| 주 저자 | Park B.C. |
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| 공동 저자 | A.S. Choi, J.W. Jeong, E. Lee. |
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| 소속 | * Department of Architectural Engineering Sejong University Kunja-Dong Kwangjin-Gu Seoul Republic of Korea 143-747, ** Building Technologies Department Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90R3111 Berkeley CA 94720 USA |
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| Abstract | Daylight responsive dimming systems have been used in few buildings to date because they require
improvements to improve reliability. The key underlying factor contributing to poor performance is the
variability of the ratio of the photosensor signal to daylight workplane illuminance in accordance with
sun position, sky condition, and fenestration condition. Therefore, this paper describes the integrated
systems between automated roller shade systems and daylight responsive dimming systems with an
improved closed-loop proportional control algorithm, and the relative performance of the integrated
systems and single systems. The concept of the improved closed-loop proportional control algorithm for
the integrated systems is to predict the varying correlation of photosensor signal to daylight workplane
illuminance according to roller shade height and sky conditions for improvement of the system accuracy.
In this study, the performance of the integrated systems with two improved closed-loop proportional
control algorithms was compared with that of the current (modified) closed-loop proportional control
algorithm. In the results, the average maintenance percentage and the average discrepancies of the target
illuminance, as well as the average time under 90% of target illuminance for the integrated systems
significantly improved in comparison with the current closed-loop proportional control algorithm for
daylight responsive dimming systems as a single system. |
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| Keyword | Integrated systems, Automated roller shade systems, Daylight responsive dimming systems, Daylighting, Photoelectric controls |
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| 페이지 | pp. 747~757 |
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| 논문 파일 |
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| 게재일시 |
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| DOI | - |
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| 학회/저널명 | Building and Environment Vol.46, No.3 |
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| 년도 | 2011 |
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| 추가 문구 | http://dx.doi.org/10.1016/j.buildenv.2010.10.007 |
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| 등록 일시 | 2025-06-18 13:31:11 |
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