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Event-Triggered Algorithms for Leader–Follower Consensus of Networked Euler–Lagrange Agents
- Source :
- IEEE Transactions on Systems, Man, and Cybernetics: Systems. 49:1435-1447
- Publication Year :
- 2019
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2019.
-
Abstract
- This paper proposes three different distributed event-triggered control algorithms to achieve leader–follower consensus for a network of Euler–Lagrange agents. We first propose two model-independent algorithms for a subclass of Euler–Lagrange agents without the vector of gravitational potential forces. By model-independent, we mean that each agent can execute its algorithm with no knowledge of the agent self-dynamics. A variable-gain algorithm is employed when the sensing graph is undirected; algorithm parameters are selected in a fully distributed manner with much greater flexibility compared to all previous work studying event-triggered consensus problems. When the sensing graph is directed, a constant-gain algorithm is employed. The control gains must be centrally designed to exceed several lower bounding inequalities, which require limited knowledge of bounds on the matrices describing the agent dynamics, bounds on network topology information, and bounds on the initial conditions. When the Euler–Lagrange agents have dynamics that include the vector of gravitational potential forces, an adaptive algorithm is proposed. This requires more information about the agent dynamics but allows for the estimation of uncertain parameters associated with the agent self-dynamics. For each algorithm, a trigger function is proposed to govern the event update times. The controller is only updated at each event, which ensures that the control input is piecewise constant and thus saves energy resources. We analyze each controller and trigger function to exclude Zeno behavior.
- Subjects :
- 0209 industrial biotechnology
Adaptive algorithm
Computer science
Multi-agent system
020208 electrical & electronic engineering
02 engineering and technology
Function (mathematics)
Network topology
Graph
Computer Science Applications
Human-Computer Interaction
020901 industrial engineering & automation
Control and Systems Engineering
Control theory
0202 electrical engineering, electronic engineering, information engineering
Piecewise
Graph (abstract data type)
Algorithm design
Electrical and Electronic Engineering
Algorithm
Software
Subjects
Details
- ISSN :
- 21682232 and 21682216
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Systems, Man, and Cybernetics: Systems
- Accession number :
- edsair.doi...........ca6c1ab8bafffb1847f6705811f13435