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Decentralized adaptive fuzzy control of time-delayed interconnected systems with unknown backlash-like hysteresis

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Journal of Systems Engineering and Electronics 2008年第6期19卷 1235-1242页

作者： Shen qikun zhang Tianping Zhou Caiying Coll. of Information Engineering Yangzhou Univ. Yangzhou 225009 P. R. China

The problem of decentralized adaptive fuzzy control for a class of time-delayed interconnected nonlinear systems with unknown backlash-like hystersis is discussed. On the basis of the principle of variable structure control （VSC） and by using the fuzzy systems with linear adjustable parameters that are used to approximate plant unknown functions, a novel decentralized adaptive fuzzy control strategy with a supervisory controller is developed. A general method, which is modeled the backlash-like hysteresis, is proposed and removes the assumption that the boundedness of disturbance, and the slope of the backlash-like hystersis are known constants. Furthermore, the interconnection term is supposed to be pth-order polynomial in time-delayed states. In addition, the plant dynamic uncertainty and modeling errors are adaptively compensated by adjusting the parameters and gains on-line for each subsystems. By theoretical analysis, it is shown that the closed-loop fuzzy control systems are globally stable, with tracking error converging to zero. Simulation results demonstrate the effectiveness of the approach.

关键词： fuzzy control backlash-like hysteresis decentralized control adaptive control

维普期刊数据库

An Authenticated Asymmetric Group Key Agreement for Imbalanced Mobile Networks

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Chinese Journal of Electronics 2014年第4期23卷 827-835页

作者： zhang qikun zhang Quanxin MA Zhongmei TAN Yu'an Institute of Computer and Communication Engineering Zhengzhou University of Light Industry School of Computer Science and Technology Beijing Institute of Technology

A Group key agreement(GKA) protocol enables a group of communicating parties to negotiate a common secret key over an open, untrusted network. The design goal of GKA is to achieve secure group communication, which is an important research issue for mobile communication. The conventional(symmetric) GKA protocol allows a group of members to establish a common secret key for imbalanced mobile networks. However, only the group members can broadcast secret message to the group. To overcome this limitation, this paper proposes an authenticated asymmetric GKA protocol. Instead of a common secret key, each group member negotiates a common group public key and holds a different decryption key. The paper proposed protocol supports the dynamic nodes update of mobile networks, which has forward secrecy and backward secrecy of group key. This protocol is proven secure under the Bilinear Computational Diffie–Hellman problem assumption and the performance analysis shows that the proposed scheme is highly efficient.

关键词： Asymmetric group key agreement Bilinear pairings Dynamic group key update Computational Diffie–Hellman problem

Blockchain-Based Dynamic Group Key Agreement Protocol for Ad Hoc Network

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Chinese Journal of Electronics 2020年第3期29卷 447-454页

作者： zhang qikun WANG Bingli zhang Xiaosong YUAN Junling WANG Ruifang Institute of Computer and Communication Engineering Zhengzhou University of Light Industry Department of Computer Science and Technology Tangshan University

Group key agreement(GKA) is one of the key technologies for ensuring information exchange security among group members. While GKA is widely used in secure multi-party computation, safety of resources sharing, and distributed collaborative computing. It still has some security flaws and limitations. We proposes a Blockchain-based dynamic Group key agreement(BDGKA) protocol. In contrast to prior works, BDGKA differs in several significant ways: 1) anonymous identity authentication-it can prevent privacy leaks; 2)traceability-it can track illegal operating entities; 3) load balancing-it balances computation and communication to each node, avoiding the breakdown of single-point and network bottlenecks. This protocol is proven secure under the hardness assumption of decision bilinear DiffieHellman. The performance analysis shows that it is more efficient than the referred works.

关键词： Dynamic group key agreement Blockchain Anonymous authentication Information exchange

Decentralized model reference adaptive sliding mode control based on fuzzy model

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Journal of Systems Engineering and Electronics 2006年第1期17卷 182-186,192页

作者： Gu Haijun zhang Tianping Shen qikun Dept. of Computer Coll. of Information Engineering Yangzhou Univ. Yangzhou 225009 P. R. China

A new design scheme of decentralized model reference adaptive sliding mode controller for a class of MIMO nonlinear systems with the high-order interconnections is propcsed. The design is based on the universal approximation capability of the Takagi - Seguno （T-S） fuzzy systems. Motivated by the principle of certainty equivalenteontrol, a decentralized adaptive controller is designed to achieve the tracking objective without computafion of the T-S fuzz ymodel. The approach does not require the upper bound of the uncertainty term to be known through some adaptive estimation. By theoretical analysis, the closed-loop fuzzy control system is proven to be globally stable in the sense that all signalsinvolved are bounded, with tracking errors converging to zero. Simulation results demonstrate the effectiveness of the approach.

关键词： decentralized control model reference adaptive control sliding mode control fuzy model global stability.

维普期刊数据库

A Specific-Targeting Asymmetric Group Key Agreement for Cloud Computing

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Chinese Journal of Electronics 2018年第4期27卷 866-872页

作者： TAN Yu'an ZHENG Jiamin zhang qikun zhang Xiaosong LI Yuanzhang zhang Quanxin School of Computer Science and Technology Beijing Institute of Technology Institute of Computer and Communication Engineering Zhengzhou University of Light Industry Department of Computer Science and Technology Tangshan University

When the information is exchanged and transmitted among the group members in mobile cloud environment, the group members may distribute different security domains. The information exchanged among group members may have different secret levels in this environment. When a person has some secret information, he only wants to share these information with some people who have the appropriate level of security permissions, other than all the members in the group. Aiming at these needs,we propose a flexible Asymmetric group key agreement(AGKA) protocol that information exchange and transmission are specific-targeting. The paper adopts bilinear mapping and two-way anonymous authentication technology to hide personal identity authentication information, and uses storage and computing migration technology to reduce the resource consumption of mobile terminal, and also proposes the secret key factor oriented extraction and combinations technology to achieve multi-level three-dimensional complex space security information exchange requirements and meet the lightweight computing. The analysis proves that the protocol has good safety performance and low resource consumption.

关键词： Asymmetric group key agreement(AGKA) Specific-targeting information exchange Key self-certified Mobile cloud

Multi-domain Lightweight Asymmetric Group Key Agreement

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Chinese Journal of Electronics 2018年第5期27卷 1085-1091页

作者： ZHENG Jiamin TAN Yu'an zhang Xiaosong zhang qikun zhang Quanxin zhang Changyou School of Computer Science and Technology Beijing Institute of Technology Department of Computer Science and Technology Tangshan University Institute of Computer and Communication Engineering Zhengzhou University of Light Industry Institute of Software Chinese Academy of Science

The terminals in mobile cloud computing have themselves the special characteristics, such as mobile flexibility, distributed in different domains, resourceconstraint and easily to be captured et al. The terminals in mobile cloud computing participated the collaborative computing, information exchange and sharing secrets may come from different domains, different networks or different clouds. For this complex network environment the paper proposes a Multi-domain lightweight Asymmetric group key agreement(ML-AGKA). It adopts the bilinear mapping and blind key technology to achieve an asymmetric group key agreement protocol among mobile terminals distributed in different domains, proposes a computation and communication migration technologies to ensure that the mobile terminals are lightweight computing and communication consumption. The protocol can also achieve anonymity and authentication. The protocol is proven secure under the Computational Diffe-Hellman(CDH) problem assumption and the performance analysis shows that the proposed protocol is highly efficient.

关键词： Asymmetric group key agreement(AGKA) Lightweight computing Bilinear mapping Multi-domain

Cross-cluster asymmetric group key agreement for wireless sensor networks

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Science China(Information Sciences) 2018年第4期61卷 226-228页

作者： Jiamin ZHENG Yu'an TAN qikun zhang Xiaosong zhang Liehuang ZHU Quanxin zhang School of Computer Science and Technology Beijing Institute of Technology Institute of Computer and Communication Engineering Zhengzhou University of Light Industry Department of Computer Science and Technology Tangshan University

Wireless sensor networks have some obvious negative characteristics,such as limited communication range,energy constraints,and vulnerability.A group key agreement in this environment requires lightweight cross-cluster... 详细信息

关键词： Cross-cluster asymmetric group key agreement for wireless sensor networks

A Self-certified Cross-Cluster Asymmetric Group Key Agreement for Wireless Sensor Networks

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Chinese Journal of Electronics 2019年第2期28卷 280-287页

作者： zhang qikun LI Yongjiao zhang Quanxin YUAN Junling WANG Ruifang GAN Yong TAN Yu'an Institute of Computer and Communication Engineering Zhengzhou University of Light Industry School of Computer Science and Technology Beijing Institute of Technology

Wireless sensor networks have some obvious characteristics, such as communication range is limited, computing power is limited and energy is limited. Group key agreement in this environment requires a cross-cluster, computation and communication overhead are lightweight and highly safe group key agreement protocol. Aiming at these demands, the paper proposes a Self-certified cross-cluster Asymmetric group key agreement(SC-AGKA). To establish a lightweight and efficient group communication channel among sensor nodes. According to the cluster head as the bridge node to realize the sensor nodes in different cluster have the same group key information, and negotiate a pair of asymmetric group keys to realize the cross cluster secure communication. The group communication adopts asymmetric encryption mechanism. It realizes the group security communication mechanism of message sender unconstraint. The asymmetric group key agreement has the key self-certified, which does not need additional rounds to verify the correctness of group key. Proven and analysis show that the proposed protocol has the advantages of in security and energy consumption.

关键词： Wireless sensor networks Asymmetric group key agreement Authenticated protocol Key self-confirmation

Preparation of a magnetically recoverable nanocatalyst via cobalt-doped Fe3O4 nanoparticles and its application in the hydrogenation of nitroarenes

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Nano Research 2016年第7期9卷 1879-1890页

作者： Bing Yang qikun zhang Xiaoye Ma Junqing Kang Jingmin Shi Bo Tang College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Eunctionalized Probes for Chemical Imaging Key Laboratory of Molecular and Nano Probes Ministry of Education Shandong Normal University Jinan 250014 Chino

In this paper, we describe the facile and effective preparation of a series of cobalt-doped Fe3O4 nanocatalysts via chemical coprecipitation in an aqueous solution. The catalyst allowed the hydrogenation of chloronitrobenzenes to chloroanilines （CAs） to proceed at low temperatures in absolute water and at atmospheric pressure, resulting in approximately 100% yield and selectivity. Several factors that influence the yield of CAs were investigated. The results showed that the suitable dosage of the catalyst was -10 tool.% of the substrate, and the optimal reaction time, reaction temperature, and reaction pressure were 20 min, 80 ~C, and atmospheric pressure, respectively. Under the optimal reaction conditions, the CA yield was as high as 98.4%, and the nitro reduction rate reached 100%, which indicates the excellent selectivity of the homemade catalyst. This process also overcomes the environmental pollution harms associated with the traditional process.

关键词： catalysis doping hydrogenation nanoparticles spinel phases