【摘要】 分析了薄球壳压电换能器的暂态响应，建立了其等效电路，并且求出了电驱动信号与换能器的瞬时运动之间的传输函数。利用留数定理，可以对任何电驱动信号，解析地求出换能器的运动在时域与频域的暂态函数。因为薄球壳换能器向四周均匀地辐射声波，故可等效为一个无方向的点源，所以其时域与频域内的暂态函数是声波测井研究中采用的源函数的较好表示，并为建立新的声波测井机电声网络与系统分析理论奠定了基础。更多还原

【Abstract】 This paper analyses the transient response of thin shell transducer, develops its equivalent circuit and determines the relation between an electric driving signal and a radiated acoustic signal. By using the residue principle, the transient functions of the temporal and frequency domains for the transducer are determined analytically for any electrical driving signal. Since the thin shell transducer radiates acoustic waves evenly in all directions, it can be equivalent to an omnidirectional point source. The results obtained in this paper set up a basis for a new electrical mechanical network theory of acoustic logging.更多还原