中文摘要：

利用压电振子采集环境振动能量为低功耗电子产品供能是近年来研究的热点，而压电振子的振动发电能力与其几何形状有关。该文针对悬臂梁压电振子，利用ANSYS软件仿真分析了其自由端尺寸的改变对压电振子的输出电压及固有频率的影响。结果表明，在相同条件下，存在一定的自由端尺寸使压电振子采集环境中低频振动的能量最大。

英文摘要：

Converting vibration energy from environment energy into electrical energy for low power electronic products by using piezoelectric vibrators was one of the research hot spot in recent years. The geometric shape had a great impact on the generating capaeity of piezoelectric vibrators. In this paper, the analysis models were established to simulate the influence of the change of the free end size for the output voltage and frequency of piezoelectric canti- lever beam by using ANSYS software. The research results showed that there was some sort of the free end size, which made the energy from environment energy of low frequency vibration maximum.