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Prior area searching for energy-based sound source localization

Science China(Information Sciences) 2022年第12期65卷 220-231页

作者： Feng GAO Yeyun CAI Fang DENG Chengpu YU Jie CHEN Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center Guohao Academy Tongji University

Traditional energy-based sound source localization methods have the problems of the large solution space and time-consuming calculation. Accordingly, this paper proposes to use the data collected by each acoustic sensor and their corresponding weights to adaptively initialize the prior area of a target. In this way, the potential existence range of the target is reduced and the location estimate can be determined in a small area. Specifically, we first determine the initial search point based on the current sound data and the set rules. Then, the prior location of the target is iteratively searched according to different sound energy circles' weights. Next, the prior area of the target is determined around the prior location. Finally, the precise location of the target is further traversed to minimize the objective function, which is constructed by the weighted nonlinear least squares location(WNLS) algorithm. A series of indoor experiments are *** results show that our method can effectively improve the positioning accuracy by approximately 13%and greatly reduce the calculation time.

关键词： prior area searching sound source localization adaptively initialization iterative search indoor environment

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intelligent optimized control: overview and prospect

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Zidonghua Xuebao/Acta Automatica Sinica 2013年第11期39卷 1831-1848页

作者： Xin, Bin Chen, Jie Peng, Zhi-Hong School of Automation Beijing Institute of Technology Beijing 100081 China Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing 100081 China

A literature review regarding intelligent optimized control (IOC) is provided along the branches including fuzzy optimized control, neural optimized control, fuzzy-neural optimized control, intelligent optimizers based optimized control and so on. Accordingly, concepts which are closely related to IOC are analyzed in depth. Also, a classification of IOC methods is presented. Finally, several important issues about IOC are discussed and the development of IOC in future is predicted. Copyright © 2013 Acta Automatica Sinica. All rights reserved.

关键词： Software engineering

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Cloud control systems

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自动化学报 2015年第2期2卷 134-142页

作者： Xia Yuanqing the School of Automation Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing 100081

The concept of cloud control systems is discussed in this paper, which is an extension of networked control systems (NCSs). With the development of internet of things (IOT), the technology of NCSs has played a key role in IOT. At the same time, cloud computing is developed rapidly, which provides a perfect platform for big data processing, controller design and performance assessment. The research on cloud control systems will give new contribution to the control theory and applications in the near future.

关键词： Cloud control systems (NCSs) networked control systems cloud computing cyber-physical systems (CPSs) big data

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Research on Social Marketing Strategies with An Agent-based Propagation Model

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IFAC-PapersOnLine 2017年第1期50卷 13581-13586页

作者： Zeng, Shuai Li, Juanjuan Ni, Xiaochun Yuan, Yong Wang, Fei-Yue The State Key Lab of Management Control for Complex Systems Institute of Automation Chinese Academy of Sciences China Qingdao Academy of Intelligent Industries BeijingShandong China Research Center of Military Computational Experiments and Parallel Systems National University of Defense Technology Changsha China

Considering the increasing complexity of social networks and user behaviors, it is very challenging for advertisers to formulate their strategies of selecting proper initial seed users in their social marketing efforts. In this paper, we tackle this challenge by proposing an agent-based propagation model and injecting it into typical social networks with three types of structures, i.e., Erds-Rényi random graph, Watt-Strogatz small world graph, and Barabási-Albert scale-free graph. We instantiate this agent-based model with demographic characteristics extracted from real-world census data collected in China. By investigating the diffusion process of advertising information in these social networks, we can analyze and compare the performance of advertisers’ targeting and influencer strategies. Our experimental results indicate that advertisers adopting influencer strategies should manipulate the initial well-connected seeds to deliver information only to the potential customers instead of a wide range of generic users. © 2017

关键词： Marketing Autonomous agents Behavioral research Commerce Computational methods Population statistics Agent based model Demographic characteristics Information diffusion Potential customers Propagation modeling Seeding strategies Small world graphs Social marketings

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Centralised fusion over unreliable networks

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International Journal of control 2012年第4期85卷 409-418页

作者： Xia, Yuanqing Yan, Liping Fu, Mengyin Zhu, Cui School of Automation Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing 100081 China

This article considers a centralised data fusion system, in which the measurements of the local sensors are time-stamped, and then transmitted through the network to the fusion centre. The system will suffer measurements delay or loss due to the unreliability of the network. Based on the Kalman filter and information filter in a single channel, a centralised data fusion algorithm with buffers is proposed to solve this problem. A probabilistic metric to evaluate the performance of the system is presented. Simulation results show the effectiveness of the proposed method.

关键词： networked data fusion centralised Kalman filter network delay stability

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Image Encryption Algorithm Based on Image Block and Double Diffusion 6

Image Encryption Algorithm Based on Image Block and Double D...

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6th IEEE Information Technology and Mechatronics Engineering Conference, ITOEC 2022

作者： Lv, Tianyi Zheng, Jiming College of Computer Science and Technology Chongqing University of Posts and Telecommunications Chongqing China Key Lab of Intelligent Analysis and Decision Complex Systems Chongqing University of Posts and Telecommunications Chongqing China

ISBN: (纸本)9781665431859

Due to the sensitivity and unpredictability of chaos to the initial value, chaos mapping is widely used in the field of image encryption. In this paper an image encryption algorithm based on image block and double diffusion is presented. The algorithm adopts the structure of permutation-diffusion-block diffusion, which can encrypt the image in only one round, and the security is high. On this basis, a fast diffusion algorithm with row and column simultaneous diffusion is proposed, and a block diffusion algorithm using the previous pixel to influence the current pixel is designed. The SHA-256 algorithm and cipher image are used to update the initial values and parameters of the chaotic system, which enhances the ability of the algorithm to resist the chosen plaintext attack. Experimental results and encryption performance analysis show that the algorithm runs fast and has high security. © 2022 IEEE.

关键词： Chaotic systems

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An Existence Result for the Hénon Equation with Critical Exponent 3

An Existence Result for the Hénon Equation with Critical Ex...

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3rd International Conference on Applied Mathematics, Modelling, and intelligent Computing, CAMMIC 2023

作者： Huili, Yifeng Deng, Zhi-Ying School of Science Chongqing University of Posts and Telecommunications Chongqing400065 China Key Lab of Intelligent Analysis and Decision on Complex Systems Chongqing University of Posts and Telecommunications Chongqing400065 China

In this paper, we study the existence of positive solutions for a Hénon elliptic system with boundary value problems involving the critical exponent. Based upon the variational methods, we prove the existence of ... 详细信息

ISBN: (数字)9781510667617

ISBN: (纸本)9781510667600

关键词： Boundary value problems

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Dynamic collision avoidance for cooperative fixed-wing UAV swarm based on normalized artificial potential field optimization

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Journal of Central South University 2021年第10期28卷 3159-3172页

作者： LIU Wei-heng ZHENG Xin DENG Zhi-hong State Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of TechnologyBeijing 100081China China Aerospace Science and Industrial Corporation Beijing 100048China

Cooperative path planning is an important area in fixed-wing UAV ***,avoiding multiple timevarying obstacles and avoiding local optimum are two challenges for existing approaches in a dynamic ***,a normalized artificial potential field optimization is proposed by reconstructing a novel function with anisotropy in each dimension,which can make the flight speed of a fixed UAV swarm independent of the repulsive/attractive gain coefficient and avoid trapping into local optimization and local ***,taking into account minimum velocity and turning angular velocity of fixed-wing UAV swarm,a strategy of decomposing target vector to avoid moving obstacles and pop-up threats is ***,several simulations are carried out to illustrate superiority and effectiveness.

关键词： fixed-wing UAV swarm cooperative path planning normalized artificial potential field dynamic obstacle avoidance local optimization

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Observer-based fuzzy control for nonlinear fractional-order systems via fuzzy T-S models: The 1 < α < 2 case 19

Observer-based fuzzy control for nonlinear fractional-order ...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Gao, Zhe Liao, Xiaozhong College of Light Industry Liaoning University Shenyang110036 China School of Automation Beijing Institute of Technology Beijing100081 China Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing100081 China

This paper presents observer-based fuzzy control for nonlinear fractional-order systems with the fractional order α satisfying 1 © IFAC.

ISBN: (纸本)9783902823625

This paper presents observer-based fuzzy control for nonlinear fractional-order systems with the fractional order α satisfying 1 © IFAC.

关键词： Numerical methods

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Distributed auction-based coverage motion planning for multiple cooperative robots 8

Distributed auction-based coverage motion planning for multi...

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8th International Symposium on Computational Intelligence and Industrial Applications and 12th China-Japan International Workshop on Information Technology and control Applications, ISCIIA and ITCA 2018

作者： Gao, Guanqiang Xin, Bin School of Automation Beijing Institute of Technology Beijing100081 China Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing100081 China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of Technology Beijing100081 China

The multi-robot coverage motion planning (MCMP) problem refers to a typical task where every point of the target area must be covered by robots at least once. This paper designs a novel efficient offline algorithm to solve the MCMP problem, which is extended from the spiral-spanning tree coverage algorithm. A distributed auction mechanism is designed for the cooperative task allocation in the proposed algorithm. In this mechanism, each robot will be an auctioneer which chooses a suitable cell as an auction item form its neighbor vertexes and determines a winner robot. According to the connectedness and the balance of each robot’s graph, bidders will submit proper biddings to the auctioneer. After the auction processes, acceptable coverage trajectories can be planned rapidly. Computational experiments validate the effectiveness of the proposed MCMP algorithm. Meanwhile, the proposed algorithm is compared with the state-of-the-art algorithm named DARP. The comparative results show that the auction-based MCMP algorithm has apparent advantages in the running time and the makespans for large crowded configuration spaces. © ISCIIA and ITCA 2018 - 8th International Symposium on Computational Intelligence and Industrial Applications and 12th China-Japan International Workshop on Information Technology and control Application.

关键词： Multipurpose robots

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