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| 基于FPGA全域自识别追频超声焊接电源 |
| FPGA-based global self-identification frequency tracking ultrasonic welding power supply |
| 投稿时间：2025-05-23 修订日期：2025-06-26 |
| 中文摘要: |
| 针对超声金属焊接电源在使用过程中出现的步进追频误追踪问题，设计了一种基于FPGA（Field Programmable Gate Array）实现全域自识别追频的超声焊接电源。结合等效电路及导纳圆原理分析了传统相位法步进追频方案在复杂工况下（追踪目标或失锁区域变化）发生的频率误追踪现象及原因。同时，以数字鉴相器为实现基础，设计了全域自识别追频方案。实验结果表明，基于FPGA设计的全域自识别追频逻辑能够在复杂工况下正确判断追频方向，并能够实现谐振频率的实时追踪。 |
| 英文摘要: |
| A design is proposed for an ultrasonic welding power source based on FPGA (Field Programmable Gate Array) to address the issues of erroneous step tracking frequency in the operation of ultrasonic metal welding power sources. The frequency mis-tracking phenomena and their causes in traditional phase method step tracking frequency schemes under complex conditions (including variations in tracking targets or loss of lock zones) are analyzed using equivalent circuit and admittance circle principles. Furthermore, a globally self-identifying tracking frequency scheme is designed based on a digital phase detector. Experimental results indicate that the globally self-identifying tracking frequency logic, designed on FPGA, is capable of correctly determining the tracking direction under complex conditions and achieving real-time tracking of the resonant frequency. |
| DOI： |
| 中文关键词: 全域自识别 频率追踪 超声电源 |
| 英文关键词: Global Self-identification Frequency Tracking Ultrasonic Power supply |
| 基金项目: |
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