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zuo dian chi ji pian chao sheng bo jin shu han jie ji de she ji
Author(s): 
Pages: 40-42,55
Year: Issue:  1
Journal: Welding Technology

Keyword:  超声波金属焊接机锂电池频率跟踪移相PWM;
Abstract: 根据锂电池电极焊接工艺要求,提出了一种基于压电陶瓷纵向振动的机械结构形式,设计了一种全数字化控制的超声波金属焊接机电源系统.该电源系统采用移相PWM数字振幅控制、振幅阶梯输出、可编程的缓启动,自动焊头频率搜索及自动频率跟踪等技术.实际使用证明,该机能快速实现自动频率跟踪、精确振幅控制、完善故障保护.
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