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2013教育技术与信息系统国际会议

作者： Fu Wei Pengguang Tang Li Qian Xie Hao Fang Jian Chongqing Internet of Things Engineering Technology Research Center Key Lab of Network Control Tech.&Ins. Chongqing University of P&T

In this paper, for reflection and exploration of students' science education, as well as the status of students' science education and the significance. Exploring the science education should change their concepts. And innovative talent training mode. And strengthen practice teaching and strengthen the teaching staff. In order to develop high-quality talent to meet the needs of social development, we should grasp the to focus on innovation and practical ability students quality training.

关键词： science education change innovative

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Nonlinear Active Disturbance Rejection control for Vehicle Active Suspension System

Nonlinear Active Disturbance Rejection Control for Vehicle A...

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Electronic Information engineering and Computer Science (EIECS), 2021 International Conference on

作者： Xianglian Dai Chunzhe Zhao Rong Xu School of Electronics and Information Engineering Chongqing Three Gorges University Wanzhou China Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Key Laboratory of Intelligent Information Processing and Control of Chongqing Municipal Institutions of Higher Education Chongqing Three Gorges University Wanzhou China

Nonlinear active disturbance rejection control (ADRC) is designed for the suspension system of the quarter vehicle model with the two-degree freedom. It is compared with other active suspension systems based on PID and linear ADRC scheme. The variance of the errors reveals that the nonlinear ADRC suspension system promotes the vehicle acceleration, the suspension dynamic disturbance, and wheel dynamic load.

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controller design and sensitivity analysis for active disturbance rejection control

Boletin Tecnico/Technical Bulletin

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Boletin Tecnico/Technical Bulletin 2017年第19期55卷 505-513页

作者： Zhao, Chunzhe Xu, Rong Xiong, Jiang Xiao, Yanxia Key Lab. of Intelligent Info. Proc. and Contr. of Chongqing Munic. Institutions of Higher Education Chongqing Three Gorges University Wanzhou Chongqing404100 China Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Wanzhou Chongqing404100 China

The sensitivity function is discussed for the linear time-invariant SISO minimum-phase system with unknown order and uncertain relative degree, which is under the active disturbance rejection control (ADRC). The design of the ADRC scheme is also discussed. It is proved that ADRC can guarantee the closed-loop stability when the relative degree of the system is bounded. The numerical examples demonstrate that the ADRC scheme can be applied to the different systems without retuning the parameters.

关键词： Sensitivity analysis

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The Design of the Auxiliary Power Module for Magnetically Compressed Plasma Fusion 6

The Design of the Auxiliary Power Module for Magnetically Co...

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6th International Conference on Electronics technology, ICET 2023

作者： Weng, Zhiyuan Lu, Huacai Fang, Jie Weng, Zhigang West Anhui University School of Electrical and Optoelectronic Engineering Lu-an Anhui China Key Laboratory of Electric Drive and Control of Anhui Province Wuhu241000 China Intelligent Equipment and Internet of Things Lu'an Technology Innovation Center Lu-an Anhui China

ISBN: (纸本)9798350337693

In order to improve the operating parameters of plasma in Tokamak, operating at high density, high temperature and high beta, it has proved that the magnetically compressed plasma is one of the effective methods. In this paper, the topology of high frequency and high power auxiliary power supply system supplied by MC coil in EAST vacuum chamber is presented. The power supply system is composed of several power modules in parallel, which is realized by a series resonant full bridge circuit, and is controlled by current closed loop proportional integral control pulse width modulation. In addition, the model of the converter is simulated and analyzed, and the performance and control of the converter are verified by the test prototype. The efficiency of the power supply is effectively improved by the zeroswitching technology. © 2023 IEEE.

关键词： Pulse width modulation

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A Clustering Routing Algorithm for Extending the Lifecycle in WSN

A Clustering Routing Algorithm for Extending the Lifecycle i...

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International Conference on Information Science and control engineering (ICISCE)

作者： Hongbing Li Xiaolong Liu Yang Luo Hua Luo Meng Huang Kunlin Xie Juan Wu Key Laboratory of Intelligent Information Processing and Control of Chongqing Municipal Institutions of Higher Education Chongqing China Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Chongqing China Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-warning in Three Gorges Reservoir Area Chongqing Three Gorges University Chongqing China

In order to extend the life of wireless sensor networks and improve the stability of wireless sensor networks, a cluster head election mechanism based on energy center of gravity and regional segmentation is proposed. The sensor network monitoring area was divided into finite subregions, and the common nodes of each subregion competed for cluster heads in their own regions, which made the distribution of cluster heads in the whole network more uniform. Each sub-region node is selected for the cluster head based on two factors: energy center and communication distance. The cluster head is responsible for receiving the data perceived by ordinary nodes in the region, and the received information is fused and compressed and transmitted to the base station, thus solving the problems of uneven cluster head distribution and unbalanced node energy loss in the clustering algorithm. The simulation results show that compared with the traditional LEACH clustering algorithm and the improved LEACH-M algorithm, the new algorithm can achieve the purpose of balancing the energy loss of each node, effectively reduce the overall energy loss of the sensor network, and thus extend the network life cycle.

关键词： Wireless communication Wireless sensor networks Energy loss Voting Simulation Clustering algorithms Routing

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Analysis and research about the security problem for sensor layer of internet of things

Analysis and research about the security problem for sensor ...

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2013 2nd International Conference on Frontiers of Energy and Environment engineering, ICFEEE 2013

作者： Peng, Zhen-Long Ouyang, Zhong-Hui Huang, You-Lan TSL School of Business and Information Technology of Quanzhou Normal University China High Educational Engineering Research Center of Fujian Pronvince for E-Commerce Intelligent Based on Cloud Computing and Internet of Things Quanzhou China School of Foreign Language Quanzhou Normal University Quanzhou China

ISBN: (纸本)9781138000513

The concept of internet of things is re-interpreted;this paper analyzed the three layers architecture and the whole security situation of IOT, it emphasized causes and types of the security problems of the sensor layer of the IOT. The information security idea of sensor layer are put forward, the e-label management, security architecture, routing control, laws and regulations, node authentication, key management and other aspects are discussed in detail, this paper has some reference significance for the construction of the security system of the internet of things. © 2014 Taylor & Francis Group, London.

关键词： Laws and legislation

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Weighted Non-negative Matrix Factorization for Image Recovery and Representation

Weighted Non-negative Matrix Factorization for Image Recover...

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International Conference on Information Science and technology (ICIST)

作者： Xiangguang Dai Keke Zhang Jiang Xiong Xianxiu Zhang Zhengwen Tu Nian Zhang Chongqing Engineenng Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Wanzhou Chongqing China Department of Electrical and Computer Enginearing University of the District of Columbia Washington D.C. Washington USA

ISBN: (数字)9781728155586

ISBN: (纸本)9781728155593

Non-negative matrix factorization and its variants cannot learn an effective subspace from the dataset corrupted by outliers. In this article, we propose a robust non-negative matrix factorization approach, called weighted non-negative matrix factorization, which can both recover the corrupted data space and learn a more effective subspace from the corrupted data space. In the proposed method, introducing a weighted graph, which uses Boolean values to mark noise points, while a clean data space and subspace can be achieved by the unlabel data points. The proposed problem can be formulated as a nonconvex optimization problem, which can be optimized by the multiplicative update methods. Taking the face data polluted by Salt and Pepper noise as an example, the effectiveness of the proposed method in image recovery and low-dimensional representations learning is verified.

关键词： Iron Three-dimensional displays

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A nonlinear impulsive control system with impulse time windows and un-fixed coefficient of impulsive intensity

A nonlinear impulsive control system with impulse time windo...

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International Conference on Informative and Cybernetics for Computational Social Systems (ICCSS)

作者： Yuming Feng Zitao Wang Xiaoyu Liu Wei Zhang Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Wanzhou Chongqing China School of Computer Science and Engineering Chongqing Three Gorges University Wanzhou Chongqing China Key Laboratory of Intelligent Information Processing and Control Chongqing Three Gorges University Wanzhou Chongqing China School of Three Gorges Artificial Intelligence Chongqing Three Gorges University Wanzhou Chongqing China

ISBN: (数字)9781728158570

ISBN: (纸本)9781728158587

Based on the fact that there always exists error in the impulsive intensity, which leads to the fact that the coefficient is un-fixed, and in the occurrence of the impulses, we propose a new model, which is called nonlinear impulsive control system with impulse time windows and un-fixed coefficient of impulsive intensity. We find sufficient conditions for ensuring its stability by using Lypunov's method. We choose chaotic Lorenz system and Chua's system as numerical examples to show the effectiveness of the results, by employing such method, the systems are controlled.

关键词： Impulsive control system impulse time windows impulsive intensity stability control systems Impulsiveness Pulses Time windows

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A non commutative generalization BL-rings

arXiv

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arXiv 2021年

作者： Tsafack, Surdive Atamewoue Tchinda, Arnaud Fobasso Feng, Yuming Ndjeya, Selestin Key Laboratory of Intelligent Information Processing and Control Chongqing Three Gorges University Wanzhou Chongqing404100 China Department of Mathematics University of Yaounde 1 Cameroon Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Chongqing Three Gorges University Wanzhou Chongqing404100 China Department of Mathematics Higher Teacher Training College University of Yaounde 1 Cameroon

The purpose of this work is to extend the study of the commutative rings whose lattice of ideals can be a structure of BL-algebra as carry out by Heubo et al in 2018, to non commutative rings appointed in the work as pseudo BL-rings. We study and characterize rings whose ideals form a pseudo BL-algebra, we describe them in terms of their subdirectly irreductible factors. We obtain that these are (up to isomorphism) to a subring of a direct sums of unitary special primary rings and discrete valuation *** Codes 03B50, 06D99. © 2021, CC BY.

关键词： Algebra

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Blockchain-Based Homomorphic Transaction Framework for Enhanced Consumer Security and Business Scalability

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IEEE Transactions on Consumer Electronics 2024年

作者： Guo, Tao Shang, Fengjun Dai, Xiangguang Liu, Qilie Chongqing University of Posts and Telecommunications School of Computer Science and Technology Chongqing400065 China Key Laboratory of Big Data Intelligent Computing Chongqing400065 China Chongqing Three Gorges University Key Lab. of Intelligent Info. Proc. and Contr. of Chongqing Munic. Institutions of Higher Education Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology School of Three Gorges Artificial Intelligence Chongqing400044 China Chongqing University of Posts and Telecommunications School of Communications and Information Engineering Chongqing400065 China

Energy trading in distributed microgrids represents an effective means of enhancing the utilization of renewable energy. However, the aggregation of large-scale consumption data may encounter business scalability issues and potential privacy exposure concerns, necessitating the development of novel secure and scalable frameworks for integrating consumption demands between prosumer and microgrid entities. we research focuses on providing a user-friendly transaction model for consumers and microgrid operators. Firstly, a privacy aggregation scheme for user resource requests is designed to ensure the security and decentralization of user data. In addition, the model employs a bidirectional heterogeneous resource allocation mechanism to support the optimal allocation of multiple resources, such as renewable energy, power assets, energy storage devices, and carbon credits, among different microgrids. Finally, a microgrid transaction prototype has been constructed on the Truffle development framework. In this context, smart contracts has been designed to ensure that the transactions are carried out automatically. Experimental results indicate that the scheme provides enhanced security for multi-resource trading in a cluster context relative to existing methodologies. The number of transactions increases linearly with the resource overhead, resulting in more efficient utilization of energy trading. Furthermore, the framework's scalability has been demonstrated through both temporal and spatial considerations. © 1975-2011 IEEE.

关键词： Decentralized finance

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