The Study on Adaptive Control of Photon Beam Fluctuation
碩士 === 國立中央大學 === 機械工程研究所 === 88 === The purpose of this thesis is attempted to develop a reducing photon beam fluctuation system. A new ideal proposed to correct the photon beam drifts is by tilting and rotating the vertical focusing mirror (VFM) not using magnetic bump. Therefore, the photon bea...
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| Format: | Others |
| Language: | zh-TW |
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2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/73747640493956011913 |
| Summary: | 碩士 === 國立中央大學 === 機械工程研究所 === 88 === The purpose of this thesis is attempted to develop a reducing photon beam fluctuation system. A new ideal proposed to correct the photon beam drifts is by tilting and rotating the vertical focusing mirror (VFM) not using magnetic bump. Therefore, the photon beam drifts is eliminated independently at the beamline rather than affecting optical quality at others. When a photon beam fluctuation is regarded as vibration or acoustic noise, the adaptive control system is practicable.
The adaptive feedforward controller by using FXLMS algorithm is designed to reduce random fluctuation with 100-Hz bandwidth. Experimental results demonstrate the effectiveness of the proposed method in controlling broadband photon beam fluctuation up to 60 %.
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