We have recently proposed a robustified ratio consensus algorithm which achieves asymptotic convergence to the global average in a distributed fashion in static strongly connected digraphs, despite the possible presen...
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ISBN:
(纸本)9781467360890
We have recently proposed a robustified ratio consensus algorithm which achieves asymptotic convergence to the global average in a distributed fashion in static strongly connected digraphs, despite the possible presence of bounded but otherwise arbitrary delays. In this work, we propose a protocol which reaches asymptotic convergence to the global average in a distributed fashion under possible changes in the underlying interconnection topology (e.g., due to component mobility), as well as time-varying delays that might affect transmissions at different times. More specifically, we extend our previous work to also account for the case where, in addition to arbitrary but bounded delays, we may have time varying communication links. The proposed protocol requires that each component has knowledge of the number of its outgoing links, perhaps with some bounded delay, and that the digraphs formed by the switching communication topologies over a finite time window are jointly strongly connected.
A novel athermal scheme utilizing resonance splitting of a dual-ring structure is *** design and simulation are presented,and a proof of concept structure is optimized to demonstrate an athermal resonator with resonan...
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A novel athermal scheme utilizing resonance splitting of a dual-ring structure is *** design and simulation are presented,and a proof of concept structure is optimized to demonstrate an athermal resonator with resonance wavelength variation lower than 5 pm∕K within 30 K temperature range.
作者：
Qingji GaoZheng chao ZengDandan HuComputer Science and Technology
Robotics InstituteCivil Aviation University of ChinaTianjin 300300China School of navigation guidance and control on aviation institute of automationCivil aviation university of ChinaTianjin300300 China Control Theory and Control EngineeringRobotics InstituteCivil Aviation University of ChinaTianjin 300300China
The 7th IARC (international aerial robot competition) focus on a long-term and real-time tracking of ground moving target for UAV (unmanned aerial vehicle).This paper proposes a tracking method using Camshift algorith...
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ISBN:
(纸本)9781479946983
The 7th IARC (international aerial robot competition) focus on a long-term and real-time tracking of ground moving target for UAV (unmanned aerial vehicle).This paper proposes a tracking method using Camshift algorithm with color and edge features fusion,which will apply a Phash target detection algorithm basing on perceptual hash *** targets are severely obscured or disappear from view,which will lead tracking failure,whereas targets can be detected and obtained again using the *** results demonstrate that this method can provide a long-term and real-time tracking of ground moving target,which processes both robustness and computational efficiency.
Previous research has shown that repetitive processes, a class of 2D systems, can be used to design linear model based iterative learning control laws for convergence and transient performance, with supporting experim...
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Background: Surveillance of health care-associated infections is an essential component of infection prevention programs, but conventional systems are labor intensive and performance dependent. Objective: To develop a...
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Frequency synthesizer plays an important role in frequency hopping communication system. In this paper, we derivate the conditions for a system to become the chaotic based on the phase model of phase-locked synthesize...
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ISBN:
(纸本)9781479944156
Frequency synthesizer plays an important role in frequency hopping communication system. In this paper, we derivate the conditions for a system to become the chaotic based on the phase model of phase-locked synthesizer. We found that the system parameter changing during the frequency switching is able to make the system to be chaotic. Based on the Cao's method [5], we find that the fractal dimension of the transient signals should be equal to or less than 4, which also provides the maximal positive Lyapunov exponent. In addition, the unique double-ring attractor of them is also reproduced through the phase reconstruction, which also implies that the frequency switching will result in a chaotic for Frequency-Hopping Communication system.
Considering the under-actuated characteristic of the carangiform robotic fish whose forward movement and turning are carried out by its single caudal fin, this paper investigates its shortest path planning problem sub...
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Considering the under-actuated characteristic of the carangiform robotic fish whose forward movement and turning are carried out by its single caudal fin, this paper investigates its shortest path planning problem subjected to the terminal constrains. First, a simplified kinematics model is proposed in view of its locomotion characteristic. With this model, the shortest path planning is transformed into the shortest time optimal control problem and the maximum principle is employed to obtain the necessary condition. Furthermore, based on the analysis on the relationship between the length of all feasible paths and the terminal condition, the sufficient and necessary conditions are derived for the shortest path under any terminal constrains. Finally, a program developed with Matlab verifies the effectiveness of the proposed results.
The goal of the project is to design intelligent and robust image-processing and augmented-reality algorithms for driver assistance and enhanced vehicular safety. In particular, the focuses were two-fold: (1) realizin...
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ISBN:
(纸本)9781479944484
The goal of the project is to design intelligent and robust image-processing and augmented-reality algorithms for driver assistance and enhanced vehicular safety. In particular, the focuses were two-fold: (1) realizing the abilities to identify and localize in a vehicle's on-board video the sweeping windshield wipers during raining days and (2) designing and implementing an in-painting technique to remove the image of the windshield wipers and replace it with the corresponding pixels (not blocked by the wipers) from an adjacent video frame.
In this paper, the problem of output feedback control is considered for a class of nonlinear systems with uncertainties, time delays and unknown states. Fuzzy T-S (Takagi-Sugeno) models are used to approximate the non...
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In this paper, the problem of output feedback control is considered for a class of nonlinear systems with uncertainties, time delays and unknown states. Fuzzy T-S (Takagi-Sugeno) models are used to approximate the nonlinear systems, and RBF NNs (Radial Basis Function Neural Networks) as a compensator to eliminate the approximating error and the uncertainties. The controller is designed such that the closed-loop system satisfies the desired H∞ performance. Simulation results demonstrate the effectiveness of the developed control scheme.
In this paper, a novel single hidden layer feedforward neural network, called Constrained Extreme Learning Machine (CELM), is proposed based on Extreme Learning Machine (ELM). In CELM, the connection weights between t...
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In this paper, a novel single hidden layer feedforward neural network, called Constrained Extreme Learning Machine (CELM), is proposed based on Extreme Learning Machine (ELM). In CELM, the connection weights between the input layer and hidden neurons are randomly drawn from a constrained set of difference vectors of between-class samples, rather than an open set of arbitrary vectors. Therefore, the CELM is expected to be more suitable for discriminative tasks, whilst retaining other advantages of ELM. The experimental results are presented to show the high efficiency of the CELM, compared with ELM and some other related learning machines.
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