NDLI: Multi-subnet wireless sensing feedback for decentralized ℋ2 control with information overlapping

Content Provider	IEEE Xplore Digital Library
Author	Yang Wang Law, K.H. Chin-Hsiung Loh Shieh-Kung Huang Kung-Chun Lu Pei-Yang Lin
Copyright Year	2011
Description	Author affiliation: Dept. of Civil & Environ. Eng., Stanford Univ., Stanford, CA, USA (Law, K.H.) \|\| Dept. of Civil Eng., Nat. Taiwan Univ., Taipei, Taiwan (Chin-Hsiung Loh; Kung-Chun Lu; Pei-Yang Lin) \|\| Sch. of Civil & Environ. Eng., Georgia Inst. of Technol., Atlanta, GA, USA (Yang Wang) \|\| Nat. Center for Res. on Earthquake Eng., Taipei, Taiwan (Shieh-Kung Huang)
Abstract	This paper studies a time-delayed decentralized structural control strategy that aims to minimize the $H_{2}$ norm of the closed-loop system. In a decentralized control system, control decisions are made based on data acquired from sensors located in the vicinity of a control device. Due to the non-convexity nature of the optimization problem caused by a decentralized architecture, controller design for decentralized systems remains a major challenge. In this work, a homotopy method is employed to gradually transform a centralized controller into multiple decentralized controllers. Linear matrix inequality (LMI) constraints are adopted in the homotopic transformation to ensure closed-loop control performance. In addition, multiple decentralized control architectures are implemented with a network of wireless sensing and control nodes. The sensor network allows simultaneous operation of multiple wireless subnets. Both the theoretical development and system implementation support the information overlapping between decentralized subnets. For validation, the wireless sensing and control system is installed on a six-story laboratory steel structure controlled by magnetorheological (MR) dampers. Shake-table experiments are conducted to demonstrate the performance of the wireless decentralized control strategies.
Sponsorship	Control Syst. Soc.
Starting Page	3104
Ending Page	3109
File Size	274476
Page Count	6
File Format	PDF
ISBN	9781457700804
ISSN	07431619
e-ISBN	9781457700811
DOI	10.1109/ACC.2011.5991055
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Wireless communication Sensors Wireless sensor networks Distributed control Shock absorbers Linear matrix inequalities
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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