12,344 research outputs found
Rate-Limited Stabilization for Network Control Systems
In this paper, we extend results from packet-based control theory, and present sufficient conditions on the rate of a packet network to guarantee asymptotic stability of unstable discrete LTI system, with less inputs than states. Two types of network control systems are considered in the absence of communication delays, then for one of the two types, the case of a constant time delay is discussed. Examples and simulations are provided to demonstrate the results
Data Rates Conditions for Network Control System Stabilization
In this paper we present sufficient conditions on the rate of a packet network to guarantee asymptotic stability of unstable discrete LTI system with linear state feedback control. Two types of network control systems are considered in the absence of communication delays. For one type we consider the case where we have invertible B matrix and the case where this does not occurred. Examples and simulations are provided to demonstrate the results
Packetized Predictive Control for Rate-Limited Networks via Sparse Representation
We study a networked control architecture for linear time-invariant plants in
which an unreliable data-rate limited network is placed between the controller
and the plant input. The distinguishing aspect of the situation at hand is that
an unreliable data-rate limited network is placed between controller and the
plant input. To achieve robustness with respect to dropouts, the controller
transmits data packets containing plant input predictions, which minimize a
finite horizon cost function. In our formulation, we design sparse packets for
rate-limited networks, by adopting an an ell-0 optimization, which can be
effectively solved by an orthogonal matching pursuit method. Our formulation
ensures asymptotic stability of the control loop in the presence of bounded
packet dropouts. Simulation results indicate that the proposed controller
provides sparse control packets, thereby giving bit-rate reductions for the
case of memoryless scalar coding schemes when compared to the use of, more
common, quadratic cost functions, as in linear quadratic (LQ) control.Comment: 9 pages, 7 figures. arXiv admin note: text overlap with
arXiv:1307.824
Decentralized Event-Triggered Consensus of Linear Multi-agent Systems under Directed Graphs
An event-triggered control technique for consensus of multi-agent systems
with general linear dynamics is presented. This paper extends previous work to
consider agents that are connected using directed graphs. Additionally, the
approach shown here provides asymptotic consensus with guaranteed positive
inter-event time intervals. This event-triggered control method is also used in
the case where communication delays are present. For the communication delay
case we also show that the agents achieve consensus asymptotically and that,
for every agent, the time intervals between consecutive transmissions is
lower-bounded by a positive constant.Comment: 9 pages, 5 figures, A preliminary version of this manuscript has been
submitted to the 2015 American Control Conferenc
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