| Project/Area Number |
20510168
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Social systems engineering/Safety system
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| Research Institution | National Institute of Occupational Safety and Health, Japan |
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Principal Investigator |
OHSAWA Atsushi National Institute of Occupational Safety and Health, Japan, 電気安全研究グループ, 上席研究員 (20358435)
|
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| Research Collaborator |
MORROW R. 独立行政法人労働安全衛生総合研究所
MURPHY A.B. CSIRO
大内 幹夫 東京電機大
和泉 健吉 シシド静電気
野村 信雄 春日電機
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 静電気障災害 / 帯電 / 除電 / コロナ放電 / イオン / 電気流体モデル / 電気流体力学 / 火災 / 減災 / 品質管理 / 品質管理システム |
|---|
| Research Abstract |
Phenomena of charge neutralization with several types of ionizers were investigated on the basis of a 2D-electrohydrodynamic modeling. The results obtained could explain how practical troubles occur. It was found that any spatiotemporal charge due to unbalance in positive and negative ion densities yields an offset voltage on an object to be neutralized. For optimum neutralization, quasi-neutralized distribution in all regions is of great importance ; therefore, ionizers with an ion source having quasi-neutralized charge densities are necessary. In addition, a modified method to get zero offset voltage for AC and pulse-DC ionizers was proposed.
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