表面基于驱动元件上的接触压力的变化来检测台的位置。
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公开(公告)号：US07646136B2
公开(公告)日：2010-01-12
申请号：US12115063
申请日：2008-05-05
CPC分类号： H01L41/083 , H01L41/0913 , H02N2/004 , H02N2/006 , H02N2/026 , H02N2/06 , H02N2/065 , H02N2/103
摘要： A piezoelectric element is formed by stacking piezoelectric layers and internal electrode layers. The internal electrode layers are positive and negative electrode layers. The positive electrode layers are first and second positive electrode layers. The negative electrode layers are first and second negative electrode layers. Each of the first positive and negative electrode layers includes four divided electrodes and a connecting electrode for connecting a pair of the four divided electrodes formed on diagonally opposite two areas along a first diagonal direction on a principle surface of the associated one of the piezoelectric layers. Each of the second positive and negative electrode layers includes four divided electrodes and a connecting electrode for connecting a pair of the four divided electrodes formed on diagonally opposite two areas along a second diagonal direction on a principle surface of the associated one of the piezoelectric layers.
摘要翻译： 压电元件通过堆叠压电层和内部电极层形成。 内部电极层是正极层和负极层。 正极层是第一和第二正极层。 负极层是第一负极层和第二负极层。 第一正极层和负极层中的每一个包括四个分隔电极和连接电极，用于在相关联的一个压电层的主表面上沿着第一对角线方向连接形成在对角相对的两个区域上的一对四个分隔电极。 第二正极层和负极层中的每一个包括四个分隔电极和连接电极，用于在相关联的一个压电层的主表面上沿着第二对角线方向连接形成在对角相对的两个区域上的一对四个分隔电极。
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公开(公告)号：US08314533B2
公开(公告)日：2012-11-20
申请号：US12738353
申请日：2008-07-29
IPC分类号： H02N2/00
CPC分类号： H01L41/0906 , H01L41/053
摘要： A supporting structure for an actuator body, which can prevent reduction of vibration of an actuator body and maintain a contact state of a driver element with an abutment body in a stable manner even when the driver element receives reactive force from the abutment body is realized.An ultrasonic actuator (2) includes an actuator body (4) for generating vibration, driver elements (8), provided on a mounting surface (40a) of the actuator body (4), for outputting driving force, a pressing rubber (62) for pressing the actuator body (4) to a stage (11), a case (5) to which the actuator body (4) is coupled, and a plate spring (61) for elastically supporting the actuator body (4) relative to the case (5). The plate spring (61) supports the mounting surface (40a) of the actuator body (4) on which the driver elements 8 are provided.
摘要翻译： 一种用于致动器主体的支撑结构，其可以防止致动器主体的振动的减小，并且即使当驱动元件从抵接体接收到反作用力时，也能够以稳定的方式保持驱动元件与抵接体的接触状态。 超声波致动器（2）包括用于产生振动的致动器主体（4），设置在致动器主体（4）的安装表面（40a）上的用于输出驱动力的驱动元件（8），压紧橡胶（62） 用于将致动器主体（4）按压到台架（11），致动器主体（4）联接到的壳体（5）和用于相对于所述致动器主体（4）弹性地支撑致动器本体 情况（5）。 板簧（61）支撑在其上设置有驱动元件8的致动器本体（4）的安装表面（40a）。
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公开(公告)号：US07898146B2
公开(公告)日：2011-03-01
申请号：US12622948
申请日：2009-11-20
IPC分类号： H01L41/09
CPC分类号： H02N2/06 , H02N2/004 , H02N2/0075 , H02N2/026
摘要： A drive unit includes a vibration actuator for controlling the piezoelectric element. A control section controls the vibration actuator switchably between a normal operation mode in which the piezoelectric element vibrates at a predetermined frequency to let the vibration actuator output a driving force, and a heating mode in which the piezoelectric element vibrates in a direction perpendicular to a direction of the driving force at a frequency different from the frequency in the normal operation mode to heat the piezoelectric element.
摘要翻译： 驱动单元包括用于控制压电元件的振动致动器。 控制部分在压电元件以预定频率振动以使振动致动器输出驱动力的正常操作模式和压电元件在垂直于方向的方向上振动的加热模式之间切换地控制振动致动器 在与正常操作模式中的频率不同的频率下驱动力以加热压电元件。
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公开(公告)号：US07834523B2
公开(公告)日：2010-11-16
申请号：US12114839
申请日：2008-05-05
IPC分类号： H01L41/053
CPC分类号： H01L41/0913 , H01L41/053 , H02N2/004 , H02N2/026
摘要： An ultrasonic actuator includes: an actuator body using a piezoelectric element and generating a plurality of vibrations of different vibration directions; a driver element provided in the actuator body and operated in accordance with the vibration of the actuator body to output a driving force in a predetermined driving direction; a case containing the actuator body; at least one support rubber provided between the actuator body and the case to elastically support the actuator body along the driving direction with respect to the case; and at least one stopper provided between the actuator body and the case which comes into contact with at least one of the actuator body and the case when the actuator body is displaced in a direction opposite the driving direction such that the displacement of the actuator body in the direction opposite the driving direction is limited.
摘要翻译： 超声波致动器包括：使用压电元件并产生不同振动方向的多个振动的致动器主体; 驱动器元件，其设置在所述致动器主体中，并且根据所述致动器主体的振动进行操作，以在预定的驱动方向上输出驱动力; 包含致动器本体的壳体; 至少一个支撑橡胶，其设置在所述致动器主体和所述壳体之间，以相对于所述壳体沿着所述驱动方向弹性地支撑所述致动器主体; 以及设置在所述致动器主体和所述壳体之间的至少一个止动件，当所述致动器主体沿与所述驱动方向相反的方向移位时，所述致动器主体和所述壳体中的至少一个与所述致动器主体和所述壳体接触， 与驱动方向相反的方向是有限的。
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公开(公告)号：US20080278035A1
公开(公告)日：2008-11-13
申请号：US12114839
申请日：2008-05-05
IPC分类号： H02N2/02 , H01L41/053
CPC分类号： H01L41/0913 , H01L41/053 , H02N2/004 , H02N2/026
摘要： An ultrasonic actuator includes: an actuator body using a piezoelectric element and generating a plurality of vibrations of different vibration directions; a driver element provided in the actuator body and operated in accordance with the vibration of the actuator body to output a driving force in a predetermined driving direction; a case containing the actuator body; at least one support rubber provided between the actuator body and the case to elastically support the actuator body along the driving direction with respect to the case; and at least one stopper provided between the actuator body and the case which comes into contact with at least one of the actuator body and the case when the actuator body is displaced in a direction opposite the driving direction such that the displacement of the actuator body in the direction opposite the driving direction is limited.
摘要翻译： 超声波致动器包括：使用压电元件并产生不同振动方向的多个振动的致动器主体; 驱动器元件，其设置在所述致动器主体中，并且根据所述致动器主体的振动进行操作，以在预定的驱动方向上输出驱动力; 包含致动器本体的壳体; 至少一个支撑橡胶，其设置在所述致动器主体和所述壳体之间，以相对于所述壳体沿着所述驱动方向弹性地支撑所述致动器主体; 以及设置在致动器主体和壳体之间的至少一个止动件，当致动器主体在与驱动方向相反的方向上移位时，该致动器本体和壳体中的至少一个与致动器主体和壳体接触， 与驱动方向相反的方向是有限的。
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公开(公告)号：US20080272672A1
公开(公告)日：2008-11-06
申请号：US12111247
申请日：2008-04-29
IPC分类号： H02N2/06
CPC分类号： H02N2/06 , H02N2/004 , H02N2/0075 , H02N2/026
摘要： A drive unit includes a control unit for controlling an ultrasonic actuator. The control unit performs switching between a normal operation mode in which the piezoelectric element unit vibrates at a frequency close to a resonance frequency of longitudinal vibration in the lengthwise direction of the piezoelectric element unit and a resonance frequency of bending vibration to let the ultrasonic actuator output a driving force and a heating mode in which the piezoelectric element unit vibrates at a frequency close to a resonance frequency of longitudinal vibration in the thickness direction of the piezoelectric element unit to heat the piezoelectric element.
摘要翻译： 驱动单元包括用于控制超声致动器的控制单元。 控制单元在压电元件单元以接近压电元件单元的长度方向的纵向振动的共振频率的频率和弯曲振动的共振频率振动的正常操作模式之间进行切换，以使超声波致动器输出 驱动力和加热模式，其中压电元件单元以接近于压电元件单元的厚度方向的纵向振动的共振频率的频率振动以加热压电元件。
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公开(公告)号：US08493006B2
公开(公告)日：2013-07-23
申请号：US12701682
申请日：2010-02-08
摘要： A drive unit includes an ultrasonic actuator having an actuator body formed using a piezoelectric element, and a driving element provided on the actuator body and configured to output a driving force by moving according to the vibration of the actuator body, and a control section configured to induce the vibration in the actuator body by applying a first and a second AC voltages having a same frequency and different phases to the piezoelectric element. The control section adjusts the first AC voltage and the second AC voltage so that the first AC voltage and the second AC voltage have different voltage values from each other.
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