| Presentation | 2021-12-08 Noise Source Estimation Method using the Cross Spectrum Ichiro Akahori, Daichi Sugiura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We assume that emission noise radiated and conducted from electronic device with multiple noise sources can be expressed by the linear frequency weighted sum of the signals of these noise sources. If the degree of influence of each noise source on the emission noise can be estimated, it will be possible to identify the prime noise source for which EMI countermeasures should be taken. In this report, we first clearly define the degree of influence as the influence factor and show that the influence factor can be estimated from the respective power spectra of the emission noise and the noise source signal and the cross spectrum of both. The influence factor of individual noise sources can be estimated if the noise sources are mutually independent. For example, even if all noise sources are white noise, it is possible to estimate those influence factors on the emission noise. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Noise Source Estimation / Influence Factor / Cross Spectrum / Coherence Function / Mutually Independent Noise Sources |
| Paper # | EMCJ2021-59 |
| Date of Issue | 2021-12-01 (EMCJ) |
| Conference Information | |
| Committee | EMCJ / IEE-EMC / IEE-SPC |
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| Conference Date | 2021/12/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Atsuhiro Nishikata(Tokyo Inst. of Tech.) / 石上 忍(東北学院大学) / 伊東 淳一(長岡技術科学大学) |
| Vice Chair | Kimihiro Tajima(NTT-AT) / / 小高 章弘(富士電機) |
| Secretary | Kimihiro Tajima(NAIST) / (Hitachi) / 小高 章弘(鉄道総合技術研究所) |
| Assistant | Kiyoto Matsushima(Hitachi) / Hiroyoshi Shida(EMC Tech.) / Tohlu Matsushima(Kyushu Inst. of Tech.) / 井渕 貴章(大阪大学) / 日下 佳祐(長岡技術科学大学) / 高見 弘(芝浦工業大学) |
| Paper Information | |
| Registration To | Technical Committee on Electromagnetic Compatibility / Technical Meeting on Electromagnetic Compatibility / Technical Meeting on Semiconductor Power Converter |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Noise Source Estimation Method using the Cross Spectrum |
| Sub Title (in English) | |
| Keyword(1) | Noise Source Estimation |
| Keyword(2) | Influence Factor |
| Keyword(3) | Cross Spectrum |
| Keyword(4) | Coherence Function |
| Keyword(5) | Mutually Independent Noise Sources |
| 1st Author's Name | Ichiro Akahori |
| 1st Author's Affiliation | DENSO EMC ENGINEERING SERVICE CORPORATION(DENSO EMCES) |
| 2nd Author's Name | Daichi Sugiura |
| 2nd Author's Affiliation | DENSO EMC ENGINEERING SERVICE CORPORATION(DENSO EMCES) |
| Date | 2021-12-08 |
| Paper # | EMCJ2021-59 |
| Volume (vol) | vol.121 |
| Number (no) | EMCJ-288 |
| Page | pp.pp.28-33(EMCJ), |
| #Pages | 6 |
| Date of Issue | 2021-12-01 (EMCJ) |