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分数阶RLβCα带通滤波电路特性研究

更新时间:2020-10-25 23:45:54 大小:11M 上传用户:gsy幸运查看TA发布的资源 标签:带通滤波电路 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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将RLC带通滤波电路拓展至分数阶域,探究其在分数阶下的新特性与规律。首先,基于分数阶电容器与电感器数学模型,推导出分数阶RLC带通滤波电路阻抗表达式一般情况。进一步,对分数阶RLC带通滤波电路阻抗灵敏度与相位特性展开研究。此外,从滤波角度,给出分数阶RLC带通滤波电路幅频特性与相频特性变化规律,并得出整数阶下滤波电路无法获得的新特性。最后,给出分数阶滤波电路优化设计举例。理论分析与数值实验结果相互印证。研究结果表明,较大分数阶阶次下,分数阶RLC带通滤波电路将获得令人满意的滤波效果。

This work puts forward to study the underexplored fundamentals and laws of the RLC band-pass filter circuit in the fractional domain.First,the general expression of impedance of the fractional-order RLC band-pass was systematically derived based on the fractional-order capacitors and inductors.Furthermore,the sensitivity of the impedance and phase at different fractional orders were analyzed.In addition,from the perspective of the filter performance,the amplitude-frequency and phase-frequency characteristics at different systemic variables were presented,and several important conclusions were drawn,which could not be obtained in the traditional cases.Finally,an optimized filter circuit was exemplified.The theoretical analyses are in consistent with the numerical experiments.The results show the better filter performance would be obtained at higher fractional orders.

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分数阶RLβCα带通滤波电路特性研究.pdf 11M

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