This article design a set of acoustic levitation polishing device, which includes ultrasound generator, polishing container and workpiece installation fixture. And select the rectangular transducer array as ultrasonic transmitting terminal. 2.
本文主要的研究内容有：1.设计制作了一套声悬浮抛光装置，主要包括超声波发生器、抛光容器以及工件安装夹具，选择了矩形换能器阵作为超声波发射端。
Now, focus transducers have three kinds of types: Focus transducer, acoustic lens, phased array focusing system.
到目前为止可以实现聚焦的换能器有三种类型：聚焦换能器、声透镜、相控阵聚焦系统。
It was shown that using polystyrene as wedge material, high polymer as transducer material and curved wedge as an acoustic lens was the key point of application effectiveness for phased array system.
为保证相控阵探头在主要特性上等效于普通斜探头，用聚苯乙烯作楔块材料，用高分子聚合物作换能器材料，并用曲面声透镜改善探头在管子轴向和周向的声束特性。
The radiation directivity of a complicated conformal array of underwater acoustic transducers is presented based on the boundary element method. It includes the element directivity of each transducer, the natural beam pattern and the controlled beam pattern of the transducer array.
用边界元方法，给出了水声发射换能器共形阵各阵元的单元指向性以及基阵的自然波束指向性和束控波束指向性。
Fabrication and performance measurement of acoustical waveguide in acousto-optic tunable filter A Kind of Acoustic Logging with Phased Arc Array Transducer
声光可调谐滤波器中声波导的制作及性能测试可用于声波测井的相控圆弧阵声波辐射器
The experimental and theoretical analysis of the ultrasonic field for the spiral coil electromagnetic acoustic transducer (EMAT) and the piezoelectricity transducer array was researched in the thesis.
本论文主要研究螺旋线圈型电磁超声换能器和压电阵列超声换能器的声场分布和实验验证。
The scanning and focusing of acoustic beam in solid by a Fresnel transducer array of planar structure is significant in many applications.
用固体表面上的菲涅耳换能器阵实现固体中声束的聚焦和扫描，它具有实用意义。本文将分别运用标量和矢量理论，分析菲涅耳阵在固体中产生的声束特性。
Ultrasonic transducer array, whose function is to transfer high-frequency electric signal to ultrasound, is an important part of Acoustic Parametric Array. In the Acoustic Parametric Array, the ultrasound formed by the transducer array self-demodulates into hearable sound.
超声换能器阵是声学参量阵的重要组成部分。它的作用是将高频电信号转化为超声波，然后超声波在空气中自解调成为声波。
Sound Field Modeling and Calculation for Underwater Acoustic Projecting Transducer and Array Directivity of acoustic vector array
水声发射换能器及基阵的辐射声场建模与计算声矢量阵指向性
Application of the wave superposition method in radiation calculation and beam synthesis of an underwater acoustic transducer array Sound field calculation of underwater acoustic projecting transducer array of arbitrary shape
声波叠加法在基阵辐射场计算以及波束合成中的应用任意阵形水声换能器阵辐射声场计算
In accordance with the theory of underwater acoustic spread and circular piston transducer array, the mathematical model for the directivity of array in which the units are distributed in various manners is created.
根据水声传播和换能器基阵理论，建立了任意几何分布的基阵方向性的数学模型。
Sound Insulation and Shockproof Design for Receiving Transducer in Array Acoustic Logging Tool
阵列声波接收换能器的隔声及防震设计
Using a spherical acoustic source as the array element to synthesize a virtual plane NFCA, we measure the far-field radiation characteristics of a plane loudspeaker transducer made in the near-field, with result agree well with that measured in the far-field in a lake.
并以小球源为阵元合成一虚拟平面NFCA，用它对一平面喇叭换能器的近场测量得到远场指向性，并与远场实测结果比较，得到了相当吻合的结果。
Time reversal is a process that utilizes the reciprocity of wave transmission in static medium and can focus acoustic energy at origin of the probe signal, without the knowledge of medium and transducer array.
时间反转处理方法利用了静态介质中波传播的相互性，可以在不均匀的声学介质中实现声束的聚焦，而不需要介质和换能器阵列性质和结构的先验知识。
Sound field calculation of underwater acoustic projecting transducer array of arbitrary shape Time Domain Photoacoustic Tomography System Using Linear Transducer Array
任意阵形水声换能器阵辐射声场计算基于阵列探测方式的时域光声成像系统
A photoacoustic imaging system based on the linear acoustic transducer array is developed and the imaging speed had been improved.
完成了基于线性阵列超声探头的光声成像系统，提高了光声成像的速度。
Sound field of annular array shaped ultrasonic transducer Multipole acoustic logging transmitter structurized by annular array
平面环状阵列换能器声场的分析基于圆弧阵的多极子声波测井辐射器
The pitching and rolling motion of the buoy cause considerably great error to the acoustic positioning precision of underwater transducer array. The exciting source of the two kinds of motions is wave.
定位浮标的升沉和横摇运动对海水中换能器阵的水声定位精度影响较大，而使定位浮标产生这两种振荡的主要激励源是波浪。
Simple Fraunhofer approximation was unsuitable for analysing acoustic field of transducer arrays in tissue because linear array B - scanners image in near and middle field.
线阵B超的成象区域都是在近中场，用简单的Fraunhofer近似研究组织中的声场分布是不恰当的。