Zhiqiang Chen

Shanxi Medical University

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Fan Guo

Northwest Institute of Nuclear Technology

Junna Li

Xi'an Jiaotong University

A.Yu. Krasnov

ITMO University

Jixin Qian

State Key Laboratory of Industrial Control Technology

Liao Duzhesheng

ITMO University

Haixia Wang

Shandong University of Science and Technology

Zhijiang Shao

State Key Laboratory of Industrial Control Technology

Zhang Li

Fudan University

Mengfan Li

Hunan University

Wei Jia

Northwest Institute of Nuclear Technology

Cooperative Institutions

Illinois Railway Museum

123

Xi'an Jiaotong University

Chinese Academy of Sciences

Northwest Institute of Nuclear Technology

Zhejiang University

Peking University

University of Chinese Academy of Sciences

State Key Laboratory of Industrial Control Technology

Zhejiang University of Technology

University of Electronic Science and Technology of China

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Event-Triggered confidentiality fusion estimation against eavesdroppers in cyber-physical systems

EURASIP Journal on Advances in Signal Processing (2024)

Daxing Xu Zhiqiang Chen Hailun Wang

Abstract System state plays an important role in cyber-physical systems (CPSs). Ensuring the security of the CPSs is a key issue that can be widely applied. The confidentiality of system state is a fundamental feature of the CPSs security. This paper studies the distributed fusion estimation problem in the presence of eavesdropper, where local sensors send their estimates to a remote fusion center (FC). To prevent eavesdropping, the event triggered scheduling strategy was adopted on each sensor. Some sufficient conditions on the triggers’ threshold were derived to make the eavesdropping expected covariance unbounded while the expected error covariance for the user remains bounded. Moreover, the distributed confidentiality fusion estimation algorithm is provided to achieve perfect expected secrecy. Finally, simulations of different trigger levels for two local systems are employed to show the effectiveness of the proposed methods.

Cyber-physical system

10.1186/s13634-024-01124-4

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Citations (1)

Simulation and optimization of cryogenic air separation units using a homotopy-based backtracking method

Separation and Purification Technology (2009)

Lingyu Zhu Zhiqiang Chen Xi Chen Zhijiang Shao Jixin Qian

Backtracking

Air separation

Separation (statistics)

10.1016/j.seppur.2009.03.032

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Citations (40)

Influences of electric field on the jitter of ultraviolet-illuminated switch under pulsed voltages

Physics of Plasmas (2014)

Junna Li Weiqing Chen Zhiqiang Chen Junping Tang Wei Jia

In a wide variety of high-power pulsed facilities, megavolt switches play a key role in determining the system performance. In particular, ultraviolet (UV)-illuminated switches have been widely used for their high-voltage, low-jitter characteristics. In this paper, two factors that may affect the breakdown jitter of a 3 MV UV-illuminated switch under pulsed voltages were investigated, namely, the electric field enhancement factor of a UV-illuminating gap (UV gap) and the number of UV gaps. The experimental results show that the electric field enhancement factor is important for adjusting the average E/p of the main switch gap when the UV gaps breaks down under certain N2 pressures. When the electric field enhancement factor of the UV gaps is approximately that of the main switch gap, the breakdown jitter percentage goes down to less than 1.9%. Comparatively, the number of UV gaps affects breakdown voltage and jitter in a limited-way. When only one UV gap is functioning and the electric field enhancement factor of UV gap is approximately that of the main switch gap, the breakdown jitter is less than 1.3%.

Ultraviolet

Rise time

10.1063/1.4869334

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Citations (14)

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2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (2014)

Adamonis Juozas Adamus Zbigniew Andrea Péter Adomavièius Ramûnas Agafonov Vladislav

10.1109/irmmw-thz.2014.6955982

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Anaerobic Granular Sludge Poisoning: Judgement and Solution

China Pulp & Paper (2006)

Zhiqiang Chen

The paper mainly introduces the primary judgement of anaerobic granular sludge poisoning and the solution to resume the anaerobic granular sludge activity in the treatment of pulping and papermaking wastewater by using anaerobic process.

Papermaking

Judgement

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Strengthen pollution prevention of mercury and realize vinyl chloride production

Zhiqiang Chen

The mercury flow direction,mercury loss check and control measures for mercury reduction in the production of vinyl chloride by calcium carbide acetylene process with mercuric chloride as catalyst was introduced.

Mercury

Mercury pollution

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A calculation model for breakdown time delay and jitter of gas switches under hundred-nanosecond pulses and its application in a self-triggered pre-ionized switch

Plasma Science and Technology (2021)

Tianchi Wang Haiyang Wang Chen Wei Yingchao Du Linshen Xie

Nanosecond

Switching time

10.1088/2058-6272/ac2358

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Citations (4)

Dynamic surface control for omnidirectional mobile robot with full state constrains and input saturation

Scientific and technical journal of information technologies mechanics and optics (2023)

Zhiqiang Chen A.Yu. Krasnov Liao Duzhesheng Yang Qiusheng

In this paper, we study the trajectory tracking problem of a three-wheeled omnidirectional mobile robot with full state constraints and actuator saturation. Firstly, we analyze a three-wheeled omnidirectional mobile robot and give control model with actuator saturation. By using tan-type Barrier Lyapunov Function and backstepping method, kinematic and dynamic controllers are built, which can ensure that the system full states will not violate the given constraints when the robot is performing trajectory tracking. Then, considering the differential explosion problem which occurs when solving the derivatives of the virtual control law, we use a second-order differential sliding mode surface to calculate it, so as to reduce the complexity of the operation. In addition, due to the output saturation problem of the robot drive motor, an auxiliary compensation system is adopted to compensate for the error generated by the saturation function. Finally, an experimental simulation is performed in MATLAB and the simulation results illustrate the effectiveness of the control algorithm proposed in this paper.

10.17586/2226-1494-2023-23-6-1096-1105

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Citations (1)

Analysis and realization of calibration algorithm of the inconsistent of detector array

Hedianzixue yu tance jishu (2002)

Zhao Ziran Zhiqiang Chen Zhang Li

In order to get high quality image , we must consider the inconsistent of detectors in large container inspect system (LCIS). This paper give the model of the detector's output and the accurate calibrate algorithm. Through we need a fast and realizable method in engineering practice, the model has been simplified. At last we developed a algorithm that can that be used for real time image pre-procession.

Realization (probability)

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Optimal load distribution model of microgrid in the smart grid environment

Renewable and Sustainable Energy Reviews (2014)

Kaile Zhou Shanlin Yang Zhiqiang Chen Shuai Ding

Microgrid

Load distribution

10.1016/j.rser.2014.04.028

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Citations (87)