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Integrated digital circuits are frequency capped by its heavily constrained paths between flip-flop stages. These so-called critical paths are highly susceptible to delay fluctuations leading designers to use guard-banding in order to avoid timing violations. Several effects can cause these variations, whereas aging is of rising importance. Many works have addressed this issue through monitoring of...
The challenges of the Internet of Things (IoT) in an urban environment are driven by smart vehicles which need to be able to efficiently sense and communicate with other nearby vehicles. System-on-chip (SoC) applications in the automotive market have strict circuit performances and reliability requirements for a temperature range of up to 175 0C. This work proposes an analysis of latched-comparators...
This paper addresses the issue of lag consensus of the leader-following multiagent systems with communication delays and switching topologies. Lag consensus means that the states of the followers lag that of the leader. Based on the graph theory and the common Lyapunov-Krasovskii functional method, we design a protocol ensuring the lag consensus of multiagent systems with communication delays under...
This paper is concerned with the consensus problem for general first-order multi-agent systems over undirected topology. Under the assumption that the topology is connected and every agent receives neighbors information with time-varying communication delay, allowable delay bound depending on the agent dynamics, topology structure and the control gain is obtained. In particular, in case of first-order...
In this paper, the consensus problem of second order multi-agent systems with disturbance is studied under heterogenous position and velocity topologies. The cases that the disturbances are generated from linear exosystems and nonlinear exosystems are considered, respectively. Linear disturbance observer and dynamic-gain-based nonlinear disturbance observer using only the velocity information of the...
This paper investigates the leader-following consensus problem of the switched multi-agent systems with general second-order dynamics. In the switched systems, we consider two subsystems, CT (continuous-time) subsystems and DT (discrete-time) subsystems. A linear distributed control algorithm is proposed for leader-following consensus in the multi-agent systems with switched dynamics. Moreover, based...
The ability to continuously detect the interesting subgraph patterns over dynamic graph-structured data in real time is crucial to many applications. Generally, the edges of such subgraphs have temporal relation. In this paper, the stream model is used to describe the dynamic graph, in which the edges are processed in chronological order. In order to reduce the intermediate results, we propose a topological...
This technical note is aimed at studying the joint impacts of the system dynamic structure and the communication topology on the synchronization of multi-linear positive systems. Through rigorous analysis, necessary and sufficient conditions are given to guarantee the coupled systems achieving positive synchronization under the distributed control protocol, and the gain matrix designed is related...
By using the zigzag transformer, the scheme of medium-voltage simultaneous AC and DC distribution network is designed. The topological structure of power router is put forward based on the simultaneous AC and DC distribution network. The feasibility of the simultaneous AC and DC distribution network and power router are verified by using MATLAB/Simulink. Taking line voltage drop and line loss as performance...
This paper reviews the use of UHF double class-E (class-E2) topologies for dc/dc power conversion. After introducing this attractive resonant converter in the context of the time-reversal duality principle, two different lumped-element networks are described for appropriately terminating the drain of the switching devices. Recent implementation examples, taking advantage of GaN HEMT processes, are...
The average consensus problem of multi-agent systems (MASs) with switching directed network and time-varying delays is discussed in this paper, where the switching topologies are kept weakly connected and balanced. Firstly, the n-dimensional MASs model is reduced to (n-l)-dimensional subspace. Then, some sufficient conditions for average consensus are achieved based on reciprocally convex approach...
In recent days biometric features are frequently used in the field of personal identification and authentication. Retinal vessels are important biometric features in this manner. It is suggested a personal identification system used retinal blood vessel topology in this paper. For this purpose, characteristic feature matrix that is extracted by using topological features. The position of these feature...
During the utilization of PHEV, frequently discharge and charge cycles will inevitably lead to the battery aging, which affects the energy management and further affects the vehicular economy. The main purpose of this paper is to investigate the influence of battery aging on energy management economy for PHEV. Four lithium cells under different SoH are used to represent four different aging conditions...
In this paper, we investigate a weakly-supervised object detection framework. Most existing frameworks focus on using static images to learn object detectors. However, these detectors often fail to generalize to videos because of the existing domain shift. Therefore, we investigate learning these detectors directly from boring videos of daily activities. Instead of using bounding boxes, we explore...
Creating road maps is essential for applications such as autonomous driving and city planning. Most approaches in industry focus on leveraging expensive sensors mounted on top of a fleet of cars. This results in very accurate estimates when exploiting a user in the loop. However, these solutions are very expensive and have small coverage. In contrast, in this paper we propose an approach that directly...
Monoculture in a computer network is defined as executing the same protocols and software on all the networking devices. Multiple, correlated failures may be triggered in a monoculture network by attacks that exploit existing vulnerabilities in either protocols, software, or hardware. In this paper, optimal multiculture network design is used to improve the network reliability in the presence of correlated...
In this paper, implementation of a virtual resistance controller for DC-DC boost converter Dahono 1 to improve the damping during transient response is proposed. The virtual resistance is developed by using pole placement and root locus techniques to obtain the desired transient response for the converter. The model that considering component non-idealities then established. In order to verify the...
The modular multi-level converter is an upcoming topology for drive application in the megawatt power range. This paper presents a comprehensive reliability survey for this kind of converter which can be used for its optimal designing. In this survey, converter total failure rate, is calculated for different number of output levels to find the optimal condition in which converter can provide the best...
The modular multilevel converters (MMC) has become an attractive research subject of power electronics due to its special topology. In this paper, a novel sub-module circuit for the MMC is proposed. Compared with the traditional sub-module circuits, the number of power semiconductors used in the proposed circuit is reduced by a quarter. Then, an improved three-phase multilevel topology is also constructed...
A novel sub-module circuit is proposed in this paper based on the controllability theory. At first, traditional full bridge sub-modules (FBSM) of the MMC is modeled as a switched linear system, then controllability of the switched linear system model of the sub-module circuit is studied. It is found that the sub-module circuit is state controllable with only four operation modes adopted in the model...
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