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In this paper, it addresses a sort of predictive control with the delay compensation for a kind of nonlinear networked control systems, which have packet dropouts and delays in both sensor-to-controller channel and controller-to-actuator channel. Firstly, an event trigger is designed at the controller side to save the limited resources. Only when the control signals satisfy the event-triggered condition,...
The estimation value of time delay between two leakage signals is the main factor affecting the accuracy of leak location during the pipeline leak location. How to quickly find out the delay time and improve the positioning accuracy are difficulties. In this paper, the basic principle of leak location and LMS adaptive filtering algorithm were analyzed, then for computational complexity and the positioning...
This paper presents an Unscented Kalman filter (UKF) based algorithm for estimating available bandwidth in a space Disruption-Tolerant Network (DTN) link. In the proposed algorithm, an UKF model is proposed for accurately tracking available bandwidth of bundle delivery over a space link. In particular, the proposed UKF will iteratively filter a serial of noised measurements on successive time intervals,...
TCP LoLa is a new delay-based congestion control that supports both, low queuing delay and high network utilization in high speed wide-area networks. This is particularly useful for traffic mixes consisting of bandwidth demanding and delay sensitive flows (e.g., long file transfer and interactive "web 2.0" traffic). TCP LoLa keeps the queuing delay at the bottleneck link low around a fixed...
Finite-time consensus of heterogeneous multi-agent system (MAS) with external disturbances is investigated in this paper. Distributed control algorithm is designed for the agents described by leaderless MAS. It can be shown that the state errors of any two agents reach a region in finite time with external disturbances by using Lyapunov stability analysis and algebraic graph theory. At last, one example...
Average-consensus filter problem is investigated for a mixed-order multi-agent system, which consists of first-order and second-order agents, and the proportional-integral consensus filter algorithms are proposed for the agents with different constant inputs. Based on generalized Nyquist stability criterion, sufficient convergence conditions are obtained for the multiagent system under a fixed, symmetric...
In this paper, we present a new adaptive multiflow routing algorithm to select end-to-end paths in packetswitched networks. This algorithm provides provable optimality guarantees in the following game theoretic sense: The network configuration converges to a configuration arbitrarily close to a pure Nash equilibrium. In this context, a Nash equilibrium is a configuration in which no flow can improve...
Approximate computing introduces a new era of low-power and high-speed circuit designs. Instead of strict accurate computation, relaxed requirements might increase performance and reduce power consumption with a simplified or inaccurate circuit. One of the recent remarkable research efforts is the accuracy-configurable approximate adder designs, which can gracefully operate in both approximate (inaccurate)...
This paper proposes a new method for continuous acoustic adaptive feedback cancelation (AFC) in digital hearing aids. The proposed method employs two adaptive filters working in tandem. The first adaptive filter is excited by the receiver (output) signal of the hearing aid, and uses microphone signal as its desired response. The lattice-predictor based adaptive algorithm is used to updated the coefficients...
This paper proposes a method to design the coupling strengths in a multi-agent system in order to achieve consensus in arbitrary directed networks in the presence of input time-varying delays. A model transformation is carried out to convert the consensus problem into a stability one. Then, based on an appropriate Lyapunov-Krasovskii functional, sufficient conditions for consensus in multi-agent systems...
The ring networks guarantee a high availability level, while limiting cabling costs. However, their performance analysis is still a relevant concern due to cyclic dependencies. In this paper, we handle this challenging issue based on Network Calculus formalism. We propose a new approach, Pay Multiplexing Only at Convergence points (PMOC), to compute accurate delay bounds while integrating the impact...
This paper studies the problem of determining sensor locations in a large sensor network using only relative distance (range) measurement. In this paper, we consider a synchronous communication protocol when 1) the communication delay between sensors is uncertain; 2) successive packet loss is finite. Based on the barycentric coordinate representation, our work generalizes the DILOC algorithm in the...
In this paper, an indirect type iterative learning control (ILC) scheme is proposed for industrial batch processes with input delay, based on using a two-degree-of-freedom control (2DOF) internal model control (IMC) structure. An important merit is that the 2DOF IMC design for robust closed-loop control against process uncertainties and load disturbance is independent of the ILC design specifically...
This paper deals with the fixed-time consensus for multi-agent systems with input delay. First, finite-time stability for single system with input delay is given with the aid of Artstein model reduction method. Then, two finite-time nonlinear consensus protocols are constructed for multi-agent systems with input delay using the Lyapunov functionals. In particular, the settling-time of the second consensus...
The consensus algorithm is proposed to solve the bounded consensus tracking problems of leader-following multi-agent systems under directed networks, where the control input of an agent can only use the information measured at the sampling instants from its neighbors or the virtual leader. Based on the delay decomposition approach, the augmented matrix method and the frequency domain analysis, the...
Because the class of wideband noise is quite realistic in applications and is a good approximation to white noise, this paper focuses on the asymptotic properties of integro-differential systems with wideband noise perturbations. Using perturbed test function methods combined with the martingale averaging techniques, and weak convergence methods, it is shown that when the small parameter tends to...
Aircraft scheduling is an important factor affecting the operating costs of airlines. Dispatching aircraft reasonably can not only maximize the benefits of the aircraft utilization, but also reduce flight delays. In this paper, we first transfer the scheduling model to the postman problem with the network model. Then, a scheduling model that use minimal aircrafts under the giving flight plan is put...
This paper is devoted to frequency estimation of a pure sinusoidal signal. The new parameterization approach based on applying delay operators to a measurable signal is proposed. The result is the first order linear regression model with one parameter, which depends on the signal frequency. The estimation algorithm is basing on standard gradient approach. It is shown that the frequency estimation...
We prove convergence of the projected gradient algorithm with inexact projections when applied to linear inverse problems with constraint sets that are unions of subspaces. Such an algorithm is useful for joint angle and delay estimation in MIMO radar, where classical estimators for angle estimation can be integrated into compressive sensing methods for range estimation.
To address demanding requirements in terms of expected throughput, latency and scalability, 5G networks will offer high capacity to support huge volumes of traffic generated by heterogeneous services. Dense deployment of small cells can provide a valid solution but are prone to high levels of interference especially at the cell-edge. However, to reduce inter-cell interference and improve cell-edge...
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