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最近美国NTR系统公司(NTR System Inc.,1902 North 34th Street,Seattle,WA 98103,USA)推出了一个压电换能器数字模型软件包,PiezoCAD。这个软件包用传输矩阵法计算换能器的整体特性。用户可以从软件包里的数据库选择压电材料的参数。这个数据库里有陶瓷、晶体、聚合物和复合材料的板、条、棒的大量参数。用户可以规定多层匹配层、多层背衬层和负载的特性。在电端可以规定各种电匹配网络,包括电阻、电容、电感、变压器和同轴电缆的串联、并联及各种组合。用T型网络表示的非理想变压器也包括在
Recently, NTR Systems Inc. (1902 North 34th Street, Seattle, WA 98103, USA) introduced PiezoCAD, a digital transducer software package for piezoelectric transducers. This package uses the transfer matrix method to calculate the overall characteristics of the transducer. The user can select the parameters of the piezoelectric material from the database in the package. This database contains a large number of parameters for plates, bars and rods of ceramics, crystals, polymers and composites. Users can specify multi-layer matching layer, multi-layer backing layer and load characteristics. In the electrical terminal can provide a variety of electrical matching network, including resistors, capacitors, inductors, transformers and coaxial cables in series, parallel and various combinations. Non-ideal transformers represented by T-networks are also included