This article provides a new approach to extract piezoelectric energy harvester properties, namely, capacitance and current, from the increase of voltage with time on a storage capacitor after full wave rectification. The work provides a derivation of a more complete expression for the development of the output voltage with time, from which the equilibrium expression used in earlier publications appears as a limiting case. This new formulation enables an accurate estimate of the sinusoidal driving current and the shunt capacitance to be made without recourse to direct measurement. Using the analysis with both simulated and experimental data, a four‐step procedure is proposed that requires only the measurement of the initial slope of the voltage–time profile and the final settling value. This approach allows the much studied method of converting the piezoelectric output into charge stored on a capacitor to provide a unique indirect measurement method of the driving current and device capacitance while the piezoelectric energy harvester operates at a variety of conditions, such as frequency, temperature, stress, and strain.

中文翻译：

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电流驱动全波AC / DC转换器的瞬态分析，用于在能量收集期间间接表征压电器件

本文提供了一种从全波整流后存储电容器上的电压随时间的增加中提取压电能量收集器特性（即电容和电流）的新方法。这项工作为输出电压随时间的发展提供了一个更完整的表达式，从中可以看出，早期出版物中使用的平衡表达式是一个极限情况。这种新的公式可以精确估算正弦驱动电流和并联电容，而无需直接测量。利用模拟和实验数据的分析，提出了一个四步程序，该程序仅需要测量电压-时间曲线的初始斜率和最终的稳定值。