A major unsolved problem in human-like agent is the construction and application of realistic human facial expression models. Human-like agents should interact with human by recognizing human facial expression and syn...
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In many cases, the topology of communcation systems can be abstracted and represented as graph. Graph theories and algorithms are useful in these situations. In this paper, we introduced an algorithm to enumerate all ...
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In the paper, the existing colony algorithm is improved for the routing computation of satellite networks with rapidly-changed network topology. A virtual topology strategy with new grouping is first proposed to deal ...
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ISBN:
(纸本)7302139229
In the paper, the existing colony algorithm is improved for the routing computation of satellite networks with rapidly-changed network topology. A virtual topology strategy with new grouping is first proposed to deal with the problem of the rapidly-changed network topology, and then the improved ant colony algorithm is applied in routing optimization of satellite networks. Finally, the good performance of the improved algorithm is illustrated by simulations.
The concern about national security has increased significantly since the 9/11 attacks. However, information overload and lack of advanced, automated techniques hinders the effective analysis of criminal and terrorist...
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Reading news is one of the most popular activities when people surf the internet. As too many news sources provide independent news information und each has its own preference, detecting unbiased important news might ...
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A robust adaptive control scheme is presented for a class of uncertain continuous-time multi-input multi-output (MIMO) nonlinear systems. Within these schemes, multiple multi-layer neural networks are employed to appr...
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Star sensors are widely used in aerospace and astronautics due to their high precise attitude measurements. The main difficulty when estimate a fully autonomous attitude is identifying the stars in the sensor field. T...
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ISBN:
(纸本)0780393953
Star sensors are widely used in aerospace and astronautics due to their high precise attitude measurements. The main difficulty when estimate a fully autonomous attitude is identifying the stars in the sensor field. This paper surveys the development of the past 35 years in the area of autonomous star identification. Some classical algorithms such as polygon algorithm, match group algorithm, grid algorithm, neural network, genetic algorithm, singular value method, and so on are reviewed and described in detail. The performances of each algorithm are compared and the factors related to the problem are analyzed. Finally, some conclusions and suggestions are given for future research.
In this talk, a fuzzy singularly perturbed model is proposed for the modeling, control and filtering of a class of multi-time-scale dynamical systems, such as semiconductor packaging processes, multi-link (joint) flex...
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ISBN:
(纸本)0769525288
In this talk, a fuzzy singularly perturbed model is proposed for the modeling, control and filtering of a class of multi-time-scale dynamical systems, such as semiconductor packaging processes, multi-link (joint) flexible manipulators and large scale flexible space structure. The variant expands the idea from Takagi-Sugeno type fuzzy system that the dynamics of a class of distributed parameter systems can be approximated by softly merging locally linear singularly perturbed model, and an increased partition of fuzzy space will lead to a more precise approximation. As a result, the control problem for multi-time scale dynamical systems can be reduced to that for fuzzy singularly perturbed system so that plentiful of theoretical results are hopefully obtained. Main achievements in this field will be reported, which are carried out in my research group at National lab.of Information Science and technology of Tsinghua University. These researches include fuzzy singularly perturbed model (FSPM), its universal approximation, controller synthesis and filtering for discrete-time and continuous-time multi-time-scale dynamical systems.
A cloud model-based controller which needs no mathematical models of plant is presented in this paper for the trajectory tracking control of a flexible-link manipulator with poorly known dynamics. Based on the singula...
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