摘要
水声发射换能器种类繁多,通常按工作频率加以区分.在低频段给出了几种工程上常用的低频大功率换能器的结构形式,并讨论了提高换能器工作极限的技术途径,同时还指出速度控制对低频声基阵的重要性.在中频段主要给出了拓展换能器工作带宽的各种结构形式及一种新的设计方法,并讨论了新材料应用及宽带匹配技术.在高频段给出了陶瓷颗粒簇匹配层换能器的等效电路,同时分析了高频换能器基阵机电一体化设计的发展趋势.结果表明,新结构、新材料、新工艺仍是推动水声发射换能器不断发展的技术途径.
There are various types of underwater acoustic projectors and they are often categorized according to their operating frequency.Some configurations of low-frequency high power transducers commonly adopted in engineering were analysed.Technical solutions for exploiting these transducers＇ optimal performance were discussed.These solutions emphasized the importance of control over transducer velocity,for example,in array elements,in order to obtain optimal performance from a low-frequency acoustic array.As to medium frequency coverage,various configurations adopted in recent years to expand the working frequency band of transducers as well as new design methods were introduced.The application of new materials and broadband matching technique were then discussed.For high frequency coverage,an equivalent circuit using matching ceramic pillar matching layer transducers was outlined,and the developing trend of integrated designs of high-frequency transducer arrays was also analyzed.Results show that new structures,new materials and new methods are still possible ways to improve underwater projectors.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2010年第7期932-937,共6页
Journal of Harbin Engineering University
关键词
水声换能器
大功率
带宽
underwater transducer
high power
bandwidth
