【摘要】 文章叙述了《球面聚焦超声换能器的电声特性和声功率测量》的自易法校准成为国家标准方法后,进而以其为基础在起草国际电工委员会技术规范的过程中,所做的主要技术进步,包括:理论叙述的改进、一些错误概念的修正、最新研究成果的吸纳、全频段实验验证、测量不确定度估计等重要方面。更多还原

【Abstract】 This paper describes the major technical improvements in drafting IEC TS 62903 Ed1.0: 2018 based on GB/T 32522-2016 Acoustics-Electroacoustical characteristics and measurements of spherically focused piezoelectric ultrasonic transducers, in which the self-reciprocity calibration method is defined as the national standard method in China.These improvements include the theoretical expression, the corrections of some error concepts, applications of new research results, the experimental verification in full frequency range, and the evaluation of measurement uncertainty etc.更多还原