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Decentralized wireless structural sensing and control with multiple system architectures operating at different sampling frequencies

Yang Wang, R. Andrew Swartz, Andrew Zimmerman, Amy C. Askin, Jerome P. Lynch, Kincho H. Law, Kung-Chun Lu, Chin-Hsiung Loh, Tribikram Kundu
2008 Health Monitoring of Structural and Biological Systems 2008  
Commanded by wireless sensors and controllers, semi-active magnetorheological (MR) dampers are installed between neighboring floors for applying real-time feedback control forces.  ...  Multiple centralized/decentralized feedback control architectures have been investigated in the experiments, in combination with different sampling frequencies.  ...  A feedback structural control system contains a network of sensors, controllers, and actuators.  ... 
doi:10.1117/12.776624 fatcat:7kbsewchnjfqlpgogbf52vi5ga

Decentralized civil structural control using real-time wireless sensing and embedded computing

Yang Wang, R. Andrew Swartz, Jerome P. Lynch, Kincho H. Law, Kung-Chun Lu, Chin-Hsiung Loh
2007 Smart Structures and Systems  
latencies associated with wireless sensor networks.  ...  Closed-loop feedback control algorithms are embedded within the wireless sensor prototypes allowing them to serve as controllers in the control system.  ...  In a decentralized control system, the sensing and control network is divided into multiple subsystems.  ... 
doi:10.12989/sss.2007.3.3.321 fatcat:ex5gee7jqba77k6wscldtmcehy

Stochastic Optimal Linear Control of Wireless Networked Control Systems with Delays and Packet Losses [article]

Zhuwei Wang, Xiaodong Wang, Lihan Liu
2014 arXiv   pre-print
In this paper, the design of the optimal decentralized state-feedback controllers is considered for a wireless sensor and actuator network (WSAN) with stochastic network-induced delays and packet losses  ...  In particular, taking advantage of multiple controllers, we model the WSAN as a wireless networked control system (NCS) with decentralized controllers, and then formulate the stochastic optimal state-feedback  ...  A wireless NCS with multiple (p) decentralized controllers. Actuator Plant 6 1 4 3 5 7 8 9 Wireless multihop networks 2 Controllers Sensor Fig. 1.  ... 
arXiv:1410.4601v1 fatcat:4x63htzg4rds3omtnlvdpsbcne

Reliable information management in a low-cost wireless structural monitoring and control network

Yang Wang, Jerome P. Lynch, Kincho H. Law, Chin-Hsiung Loh, Ahmed Elgamal, Masayoshi Tomizuka, Chung-Bang Yun, Victor Giurgiutiu
2007 Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007  
Traditional monitoring and control systems depend on the use of cables to transmit sensor data and actuation signals.  ...  With recent advances in wireless communication technology, wireless networks can potentially offer a low-cost alternative to traditional cable-based sensing and control systems.  ...  and control networks. Laboratory and field validation tests illustrate the efficacy and robustness of the information management in the prototype wireless structural monitoring and control system.  ... 
doi:10.1117/12.715970 fatcat:j6xbcuf6irfddivkhnh4mabjhu

Sufficiency of Local Feedback for Sensor-Actuator Network-Based Control Systems with Distance Sensitivity Properties

Vinod Kulathumani, Bryan Lemon
2013 Journal of Sensor and Actuator Networks  
Timely dissemination of required state information poses a significant challenge in the design of distributed sensor/actuator network-based control systems.  ...  In this paper, distance sensitivity properties inherent in many sensor-actuator network-based control systems are exploited to establish conditions under which information within a bounded locality of  ...  In [19, 20] , a decentralized technique is presented for set-point control applications using wireless sensor actuator networks in which each actuator has a bounded influence region.  ... 
doi:10.3390/jsan2030409 fatcat:g4ys4wbwpvebtdgudcubvfzvom

Structural Control with Multi-Subnet Wireless Sensing Feedback: Experimental Validation of Time-Delayed Decentralized H* Control Design

Yang Wang, Kincho H. Law
2011 Advances in Structural Engineering  
A feedback structural control system involves a network of sensors and control devices.  ...  This study explores decentralized feedback control using wireless sensors incorporated with a computational core and a signal generation module.  ...  Decentralized feedback control can take advantage of a network of wireless sensors incorporated with a computational core and signal generation module (Wang, et al. 2007 , Wang, et al. 2008 .  ... 
doi:10.1260/1369-4332.14.1.25 fatcat:dutd465zfzfa5e7uzyms7kr6ga

Topological Conditions for In-Network Stabilization of Dynamical Systems

Miroslav Pajic, Rahul Mangharam, George J. Pappas, Shreyas Sundaram
2013 IEEE Journal on Selected Areas in Communications  
the plant's sensors and decentralized controllers at the actuators.  ...  Specifically, we study an architecture called the "Wireless Control Network" (WCN), where each wireless node maintains a state, and periodically updates it as a linear combination of neighboring plant  ...  challenges for real-time feedback control. For instance, delays may be introduced if a multi-hop wireless network is used to route information between the plant sensors, actuators and controllers.  ... 
doi:10.1109/jsac.2013.130415 fatcat:pfq36vsuqfcptkmcfaea3oxj4i

Evaluating Low-Power Wireless Cyber-Physical Systems [article]

Dominik Baumann and Fabian Mager and Harsoveet Singh and Marco Zimmerling and Sebastian Trimpe
2018 arXiv   pre-print
A cyber-physical system (CPS), however, integrates control with network elements, which must be evaluated together under real-world conditions to assess control performance, stability, and associated costs  ...  Using one or multiple inverted pendulums as physical system, our approach supports a spectrum of realistic CPS scenarios that impose different requirements onto the control and networking elements.  ...  , and the Max Planck Society.  ... 
arXiv:1804.09582v1 fatcat:togybdizejbdhkgm2wafw4tr7y

Strategic Network Utilization in a Wireless Structural Control System for Seismically Excited Structures

R. Andrew Swartz, Jerome P. Lynch
2009 Journal of Structural Engineering  
Structural control systems in current use depend on extensive wired communication systems to connect sensors and actuators with a centralized controller.  ...  A wireless sensor network commanding magnetorheological dampers is shown to be effective in controlling a multistory structure using the partially decentralized control architecture proposed.  ...  Law of Stanford University, Professor Yang Wang of the Georgia Institute of Technology, and Professor Chin-Hsiung Loh of National Taiwan University.  ... 
doi:10.1061/(asce)st.1943-541x.0000002 fatcat:ahmi6kckmnc5dbxlggxrpagp5i

Stabilizability over deterministic relay networks

Miroslav Pajic, Shreyas Sundaram, George J. Pappas
2013 52nd IEEE Conference on Decision and Control  
We consider the problem of linear system stabilization using a set of decentralized controllers that communicate with the plant's sensors over a network that employs linear network coding.  ...  Since these networks can be described as linear time-invariant systems with specific transfer functions, this network representation allows us to reason about the control system and network (and their  ...  In these systems, a set of distributed sensors and actuators is connected to a realtime network used to deliver information from the sensors to the controllers and actuators.  ... 
doi:10.1109/cdc.2013.6760504 dblp:conf/cdc/PajicSP13 fatcat:4xx6sukpfrbbpbn4hpu7ft2x5i

Topological conditions for wireless control networks

Miroslav Pajic, Shreyas Sundaram, George J. Pappas, Rahul Mangharam
2011 IEEE Conference on Decision and Control and European Control Conference  
multiplicity of any unstable eigenvalue, stabilizing controllers can be constructed at each actuator.  ...  We study the problem of stabilizing a linear system over a wireless control network.  ...  WIRELESS CONTROL NETWORK Consider the system in Fig. 1 , where a wireless network is used to control a system Σ = (A, B, C) with state x ∈ R n , input u ∈ R m and output y ∈ R p .  ... 
doi:10.1109/cdc.2011.6161347 dblp:conf/cdc/PajicSPM11 fatcat:a5mpgytgvbapthpb35nyxymipu

Partial Decentralized Wireless Control Through Distributed Computing for Seismically Excited Civil Structures: Theory and Validation

R. Andrew Swartz, Jerome P. Lynch
2007 American Control Conference (ACC)  
This study presents a partially-decentralized control scheme for wireless control of large civil structures.  ...  The wireless sensors command actuators with LQR derived state-feedback control forces based on state vectors locally calculated from embedded Kalman estimators.  ...  ACKNOWLEDGEMENTS The authors would like to acknowledge their gratitude for invaluable assistance provided by Professor Kincho Law and Mr.  ... 
doi:10.1109/acc.2007.4282884 dblp:conf/acc/SwartzL07 fatcat:ca6huwkxezgnzdxefow5jg6hd4

2011 Index IEEE Transactions on Automatic Control Vol. 56

2011 IEEE Transactions on Automatic Control  
., +, TAC Dec. 2011 2962- 2967 Distributed Multi-Actuator Control for Workload Balancing in Wireless Sensor and Actuator Networks.  ...  Lu, L., +, TAC Dec. 2011 2997-3001 Distributed Multi-Actuator Control for Workload Balancing in Wireless Sensor and Actuator Networks.  ...  Pipes Stochastic Tubes in Model Predictive Control With Probabilistic Constraints. Cannon, M., +, Poles and zeros Computation of the General -Lossless Factorization.  ... 
doi:10.1109/tac.2011.2179989 fatcat:6qqqyveptjhjngqqzclzq7cxym

Implementation of a closed-loop structural control system using wireless sensor networks

J. P. Lynch, Y. Wang, R. A. Swartz, K. C. Lu, C. H. Loh
2008 Structural Control and Health Monitoring: The Bulletin of ACS  
As a result, feedback control systems have been widely adopted with over 50 buildings and 20 long-span bridges in Asia currently employing feedback control [9] .  ...  In this study, a wireless sensor prototype capable of data acquisition, computational analysis and actuation is proposed for use in a real-time structural control system.  ...  Additional support was provided by the National Centre for Research on Earthquake Engineering (NCREE) and the National Science Council of Taiwan.  ... 
doi:10.1002/stc.214 fatcat:tg3bvnvamzcsvhpyx7rz5ekxdy

Wireless Sensing, Actuation and Control – With Applications to Civil Structures [chapter]

Yang Wang, Jerome P. Lynch, Kincho H. Law
2006 Lecture Notes in Computer Science  
For example, actuation interfaces can be used to induce stress waves in structural elements by wireless "active" sensors.  ...  Structural control tests have been performed to validate the wireless sensing and actuation system.  ...  With a wireless sensor network capable of exchanging real-time sensor data among the sensing units, feedback control decisions can be determined in real time to limit structural responses.  ... 
doi:10.1007/11888598_60 fatcat:rwgszv45vnehhkbw4yo4vhq24a
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