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标题：基于频谱分离的多路可调直流电源 |
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作者：狄思思，张本锋，李华峰 |
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| 2016年第12期 访问次数：292次 |
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摘要：同时激励多片压电纤维复合材料需要多路不对称高压交流电源协同工作，为保障该高压交流电源系统工作在理想状态，设计了一种基于频谱分离的多路可调直流电源，持续提供高压直流电源。在傅里叶变化的理论支持下，首先利用PSoC3处理器构造了一组包含多路频率成分的低压信号，该信号经过变压器升压至期望值后，分别通过低通、带通、高通选频电路得到不同频段的高压信号，整流滤波后得到最终的多路直流电源。分别改变三个不同频段的高压信号的占空比，可以独立调节三路输出直流电压的幅值。PSpice扫频分析和系统实验测试结果表明各部分运行可靠，输出电压稳定，可以为激励压电纤维复合材料的高压交流电路供电。
关键词：频谱分离；多通道；直流电源；选频；PSpice
Abstract: Simultaneous stimulation of multiple pieces of MFC (Macro Fiber Composite) calls for DC power supply of different amplitude which contributes to the cooperation among multiple AC powers. This paper designed a multichannel adjustable DC power supply based on spectral separation for the accomplishment of a MFCbased artificial caudal fin. First, a mix of signals in different frequency band was constructed using PSoC3 processor based on the Fourier transform. Then, the independent highvoltage signals boosted by a transformer were separated with lowpass, bandpass, and highpass filter respectively. Finally, the frequency sweeping analysis using PSpice and experimental results prove the feasibility and reliability of the design.
Key words: spectral separation; multichannel; DC supply; frequency selection; PSpice |
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