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1.发明授权
公开(公告)号：US5313266A
公开(公告)日：1994-05-17
申请号：US931228
申请日：1992-08-17
CPC分类号： G01H9/004 , G01D5/35329
摘要： A highly sensitive optical fiber interferometer sensor comprising a laser light source, a [2.times.2] optical fiber coupler to split the beam in two, a differential transducer which converts a signal of interest into optical phase shift in the laser light transmitted through the two optical fibers in the interferometer and a [3.times.3] optical fiber complex which recombines the two beams, producing interference which can be electronically detected. The use of the [3.times.3] coupler permits Passive Homodyne demodulation of the phase-modulated signals provided by the interferometer without feedback control or modulation of the laser itself and without requiring the use of electronics within the interferometer.
摘要翻译： 一种高灵敏度的光纤干涉仪传感器，包括激光光源，将光束分成两部分的[2x2]光纤耦合器，将感兴趣的信号转换成透过两根光纤的激光的光学相移的差分换能器 在干涉仪和复合两个光束的[3x3]光纤复合体中，产生可被电子检测的干扰。 使用[3x3]耦合器允许由干涉仪提供的相位调制信号的被动量子解调，而不需要激光器本身的反馈控制或调制，而不需要使用干涉仪内的电子元件。
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公开(公告)号：US06307287B1
公开(公告)日：2001-10-23
申请号：US09521368
申请日：2000-03-08
IPC分类号： F03G700
CPC分类号： F03G7/002 , F02G1/0435 , F02G2243/54 , F25B9/145 , F25B2309/1404 , G10K9/13 , G10K9/18 , H02K33/02
摘要： A thermoacoustic driver incorporates a linear electrodynamic motor having electrical terminals and a moving part, a driver suspension housing, a piston, and a stiffness-enhancing device for raising the mechanical resonance frequency of the electrodynamic motor without reducing the piston stroke. The stiffness enhancement is accomplished by the use of specially optimized suspension spring structures and/or by attaching one or more electrical inductors to the electrical terminals of the driver. The stiffness enhancement using mechanical springs incorporates one or more starfish structures extending between the driver suspension housing and the piston and rigidly clamped to both. The starfish structures comprise radially extending legs, which are leaf springs or beams of varying width. The shape of the beams and the shape of the overall spring structure are optimized to enhance flexural or torsional stiffness and relieve arc tension within the constraints of cost-effectiveness. In one version, two modified triangular (trapezoidal) cantilever beams are connected through a straight middle section and form a bow-tie shaped beam.
摘要翻译： 热声驱动器包括具有电端子和运动部件的线性电动马达，驱动器悬架壳体，活塞和用于提高电动马达的机械共振频率而不减小活塞冲程的刚度增强装置。 通过使用特别优化的悬架弹簧结构和/或通过将一个或多个电感器附接到驱动器的电端子来实现刚度增强。 使用机械弹簧的刚度增强结合了一个或多个在驱动器悬挂壳体和活塞之间延伸并且刚性地夹紧到两者的海星结构。 海星结构包括径向延伸的腿，其是板簧或不同宽度的梁。 优化梁的形状和整体弹簧结构的形状，以增强弯曲或扭转刚度，并在成本效益的限制内缓解电弧张力。 在一个版本中，两个改进的三角形（梯形）悬臂梁通过直的中间部分连接并形成弓形梁。
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公开(公告)号：US07081699B2
公开(公告)日：2006-07-25
申请号：US10810907
申请日：2004-03-26
申请人： Robert M. Keolian , Kevin J. Bastyr
发明人： Robert M. Keolian , Kevin J. Bastyr
CPC分类号： H01L41/113 , H02N2/18
摘要： A thermoacoustic generator includes a housing with a thermoacoustic core supported in the housing. The core is operable to introduce acoustical power into the housing to thereby oscillate the pressure of the gas in the housing at a frequency. A piezoelectric alternator is also supported in the housing and has a face that is movable when acted on by the acoustical power. The alternator includes a portion of piezoelectric material operable to produce electrical power when acted upon by a stress. The piezoelectric material is in mechanical communication with the movable face so that movement of the face stresses the piezoelectric material. The alternator has a moving mass that serves as a substantial portion of the resonating mass inside the housing, thereby providing a pressure oscillation frequency in the housing substantially lower than for a similar system with a rigid member replacing the alternator.
摘要翻译： 热声发生器包括具有支撑在壳体中的热声芯体的壳体。 芯可操作地将声功率引入壳体中，从而以一定的频率振荡壳体中的气体的压力。 压电交流发电机也被支撑在壳体中，并具有当由声功率作用时可移动的面。 交流发电机包括压电材料的一部分，其可操作以在受到应力作用时产生电功率。 压电材料与可动面机械连通，使得面的运动迫使压电材料。 交流发电机具有作为壳体内的谐振质量的实质部分的运动质量，从而在壳体中提供基本上低于具有替代交流发电机的刚性构件的类似系统的压力振荡频率。
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公开(公告)号：US5456082A
公开(公告)日：1995-10-10
申请号：US261361
申请日：1994-06-16
CPC分类号： F02G1/0435 , F24J3/00 , F25B9/145 , F02G2243/52 , F02G2243/54 , F25B2309/003 , F25B2309/1416
摘要： A thermoacoustic stack for connecting two heat exchangers in a thermoacoustic energy converter provides a convex fluid-solid interface in a plane perpendicular to an axis for acoustic oscillation of fluid between the two heat exchangers. The convex surfaces increase the ratio of the fluid volume in the effective thermoacoustic volume that is displaced from the convex surface to the fluid volume that is adjacent the surface within which viscous energy losses occur. Increasing the volume ratio results in an increase in the ratio of transferred thermal energy to viscous energy losses, with a concomitant increase in operating efficiency of the thermoacoustic converter. The convex surfaces may be easily provided by a pin array having elements arranged parallel to the direction of acoustic oscillations and with effective radial dimensions much smaller than the thicknesses of the viscous energy loss and thermoacoustic energy transfer volumes.
摘要翻译： 用于连接热声能量转换器中的两个热交换器的热声叠层在垂直于轴线的平面中提供凸起的流体 - 固体界面，用于两个热交换器之间的流体的声振荡。 凸表面增加了从凸表面移位到与粘性能量损失发生的表面相邻的流体体积的有效热声体积中的流体体积的比例。 增加体积比导致传递的热能与粘性能量损失的比率的增加，伴随着热声转换器的操作效率的增加。 凸表面可以容易地由具有平行于声振动方向布置的元件的销阵列提供，并且有效径向尺寸远小于粘性能量损失和热声能传递体积的厚度。
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公开(公告)号：US07772746B2
公开(公告)日：2010-08-10
申请号：US11492311
申请日：2006-07-25
IPC分类号： H02N2/00
CPC分类号： H01L41/113 , H02N2/18
摘要： An electroactive transducer converts between acoustical power and electrical power. The transducer includes a diaphragm and a perimeter member. The perimeter member includes at least one electroactive element and is mechanically coupled to the perimeter of the diaphragm such that displacement of the diaphragm stresses the electroactive element.
摘要翻译： 电动换能器在声功率和电功率之间进行转换。 换能器包括隔膜和周边构件。 周边构件包括至少一个电活性元件并且机械地联接到隔膜的周边，使得隔膜的位移强调电活性元件。
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