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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >A concentric-ring equivalent phased array method to model fields oflarge axisymmetric ultrasound transducers
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A concentric-ring equivalent phased array method to model fields oflarge axisymmetric ultrasound transducers

机译：同心圆等效相控阵方法对大型轴对称超声换能器的场建模

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摘要

An equivalent concentric-ring ultrasound phased array method wasndeveloped to estimate ultrasonic continuous wave fields generated bynaxisymmetric single-source transducers. The method models a given sourcenas a concentric-ring phased array by mathematically segmenting it intonmany rings and subsequently finding the amplitude and phase for eachnring that produces an acoustic field similar to the field of thensingle-source transducer. The excitation source of each ring wasncalculated using an inverse technique based on complex pressurenmeasurements along a radial line close to the source. The predictingnabilities of the method are evaluated by comparing measured andnestimated ultrasound fields for six different transducers. The resultsnshow that the concentric-ring equivalent phased array method (CREPAM) isnable to estimate quantitatively the ultrasound fields generated by largenaxisymmetric planar and focused transducers
机译：研制了等效的同心环超声相控阵方法来估计由轴对称单源换能器产生的超声连续波场。该方法通过将给定源与同心环相控阵进行数学建模，方法是将同心环相控阵分割成任意环，然后找到每个环的振幅和相位，从而产生类似于单源换能器场的声场。使用逆技术基于沿着靠近源的径向线的复杂压力测量来计算每个环的激发源。该方法的可预测性通过比较六个不同换能器的实测和优化超声场进行评估。结果表明，同心环等效相控阵方法（CREPAM）不能定量估计大型对称平面和聚焦换能器产生的超声场

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