摘要
针对目前功率超声中电源到压电换能器的匹配问题,基于分析串联,并联匹配的优缺点,设计了一套综合的匹配网络,使电源输出电压与电流波形保持同相位,且换能器两端波形质量良好。将相位差和品质因数Q作为衡量匹配良好的两个重要指标。
For the current problem about the electrical matching in large power piezoelectric transducer,a comprehensive matching networking based on the advantages of series and parallel method is designed. In this case,output voltage and current could be superposition effectively,and the current quality is perfect as well. Phase difference and quality factor are considered as two important factors to measure the quality of electrical matching.
出处
《电声技术》
2014年第7期32-34,82,共4页
Audio Engineering
基金
国家自然科学基金会(NSFC)-广东联合基金重点资助项目(U1134004)
关键词
功率超声
阻抗匹配
相位差
品质因数
ultrasonic power
electrical matching
phase difference
quality factor
