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磁轴承PWM开关功放电流实时降噪

汤恩琼 房建成 韩邦成

汤恩琼, 房建成, 韩邦成等 . 磁轴承PWM开关功放电流实时降噪[J]. 北京航空航天大学学报, 2015, 41(2): 296-301. doi: 10.13700/j.bh.1001-5965.2014.0154
引用本文: 汤恩琼, 房建成, 韩邦成等 . 磁轴承PWM开关功放电流实时降噪[J]. 北京航空航天大学学报, 2015, 41(2): 296-301. doi: 10.13700/j.bh.1001-5965.2014.0154
TANG Enqiong, FANG Jiancheng, HAN Bangchenget al. Real-time de-noising of PWM switching amplifier current in magnetic bearing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 296-301. doi: 10.13700/j.bh.1001-5965.2014.0154(in Chinese)
Citation: TANG Enqiong, FANG Jiancheng, HAN Bangchenget al. Real-time de-noising of PWM switching amplifier current in magnetic bearing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 296-301. doi: 10.13700/j.bh.1001-5965.2014.0154(in Chinese)

磁轴承PWM开关功放电流实时降噪

doi: 10.13700/j.bh.1001-5965.2014.0154
基金项目: 国家自然科学基金资助项目(61203203); 航空科学基金资助项目(2012ZB51019); 北京航空航天大学基础科研业务费项目(50100002014117012)
详细信息
    作者简介:

    汤恩琼(1985—), 男, 河南平顶山人, 博士生, tang.forever@163.com

    通讯作者:

    房建成(1965—),男, 山东临沂人,教授,Fangjiancheng@buaa.edu.cn, 主要研究方向为磁轴承控制与航天器导航.

  • 中图分类号: V221+.3;TH133

Real-time de-noising of PWM switching amplifier current in magnetic bearing

  • 摘要: 针对传统低通滤波器在脉冲宽度调制(PWM, Pulse Width Modulation)开关功放电流降噪过程中存在去噪效果与系统带宽难以兼顾的问题,提出了一种基于提升小波变换的功放电流实时降噪法.首先基于dB4提升小波算法,采用滑动数据窗、对称边界拓展和阈值法强制降噪等相结合的方案实现对功放电流的实时降噪.然后根据不同小波分解层数对系统截止频率的影响,确定合适的小波分解层数.实验证明,提升小波实时降噪算法既可以有效地滤除功放电流噪声,又对系统带宽和相角滞后影响较小,非常适用于对实时性和信噪比都有较高要求的磁悬浮高速转子系统.

     

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出版历程
  • 收稿日期:  2014-03-25
  • 网络出版日期:  2015-02-20

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