| 基于DDS技术的超声电源系统的设计 |
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| 引用本文： | 李夏林,朱武. 基于DDS技术的超声电源系统的设计[J]. 上海电力学院学报, 2017, 33(1): 81-85 |
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| 作者姓名： | 李夏林 朱武 |
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| 作者单位： | 上海电力学院 电子与信息工程学院,上海电力学院 电子与信息工程学院 |
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| 摘 要： | 针对超声电源系统出现的频率跟踪慢、精确度低、振动系统失谐等问题,且为了克服传统PWM专用芯片产生频率漂移大的缺点,采用了直接频率合成技术(DDS)来产生高频信号,实现具有高稳定性、高精度性的大功率超声电源.为提高振动系统的功率因数,对超声换能器进行电感调谐匹配,并根据匹配端采样得到的电压、电流信号,提出了利用锁相控制技术来实现频率自动跟踪的方法.
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| 关 键 词： | 超声电源 直接频率合成 电感匹配 频率跟踪 锁相控制 |
| 收稿时间： | 2016-03-16 |
Design of the Ultrasonic Power Supply System Based on DDS |
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| LI Xialin and ZHU Wu. Design of the Ultrasonic Power Supply System Based on DDS[J]. Journal of Shanghai University of Electric Power, 2017, 33(1): 81-85 |
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| Authors: | LI Xialin and ZHU Wu |
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| Affiliation: | School of Electronics and Information Engineering,Shanghai University of Electric Power, Shanghai 200090, China and School of Electronics and Information Engineering,Shanghai University of Electric Power, Shanghai 200090, China |
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| Abstract: | In improving the speed and precision of frequency tracking and eliminating the frequency mismatch of vibrating system of ultrasonic power supply,the traditional PWM special-purpose chip has a big frequency drift.Direct Digital Synthesizer technology (DDS) is used to produce the high frequency signal,and the high power ultrasonic electric generator with the high stability and accuracy is realized.Through the external inductance series matching of the ultrasonic transducer to enhance the power factor of vibrating system,then samples of the voltage and current signal of the electric matching end are taken,using the phase-locked loop control to realize the automatic frequency tracking. |
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| Keywords: | ultrasonic power supply DDS inductance matching frequency tracking phase-locked loop control |
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