| 王杰,徐新盛,吴英姿.一种采用脉冲串的自适应有源干扰抵消器[J].,2004,23(6):45-50 |
| 一种采用脉冲串的自适应有源干扰抵消器 |
| An adaptive active interference canceller using pulse trains |
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| 中文摘要: |
| 在许多应用中,周期性干扰是由旋转的机械设备所产生的。 一个周期性信号可以与一个特殊形式的周期性的脉冲串完全相干。本文提出了一种采用脉冲串的自适应有源噪声抵消器(AANC)来抵消周期性干扰,这种抵消器产生一个与干扰信号相同步的周期性的单位脉冲串作为参考输入。将这种有源噪声抵消器和Delayed-X LMS算法相结合,可以大大地减小运算量,并且也可以保证良好的收敛特性。理论分析和计算机仿真验证了本文的结果。 |
| 英文摘要: |
| In many applications, a periodic interference is generated by a rotating machine. Now it is known that a periodic signal can be completely coherent with a special periodic pulse train. In this paper, an adaptive active noise canceller (AANC) using a pulse train is then introduced to reduce the periodic interference. The constant amplitude periodic pulse train which is synchronous with the interference signal is used as a reference input for the adaptive filter. It is shown herein that the total computational cost decreases if the AANC is combined with the Delayed-X LMS algorithm, and that excellent convergence performance can be obtained. A theoretical analysis and computer simulations validate the results. |
| DOI：10.11684/j.issn.1000-310X.2004.06.010 |
| 中文关键词: 自适应有源噪声抵消 周期性干扰 延时-XLMS算法 |
| 英文关键词: aptive active noise canceller Periodic interference Delayed-X LMS algorithm |
| 基金项目:水声技术国防科技重点实验室基金资助项目(51445070101ZS2301) |
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