scholarly journals A New Perspective to Algebraic Characterization on Controllability of Multiagent Systems

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Bo Liu ◽  
Housheng Su ◽  
Licheng Wu ◽  
Shengchao He
Keyword(s):  
Multiagent Systems ◽  
Sufficient Conditions ◽  
Algebraic Characterization ◽  
Multiagent Networks ◽  
Systems And Control ◽  
Control Community ◽  
New Perspective ◽  
And Control ◽  
Networked Multiagent Systems

Recently, algebraic characterization of multiagent controllability through its topology has been widely concerned by the systems and control community. The controllability of leader-follower networked multiagent systems under the framework of generic linear dynamics is firstly discussed via λ-matrix. Some new algebra-theoretic necessary and/or sufficient conditions of the controllability for generic linear multiagent systems are established. Moreover, the controllable conditions for multiagent networks with special topological graphs through λ-matrix are presented.

Algebraic characterization of infinite Markov chains where movement to the right is limited to one step

1977 ◽  
Vol 14 (04) ◽  
pp. 740-747 ◽  
Author(s):  
Ester Samuel-Cahn ◽  
Shmuel Zamir
Keyword(s):  
Markov Chain ◽  
Markov Chains ◽  
Necessary Conditions ◽  
Sufficient Conditions ◽  
Algebraic Characterization ◽  
Transient States ◽  
One Step ◽  
The Right

We consider an infinite Markov chain with states E 0, E 1, …, such that E 1, E 2, … is not closed, and for i ≧ 1 movement to the right is limited by one step. Simple algebraic characterizations are given for persistency of all states, and, if E 0 is absorbing, simple expressions are given for the probabilities of staying forever among the transient states. Examples are furnished, and simple necessary conditions and sufficient conditions for the above characterizations are given.

Algebraic characterization of infinite Markov chains where movement to the right is limited to one step

1977 ◽  
Vol 14 (4) ◽  
pp. 740-747 ◽  
Author(s):  
Ester Samuel-Cahn ◽  
Shmuel Zamir
Keyword(s):  
Markov Chain ◽  
Markov Chains ◽  
Necessary Conditions ◽  
Sufficient Conditions ◽  
Algebraic Characterization ◽  
Transient States ◽  
One Step ◽  
The Right

We consider an infinite Markov chain with states E0, E1, …, such that E1, E2, … is not closed, and for i ≧ 1 movement to the right is limited by one step. Simple algebraic characterizations are given for persistency of all states, and, if E0 is absorbing, simple expressions are given for the probabilities of staying forever among the transient states. Examples are furnished, and simple necessary conditions and sufficient conditions for the above characterizations are given.

scholarly journals Better Batteries Through Electrochemistry

2014 ◽  
Vol 136 (06) ◽  
pp. S15-S21 ◽  
Author(s):  
Scott J. Moura ◽  
Hector E. Perez
Keyword(s):  
Lithium Ion ◽  
Power Grids ◽  
Ion Concentration ◽  
Particle Model ◽  
Advanced Control ◽  
Systems And Control ◽  
Control Community ◽  
Control Research ◽  
Reducing Costs ◽  
And Control

This article introduces key concepts in Electrochemical-based Control (ECC) systems for batteries, and highlights the fundamentals of battery electrochemistry, state-of-charge/state-of-health (SOC/SOH) estimation, and constrained control. Research on battery SOC/SOH estimation has experienced considerable growth, and can be categorized under equivalent circuit models (ECM) or EChem model-based algorithms. EChem models capture the spatiotemporal dynamics of lithium-ion concentration, electric potential, and intercalation kinetics. The most fundamental reduced EChem model is the single-particle model (SPM). The SPM idealizes each electrode as a single aggregate spherical particle. Advanced control systems that optimize battery performance and longevity are a key enabler for reducing costs and catalyzing deeper penetration into transportation fleets and electric power grids. The dynamic systems and control community are uniquely positioned to play a significant role, as batteries provide a rich opportunity for advancements in fundamental control science and emerging energy application areas.

Distributed event-triggered consensus protocols for discrete-time multiagent systems

2021 ◽  
Author(s):  
Bilal J Karaki ◽  
Magdi S Mahmoud
Keyword(s):  
Multiagent Systems ◽  
Discrete Time ◽  
Sufficient Conditions ◽  
Control Law ◽  
Theory Approach ◽  
Consensus Protocol ◽  
Leader Following ◽  
And Control ◽  
Time Linear ◽  
Event Triggered

Abstract This paper focuses on leader-following and leaderless consensus problems of discrete-time multiagent systems. A distributed observer-based consensus protocol is proposed to investigate the consensus problem for multiagent systems of general discrete-time linear dynamics. By means of the observer, the distributed control law of each agent is designed using local information to guarantee consensus, and the corresponding sufficient conditions are obtained by exploiting graph and control theory approach. A modified distributed event-triggered consensus protocol is designed to reduce communication congestion. Detailed analysis of the leaderless and the leader-following consensus is presented for both observer-based and full-information protocols. Finally, two simulation examples are provided to demonstrate the effectiveness and capabilities of the established theories.

scholarly journals Optimal power flow: an introduction to predictive, distributed and stochastic control challenges

2018 ◽  
Vol 66 (7) ◽  
pp. 573-589 ◽  
Author(s):  
Timm Faulwasser ◽  
Alexander Engelmann ◽  
Tillmann Mühlpfordt ◽  
Veit Hagenmeyer
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Flow Problems ◽  
Optimal Power ◽  
Open Questions ◽  
Multi Stage ◽  
Systems And Control ◽  
Control Community ◽  
And Control

Abstract The Energiewende is a paradigm change that can be witnessed at latest since the political decision to step out of nuclear energy. Moreover, despite common roots in Electrical Engineering, the control community and the power systems community face a lack of common vocabulary. In this context, this paper aims at providing a systems-and-control specific introduction to optimal power flow problems which are pivotal in the operation of energy systems. Based on a concise problem statement, we introduce a common description of optimal power flow variants including multi-stage problems and predictive control, stochastic uncertainties, and issues of distributed optimization. Moreover, we sketch open questions that might be of interest for the systems and control community.

scholarly journals Isolation and characterization of Salmonella paratyphi phage and its lytic spectrum that correlation with pili

2020 ◽  
Author(s):  
Liming Jiang ◽  
Rui Zheng
Keyword(s):  
Tertiary Structure ◽  
Optimal Growth ◽  
High Concentration ◽  
Economic Point ◽  
Isolation And Characterization ◽  
New Perspective ◽  
Bacteria Culture ◽  
And Control ◽  
The Relationship

Abstract Background Prevention and control of Salmonella biofilm have great importance for economic point and medical. Phages and their derivatives are ideal candidates for replacing or compensating of antibiotic problems in the future. Results In this study, the phage KM16 was isolated from slaughterhouse sump samples. It belonged to the Myoviridae family and optimal growth temperature was 42 ℃, the pH of optimal preservation buffer was 6 ~ 7, optimal multiplicity of infection (MOI) was 0.0001 and the genome size was 170,126 bp. The phage KM16 has the ability to lytic most clinical strains of Salmonella paratyphi A and Salmonella paratyphi B. Phylogenetic analysis found that the 16S rRNA, crispr 1 and fimA genes of Salmonella paratyphi have a high similarity and correlation with lytic spectrum of phage KM16, but not correlated with the genes of invA, isrK and luxS. Above all, the lytic spectrum of phage KM16 correlation with tertiary structure of Salmonella pili, the pili of Salmonella was the recognition site for phage adsorption. Collaboration of phage KM16 and antibiotics have better anti-biofilm effect than alone of phage or antibiotics in low concentration of bacteria culture and phage have better anti-biofilm effect than antibiotics in a high concentration of bacteria culture. Conclusions The data of this study provided a new perspective to understand the relationship between phage lytic spectrum and difference of host strains.

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