能量收集技术是一种面向无线低功耗应用的供能技术，基于压电效应的悬臂梁振动能量收集是其中的一项重要方法。然而，悬臂梁式收集器仅在有限狭窄的频率带宽内有效，在实际应用中受到限制。本文对近些年研究人员提出的优化方法进行了总结，从线性与非线性拓宽频带法、频率调谐法的角度进行分类讨论，这些方法对于突破悬臂梁收集器窄频带的瓶颈具有积极的意义。随后，本文从不同的研究思路角度介绍了一些近年的研究热点与关键技术问题，例如低频、多方向能量收集等，并对目前的应用研究进行总结。最后，对悬臂梁式压电振动能量收集器的研究不足与未来的发展趋势做出了思考。

Energy harvesting technology is a power-sourcing technology for wireless low-power applications. The piezoelectric cantilever vibration energy harvester is one of the important methods. However, the cantilever harvester is only effective in a limited narrow frequency bandwidth and is limited in practical applications. This paper summarizes the optimization methods proposed by researchers in recent years, and classifies them from the perspective of linear and nonlinear wideband method and frequency tuning method. These methods have positive significance for breaking the bottleneck of the narrow band of cantilever harvester. Subsequently, this paper introduces some recent research hotspots and key technical issues from different research ideas, such as low-frequency, multi-directional energy harvesting, etc., and summarizes the current applied research. Finally, the research on the insufficiency of the cantilever piezoelectric vibration energy harvester and the future development trend are considered.