著者

浅野 洋介 渡邊 孝一 伊藤 裕一 伊藤 正英 栗本 育三郎

出版者

公益社団法人 計測自動制御学会

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.59, no.1, pp.1-9, 2023 (Released:2023-01-21)

参考文献数

23

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The authors have proposed Vapor Pressure Deficit (VPD) control methods for a solar-light-type plant factory (greenhouse) with a fog-cooling system. In particular, a proportional feedback controller with a variable gain is adopted in an actual system. In the system, however, there is some dead time—was experimentally confirmed by vision-based observation—which brings vibration to the value of VPD. This paper proposes a VPD control considering the dead time of the fog generation by using a communication disturbance observer with a high pass filter (HPF-CDOB). The stability of the whole control system is verified by the small gain theorem. The effectiveness of the proposed control method was demonstrated via experiments. In the experimental result during the high-temperature phase, the proposed method achieves a 81% reduction of the average error and a 20% reduction of the standard deviation in comparison with the conventional method.

著者

浅野 洋介

出版者

木更津工業高等専門学校

雑誌

木更津工業高等専門学校紀要 (ISSN:2188921X)

巻号頁・発行日

vol.46, pp.7-10, 2013-01-31

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In this paper, we proposed the real-time control system on non-real-time OS using the micro computer with USB interface. Generally, it was expensive and difficult to construct the real-time control system. However, we achieved proposed system inexpertly by using the micro computer as a scheduler.The characteristic are no special interface for the control software like MATLAB and the real-time control performance on the non-real-time system. Moreover, we developed the 2-link robot arm to evaluate the performance of the proposed system. As a result, the proposed system operated in the low-speed area.