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公开(公告)号：US5126979A
公开(公告)日：1992-06-30
申请号：US772508
申请日：1991-10-07
IPC分类号： G10K9/12
CPC分类号： G10K9/121
摘要： An underwater acoustic projector including a Class IV flextension shell, preferably in the form of an ellipsoid, is connected to and driven by two substantially identical electromagnets having mutually opposing pole faces and having a common spatially uniform air gap which is centered between the pole faces. The coils of the two electromagnets are connected in series and when excited by a controlled current, generate a mutually attractive variable reluctance force which causes the pole faces to be attracted toward one another. The shell secured to the electromagnets elastically flexes along one of two mutually perpendicular axes resulting in a volumetric displacement of the outer surface of the shell.
摘要翻译： 包括优选为椭圆体形式的IV类弯曲外壳的水下声学投影仪连接到具有相互相对的极面的两个基本上相同的电磁体并具有位于极面之间的共同的空间上均匀的气隙的驱动。 两个电磁体的线圈串联连接，当被受控电流激励时，产生相互吸引的可变磁阻力，这导致极面相互吸引。 固定到电磁体的壳体沿两个相互垂直的轴线中的一个弹性地弯曲，导致壳体的外表面的体积位移。
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公开(公告)号：US5596550A
公开(公告)日：1997-01-21
申请号：US492649
申请日：1995-06-20
CPC分类号： G10K11/348 , G01S7/52003
摘要： A shallow water sonar apparatus and a method of processing outputs from a shallow water sonar array, where the array consists of at most two elements for receiving the acoustic energy from a plurality of directions. The apparatus also includes a beamformer for processing the acoustic energy received by the two elements to produce a tapered beam pattern which approximates a beamformer output from an array including substantially more than two elements. The tapered beam pattern is produced by asymmetrically amplitude shading outputs of the two elements, such that the output of one of the two elements is summed, without shading, with an output of the second element, shaded by a coefficient factor of 0.23.
摘要翻译： 浅水声纳装置以及从浅水声纳阵列处理输出的方法，其中该阵列由至多两个用于从多个方向接收声能的元件组成。 该装置还包括用于处理由两个元件接收的声能的波束形成器，以产生锥形波束图案，其近似来自包括基本上多于两个元件的阵列的波束形成器输出。 锥形束图案由两个元件的不对称幅度阴影输出产生，使得两个元件中的一个的输出相加，第二元素的输出被遮蔽，系数因子为0.23。
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公开(公告)号：US4413331A
公开(公告)日：1983-11-01
申请号：US680254
申请日：1976-04-26
CPC分类号： B06B1/0633
摘要： A transducer made up of a plurality of piezoceramic tubes arranged in end to end relationship with elastomeric material between tubes. The tubes are poled and driven axially; however, the hoop mode of operation is utilized to obtain a fan-shaped beam extremely narrow in one direction and extremely broad in the direction perpendicular thereto. A suitable backing arrangement is provided for the transducer when mounted on a support body to prevent degradation of the beam pattern.
摘要翻译： 由多个压电陶瓷管构成的换能器，其与管之间的弹性体材料端对端地设置关系。 管被极化并轴向驱动; 然而，使用环形操作模式来获得在一个方向上非常窄的扇形束，并且在与其垂直的方向上非常宽。 当传感器安装在支撑体上时，为传感器提供合适的背衬布置，以防止光束图案的退化。
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公开(公告)号：US4833659A
公开(公告)日：1989-05-23
申请号：US686804
申请日：1984-12-27
申请人： Frederick G. Geil , Henry M. Gruen , Howard S. Newman , Thomas J. Ratz , Linwood M. Rowe, Jr. , John H. Thompson
发明人： Frederick G. Geil , Henry M. Gruen , Howard S. Newman , Thomas J. Ratz , Linwood M. Rowe, Jr. , John H. Thompson
IPC分类号： B06B1/06 , H01L41/113
CPC分类号： B06B1/0688 , B06B1/0603 , Y10S310/80
摘要： A hydrophone array wherein each individual hydrophone of the array is comprised of, e.g. polyvinylidine fluoride (PVF.sub.2), tiles bonded to a substrate member opposite one another on opposite surfaces of the substrate. The substrate is a relatively stiff, metallic member having a Young's modulus of at least an order of magnitude greater than the PVF.sub.2 tiles which are oriented such that their stretch directions on either side of the substrate are parallel to one another. The directions of polarization of the tiles are either the same or opposite and electrical connections are made such that for a predetermined relative orientation of the directions of polarization, any output signal which may be caused by flexing or acceleration of the substrate is substantially reduced or eliminated.
摘要翻译： 一种水听器阵列，其中阵列的每个单独的水听器包括，例如， 聚偏二氟乙烯（PVF2），在衬底的相对表面上彼此相对的衬底上粘合的瓷砖。 衬底是相对刚性的金属构件，其杨氏模量比PVF2瓦片至少大一个数量级，其取向为使得它们在基板的任一侧上的拉伸方向彼此平行。 瓦片的极化方向是相同的或相反的，并且进行电连接使得对于偏振方向的预定的相对定向，可能由基板的弯曲或加速引起的任何输出信号被显着地减少或消除 。
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