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システム/制御/情報 Vol. 24 (2011), No. 11

ISIJ International
belloff
オンライン版ISSN: 2185-811X
冊子版ISSN: 1342-5668
発行機関: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

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システム/制御/情報 Vol. 24 (2011), No. 11

アドホックネットワークを用いた駐車場における防犯カメラシステムの提案と評価

植村 渉, 村田 正

pp. 259-268

抄録

In recent year, ad-hoc network technology has gained attention, which consists of not access points and base stations but of wireless nodes. In this network, it is difficult to maintain the whole data flow because of the absence of access points as the network administrator when nodes share the data. This paper proposes the security camera system which has only nodes sharing the taken pictures and has the robustness against the data destroying. The sender node cannot know whether packets are received or not by neighboring nodes in broadcasting because of a unidirectional communication. So in our proposed method, the sender node selects the receiver node from neighboring nodes, and they communicate with each other. On the other hand, neighboring nodes listen to packets between the sender node and the receiver node. After that, this method guarantees nodes of more than 1 which receive a data in broadcasting. We construct the security camera system using wireless nodes with the IEEE 802.15.4 specification and show the performance for security. At last, using the simulator we show the efficiency in the large environment, and conclude this paper.

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アドホックネットワークを用いた駐車場における防犯カメラシステムの提案と評価

バックステッピング法を用いた拡散項を有する並流型熱交換方程式の出力フィードバック制御

佐野 英樹, 楳園 大知, 南條 雅文, 江頭 佑典

pp. 269-279

抄録

This paper is concerned with the problem of enhancing the stability of a parallel-flow heat exchanger equation with diffusive terms, under boundary control and boundary observation. By introducing two new variables, the system is expressed as two decoupled subsystems, where each subsystem is exponentially stable. In order to enhance the stability of the whole system, we use a backstepping method to construct infinite-dimensional observer-based controllers for each subsystem. The Lyapunov method is successfully applied to prove the closed-loop stability with the controller. This paper gives the controller design for the case of collocated sensor and actuator as well as for the anticollocated case.

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バックステッピング法を用いた拡散項を有する並流型熱交換方程式の出力フィードバック制御

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