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    • 2. 发明申请
    • ACTUATORS WITH DIAPHRAGM AND METHODS OF OPERATING SAME
    • 具有透镜的致动器及其操作方法
    • WO2006124162A2
    • 2006-11-23
    • PCT/US2006013857
    • 2006-04-13
    • PAR TECHNOLOGIES LLCWRIGHT DAVID DVOGELEY JAMESTANNER EDWARD T
    • WRIGHT DAVID DVOGELEY JAMESTANNER EDWARD T
    • B41J2/045
    • F04B17/003F04B9/105F04B43/046F15B7/00F15B15/18H01L41/0973H02N2/02
    • Actuator assemblies comprise an actuator element and two piezoelectric assemblies, with the two piezoelectric assemblies being configured and arranged for controlling movement of the actuator element. In some example implementations, the first piezoelectric assembly and the second piezoelectric assembly are constructed and arranged so that a temperature dependency of the first piezoelectric assembly is cancelled by the temperature dependency of the second piezoelectric assembly. In a first example embodiment, a first piezoelectric assembly comprises a first or main piezoelectric diaphragm connected to the actuator element for displacing the actuator element in response to displacement of the first piezoelectric diaphragm. The first piezoelectric diaphragm is mounted to a movable carriage. A second piezoelectric diaphragm, which comprises the second piezoelectric assembly, is connected to the carriage for displacing the carriage in response to displacement of the second piezoelectric diaphragm. A driver applies electrical signals to the first piezoelectric diaphragm and the second piezoelectric diaphragm for causing the first piezoelectric diaphragm and the second piezoelectric diaphragm to displace in the same direction. In a second example embodiment, the actuator element is at least partially situated in a housing wherein the actuator element is capable of reciprocating movement. Within the housing the actuator element at least partially defines a first variable fluidic chamber and a second variable fluidic chamber. The first piezoelectric assembly comprises a first variable reservoir connected to the first variable fluidic chamber; the second piezoelectric assembly comprises a second variable reservoir connected to the second variable fluidic chamber. A first working fluid occupies the first variable reservoir and the first variable fluidic chamber; a second working fluid occupies the second variable reservoir and the second variable fluidic chamber. A driver applies signals to the piezoelectric material comprising the first variable reservoir and the second variable reservoir for causing the first variable reservoir to contract and the second variable reservoir to expand during an extension movement of the actuator element, and for causing the first variable reservoir to expand and the second variable reservoir to contract during a withdrawal movement of the actuator element.
    • 致动器组件包括致动器元件和两个压电组件,其中两个压电组件被构造和布置成用于控制致动器元件的移动。 在一些示例性实施方案中,第一压电组件和第二压电组件被构造和布置成使得第一压电组件的温度依赖性被第二压电组件的温度依赖性抵消。 在第一示例性实施例中,第一压电组件包括连接到致动器元件的第一或主压电膜片,用于响应于第一压电隔膜的位移而使致动器元件移位。 第一压电隔膜安装到可动托架上。 包括第二压电组件的第二压电隔膜连接到滑架,用于响应于第二压电振动板的位移而移动滑架。 驱动器将电信号施加到第一压电隔膜和第二压电隔膜,用于使第一压电隔膜和第二压电隔膜在相同方向上移位。 在第二示例性实施例中,致动器元件至少部分地位于壳体中,其中致动器元件能够往复运动。 在壳体内,致动器元件至少部分地限定第一可变流体腔室和第二可变流体腔室。 第一压电组件包括连接到第一可变流体室的第一可变容器; 第二压电组件包括连接到第二可变流体室的第二可变容器。 第一工作流体占据第一可变储存器和第一可变流体腔室; 第二工作流体占据第二可变储存器和第二可变流体腔室。 驱动器将信号施加到包括第一可变储存器和第二可变储存器的压电材料,以使第一可变储存器收缩,并且第二可变储存器在致动器元件的延伸运动期间膨胀,并且用于使第一可变储存器 膨胀和第二可变储存器在致动器元件的抽出运动期间收缩。
    • 3. 发明申请
    • CIRCUITS FOR HARVESTING ENERGY FROM PIEZOELECTRIC DEVICES
    • 从压电设备中获取能量的电路
    • WO2009114644A3
    • 2009-12-17
    • PCT/US2009036859
    • 2009-03-11
    • ADAPTIVENERGY LLCWRIGHT DAVID D
    • WRIGHT DAVID D
    • H02N2/06H02J7/00H02M3/155
    • H02J7/32H02N2/181
    • Circuits (20, 220, 320, 420) are provided for applying electrical charge collected from a piezoelectric device (22) to a charge storage device (24, 224, 424). The circuits comprise a peak detector (32, 232) and a switch(es) (34, 134, 234, 434) which is/are operated to initiate transfer of the electrical charge from the piezoelectric device to the charge storage device upon detection by the peak detector (32, 232) of a peak voltage across the piezoelectric device (22). In an example embodiment, the peak detector (32, 232) comprises a peak-detection capacitance (C4); a gain element (42, 242); and a non-linear PN junction circuit (40). The circuits can also comprise charge multiplier circuit (300) configured to continue application of the electrical charge to the charge storage device (224) after the switch (262) has been turned off and/or after a point in time when magnitude of the voltage across the charge storage device (224) equals the magnitude of the voltage across the piezoelectric device (22).
    • 提供电路(20,220,320,420),用于将从压电装置(22)收集的电荷施加到电荷存储装置(24,224,424)。 所述电路包括峰值检测器(32,232)和开关(34,134,234,434),所述开关被操作以在检测到之后开始将电荷从压电装置传送到电荷存储装置 压电器件(22)上的峰值电压的峰值检测器(32,232)。 在示例实施例中,峰值检测器(32,232)包括峰值检测电容(C4); 增益元件(42,242); 和非线性PN结电路(40)。 所述电路还可以包括电荷倍增器电路(300),所述电荷倍增器电路被配置成在所述开关(262)已被关闭之后和/或在所述电压的幅度的时间点之后继续向所述电荷存储装置(224)施加电荷 越过电荷存储器件(224)等于压电器件(22)两端的电压的大小。
    • 5. 发明申请
    • CIRCUITS FOR HARVESTING ENERGY FROM PIEZOELECTRIC DEVICES
    • 用于从压电器件捕获能量的电路
    • WO2009114644A2
    • 2009-09-17
    • PCT/US2009/036859
    • 2009-03-11
    • ADAPTIVENERGY LLC.WRIGHT, David, D.
    • WRIGHT, David, D.
    • H02N2/06H02J7/00H02M3/155
    • H02J7/32H02N2/181
    • Circuits (20, 220, 320, 420) are provided for applying electrical charge collected from a piezoelectric device (22) to a charge storage device (24, 224, 424). The circuits comprise a peak detector (32, 232) and a switch(es) (34, 134, 234, 434) which is/are operated to initiate transfer of the electrical charge from the piezoelectric device to the charge storage device upon detection by the peak detector (32, 232) of a peak voltage across the piezoelectric device (22). In an example embodiment, the peak detector (32, 232) comprises a peak-detection capacitance (C4); a gain element (42, 242); and a non-linear PN junction circuit (40). The circuits can also comprise charge multiplier circuit (300) configured to continue application of the electrical charge to the charge storage device (224) after the switch (262) has been turned off and/or after a point in time when magnitude of the voltage across the charge storage device (224) equals the magnitude of the voltage across the piezoelectric device (22).
    • 提供电路(20,220,320,420),用于将从压电装置(22)收集的电荷施加到电荷存储装置(24,224,424)。 这些电路包括峰值检测器(32,232)和开关(34,134,234,434),所述开关(34,134,234,434)被操作以启动电荷从压电装置转移到电荷存储装置 所述峰值检测器(32,232)跨越所述压电器件(22)的峰值电压。 在示例性实施例中,峰值检测器(32,232)包括峰值检测电容(C4); 增益元件(42,242); 和非线性PN结电路(40)。 电路还可以包括充电乘法器电路(300),其被配置为在开关(262)已经断开之后和/或在电压的大小的时间点之后继续将电荷施加到电荷存储装置(224) 跨越电荷存储装置(224)的电压等于压电装置(22)两端的电压的大小。
    • 7. 发明申请
    • COMPRESSOR AND COMPRESSION USING MOTION AMPLIFICATION
    • 使用运动放大的压缩机和压缩
    • WO2007136593A3
    • 2008-07-03
    • PCT/US2007011492
    • 2007-05-14
    • ADAPTIVENERGY LLCWRIGHT DAVID D
    • WRIGHT DAVID D
    • F04B17/00
    • F04B43/04F04B43/046F04B45/047H01L41/0973H04R17/00
    • A compressor system (20,20', 20") comprises a motion amplifier (22) which acts through a compressor head or piston (46) to compress fluid in a variable compression chamber (52) The motion amplifier (22) comprises a piezoelectric diaphragm (30) and drive electronics (26) for applying a drive signal to the piezoelectric diaphragm The drive signal is generated to maintain the motion amplifier resonant at a predetermined frequency The motion amplifier preferably comprises (in addition to the piezoelectric diaphragm) a reaction mass (34) connected to the piezoelectric diaphragm, a reacted mass (40) connected to the piezoelectric diaphragm, and, a reacted mass spring (50,270) for resiliently carrying the reacted mass The structure of the motion amplifier carried by the reacted mass spring (e g, the piezoelectric diaphragm, the reaction mass, and the reacted mass) has a resonant frequency f2
    • 压缩机系统(20,20',20“)包括运动放大器(22),运动放大器(22)通过压缩机头或活塞(46)作用,以压缩可变压缩室(52)中的流体。运动放大器(22) 膜片(30)和用于向压电膜施加驱动信号的驱动电子器件(26)产生驱动信号以维持运动放大器谐振在预定频率。运动放大器优选地包括(除了压电振膜)反应物质 (34),连接到压电振膜的反应物质(40),以及用于弹性地携带被反应的质量的反应的质量弹簧(50,270)。由反应的质量弹簧承载的运动放大器的结构(例如, ,压电振动膜,反应物质和反应物质)具有共振频率f2
    • 8. 发明申请
    • COMPRESSOR AND COMPRESSION USING MOTION AMPLIFICATION
    • 使用运动放大的压缩机和压缩
    • WO2007136593A2
    • 2007-11-29
    • PCT/US2007/011492
    • 2007-05-14
    • ADAPTIVENERGY LLCWRIGHT, David, D.
    • WRIGHT, David, D.
    • H01L41/00
    • F04B43/04F04B43/046F04B45/047H01L41/0973H04R17/00
    • A compressor system (20, 20', 20") comprises a motion amplifier (22) which acts through a compressor head or piston (46) to compress fluid in a variable compression chamber (52). The motion amplifier (22) comprises a piezoelectric diaphragm (30) and drive electronics (26) for applying a drive signal to the piezoelectric diaphragm. The drive signal is generated to maintain the motion amplifier resonant at a predetermined frequency. The motion amplifier preferably comprises (in addition to the piezoelectric diaphragm) a reaction mass (34) connected to the piezoelectric diaphragm; a reacted mass (40) connected to the piezoelectric diaphragm; and, a reacted mass spring (50, 270) for resiliently carrying the reacted mass. The structure of the motion amplifier carried by the reacted mass spring (e.g., the piezoelectric diaphragm, the reaction mass, and the reacted mass) has a resonant frequency f2. The resonant frequency f2 is related to a spring constant K2 of the reacted mass spring and a sum of masses of the reaction mass and the reacted mass. Preferably the predetermined frequency is f2, which means that the drive signal is generated to maintain the motion amplifier resonant at a frequency f2, e.g., the drive signal is generated to urge the motion amplifier to the frequency f2 as its operational frequency. Driving the motion amplifier (22) at the frequency f2 achieves peak amplitude displacement of the motion amplifier, and thus peak displacement of the compressor head acting1 in the compression chamber.
    • 压缩机系统(20,20',20“)包括运动放大器(22),其通过压缩机头部或活塞(46)作用以压缩可变压缩室(52)中的流体,运动放大器(22)包括 压电振动板(30)和用于向压电振动板施加驱动信号的驱动电子器件(26),产生驱动信号以使运动放大器谐振到预定频率,运动放大器优选地包括(除了压电振动膜) 连接到所述压电振动板的反作用质量块(34);连接到所述压电振动板的反应物质(40);以及用于弹性地携带所述反应物质的反应质量弹簧(50,270),所述运动放大器的结构由 反应的质量弹簧(例如,压电隔膜,反应物质和反应物质)具有共振频率f2,共振频率f2与反应的质量弹簧的弹簧常数K2和 反应物质的质量和反应物质的总和。 优选地,预定频率为f2,这意味着产生驱动信号以维持运动放大器谐振在频率f2,例如,产生驱动信号以将运动放大器推到频率f2作为其操作频率。 以频率f2驱动运动放大器(22)实现运动放大器的峰值振幅位移,从而在压缩室中作用1的压缩机头的峰值位移。