書誌事項
- タイトル別名
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- PWM Power Amplifier with Digital Optimal Preview Current Control Scheme for Gradient Magnetic Field in MRI Systems
- MRI ケイシャ ジバ ハッセイヨウ PWM デンリョク ゾウフクキ ノ デンリュウ パターン ツイジュウ ディジタル サイテキ ヨケン セイギョ
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This paper deals with a two-paralleled switch-mode PWM power amplifier using current pattern tracking scheme in order to generate a gradient magnetic field in the Magnetic Resonance Imaging (MRI) system. This power conversion circuit has 8-IGBTs at their inputs/outputs so as to realize further high-power density, and to reduce current switching ripple of the Gradient Coils (GCs) as well as to raise current responses. The modern optimal preview control implementation in 2 parallel bridge type PWM power amplifier can improve the quick and precise current pattern tracking control responses in accordance with the specified values for the magnetic field in GCs. It is clearly proven from a theoretical point of view that the proposed control software is to be enlarged highly the diagnostic target and improves the image quality of MRI systems.
収録刊行物
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- 電気学会論文誌Ｄ（産業応用部門誌）
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電気学会論文誌Ｄ（産業応用部門誌） 121 (7), 756-763, 2001
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204658876544
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- NII論文ID
- 10006088454
- 10012556520
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- NII書誌ID
- AN10012320
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- ISSN
- 13488163
- 09136339
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- NDL書誌ID
- 5827312
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- NDL
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