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利用數字式諧波反饋實現交流磁測量磁通波形正弦

張燕賓,  瞿清昌,  龍毅,  常永勤,  葉榮昌

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文章導航 > 工程科學學報  > 2007 >  29(1): 82-85
張燕賓, 瞿清昌, 龍毅, 常永勤, 葉榮昌. 利用數字式諧波反饋實現交流磁測量磁通波形正弦[J]. 工程科學學報, 2007, 29(1): 82-85. doi: 10.13374/j.issn1001-053x.2007.01.018
引用本文: 張燕賓, 瞿清昌, 龍毅, 常永勤, 葉榮昌. 利用數字式諧波反饋實現交流磁測量磁通波形正弦[J]. 工程科學學報, 2007, 29(1): 82-85. doi: 10.13374/j.issn1001-053x.2007.01.018
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ZHANG Yanbin, JU Qingchang, LONG Yi, CHANG Yongqin, YE Rongchang. Achieving the sinusoidal waveform of magnetic flux in AC magnetic measurement by digital feedback of harmonic compensation[J]. Chinese Journal of Engineering, 2007, 29(1): 82-85. doi: 10.13374/j.issn1001-053x.2007.01.018
Citation: ZHANG Yanbin, JU Qingchang, LONG Yi, CHANG Yongqin, YE Rongchang. Achieving the sinusoidal waveform of magnetic flux in AC magnetic measurement by digital feedback of harmonic compensation[J]. Chinese Journal of Engineering, 2007, 29(1): 82-85. doi: 10.13374/j.issn1001-053x.2007.01.018
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利用數字式諧波反饋實現交流磁測量磁通波形正弦

doi: 10.13374/j.issn1001-053x.2007.01.018

  • 1. 北京科技大學材料科學與工程學, 北京 100083;

  • 2. 中國計量院, 北京 100013

基金項目: 

國家自然科學基金資助項目(No.50471094)

詳細信息
    作者簡介:

    張燕賓(1980-),男,碩士研究生;龍毅(1955-),女,教授,博士生導師

  • 中圖分類號: TP202+.2

Achieving the sinusoidal waveform of magnetic flux in AC magnetic measurement by digital feedback of harmonic compensation

  • 1. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;

  • 2. Electromagnetic Division, National Institute of Metrology, Beijing 100013, China

    摘要
  • 摘要: 在磁通正弦條件下進行軟磁合金交流磁性測量可以獲得高準確度的測量結果.利用數字式諧波反饋原理,通過對磁通波形的分析獲得了磁通波形中的諧波含量,然后在電源輸出端補償與磁通波形中諧波幅值相反、相位相同的諧波,使磁通波形得到了改善.通過對硅鋼樣品在不同磁化程度時的測量,檢驗這一方法.當硅鋼樣品磁化為1·87T時,經諧波反饋后次級電壓的波形系數也能滿足國家標準的要求.

     

    Abstract: Sinusoidal waveform of magnetic flux is needed to obtain high-exactitude AC properties measurement results of soft magnets. A new mode to achieve the condition by digital feedback of harmonic compensation was introduced, the waveform of magnetic.flux was analyzed, and the harmonic content in the wave was obtained. The waveform with the same altitude and opposite phase to the harmonic was supplied to the waveform-framing unit, and then the harmonic in output wave was counteracted. Measurement results of electrical steels showed that, after feedback, even at a peak value of induction up to 1.87 T, the form factor fulfilled the condition.

     

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出版歷程
  • 收稿日期:  2005-09-23
  • 修回日期:  2006-05-10
  • 網絡出版日期:  2021-08-16

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