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Fixed-time supper twisting disturbance observer and sliding mode control for a secure communication of fractional-order chaotic systems

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JVC/Journal of Vibration and control 2024年第11-12期30卷 2568-2581页

作者： Nguyen, Quang Dich Vu, Dinh Dat Huang, Shyh-Chour Giap, Van Nam Institute for Control Engineering and Automation Hanoi University of Science and Technology Hai Ba Trung Hanoi100000 Viet Nam School of Electrical and Electronic Engineering Hanoi University of Science and Technology Hai Ba Trung Hanoi100000 Viet Nam Department of Mechanical Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan

This paper proposed a new disturbance observer (DO) based on the fixed-time supper-twisting algorithm (FTSTA) for rejecting perturbations of secure communication of the fractional-order chaotic systems (FOCSs). First, the FOCSs are remodeled into the Takagi–Sugeno fuzzy (TSF) system with the expectation of softening the calculations of the design of the controller and observer. Second, the synchronization control was designed based on the FTSTA sliding mode control (SMC). Third, a new DO for the secure communication system (SCS) of FOCSs was proposed to estimate the disturbance on public channels and uncertainty variations. Fourth, the stability of the proposed synchronization control was obtained by using the Lyapunov condition. Finally, to verify the correction of the proposed method, the MATLAB simulation with the use of FONCOM toolbox was used to meet the desired expectations of theoretically proposed method. There are, small reaching times, small steady-states, and most tested disturbances and parameters’ variations were compensated by the proposed DO. © The Author(s) 2023.

关键词： Secure communication

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Adaptive control Scheme for Carrier-Based UAVs with Actuator Failure 3rd

Adaptive Control Scheme for Carrier-Based UAVs with Actuat...

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3rd International Conference on Autonomous Unmanned Systems, ICAUS 2023

作者： Xue, Yixuan Zou, Yuchun Chen, Yikun Zhen, Ziyang State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and Astronautics Nanjing China College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China

ISBN: (纸本)9789819710904

Considering the carrier landing task for a canard UAV, an adaptive control scheme is presented based on multivariable model reference adaptive control (MRAC) method. The UAV will suffer from external and internal disturbances during the landing process. The external disturbance includes the airwake and deck motion, while the internal disturbance denotes its own actuator failure. Simulation demonstrates that the proposed structure can improve tracking accuracy, rapidity, and robustness of glide path and attitude. © Beijing HIWING Scientific and Technological Information Institute 2024.

关键词： Model reference adaptive control

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Electric Field Simulation and Optimization of a Conical Current Transformer 18th

Electric Field Simulation and Optimization of a Conical Curr...

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18th Annual Conference of China Electrotechnical Society, ACCES 2023

作者： Yin, Xuzhen Zeng, Jianbin Zeng, Jin Yang, Yang School of Electrical Engineering and Automation Xiamen University of Technology Xiamen361024 China Xiamen Key Laboratory of Frontier Electric Power Equipment and Intelligent Control Xiamen361024 China

ISBN: (纸本)9789819710676

Cast-resin type current transformers are widely used in power systems due to their good insulation, light weight and high reliability. Compared with the oil-immersed current transformer, the external electric field strength of the cast-resin current transformer is more complex and unevenly distributed. To improve this problem, this paper takes a kind of conical casting type current transformer as the object. Firstly, a geometrical model is established to simulate and analyze its external electric field distribution, then an improvement scheme is proposed, and finally the improvement scheme is optimized. The results of this study can provide a reference for the design of the transformer and the optimization of the local discharge. © Beijing Paike Culture Commu. Co., Ltd. 2024.

关键词： Partial discharges

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M-segclip: Enhancing SegCLIP with RM-MLP for Open-Vocabulary Semantic Segmentation 2

M-segclip: Enhancing SegCLIP with RM-MLP for Open-Vocabulary...

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2nd International Conference on Algorithm, Image Processing and Machine Vision, AIPMV 2024

作者： Zhang, Yuhang Che, Yanqiu Li, Shanshan Wang, Ruofan School of Automation and Electrical Engineering Tianjin University of Technology and Education Tianjin Key Laboratory of Information Sensing & Intelligent Control Tianjin China School of Information Technology Engineering Tianjin University of Technology and Education Tianjin China

ISBN: (纸本)9798350390254

With the emergence of large-scale visual language models represented by CLIP, we have broken the great divide between vision and language. It has become possible to project features from visual models to semantic space consisting of a large amount of text. At the same time, semantic segmentation has opened the door to transferring learned visual knowledge to open vocabulary semantic segmentation. In this paper we improve and optimize a model with open vocabulary segmentation capability based on the CLIP architecture, we design an RM-MLP module and insert this module after the semantic group module in the image encoder, which is used to optimize the semantic regions aggregated by the semantic group module, and then used to generate the final segmentation results. The final experimental results show that the optimized model achieves higher segmentation accuracy on PASCAL VOC 2012 (+1.14% mIoU), and COCO (+0.43% mIoU). © 2024 IEEE.

关键词： Semantic Segmentation

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Event-triggered Adaptive control of Switched Nonlinear Cyber-physical Systems

Event-triggered Adaptive Control of Switched Nonlinear Cyber...

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2024 China automation Congress, CAC 2024

作者： Yuan, Manman Qian, Wei School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo454003 China Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment Jiaozuo454003 China

ISBN: (纸本)9798350368604

The event-triggered control problem of switched nonlinear cyber-physical systems (CPSs) is investigated under average dwell time (ADT). A new dynamic gain is proposed, which can effectively compensate for the unknown growth rate and measurement sensitivity. Then, a switched observer integrated with a novel dynamic gain is designed and an event-triggered output feedback controller is developed, which can effectively mitigate the communication burden. Finally, it is proved that all the closed-loop signals are bounded and all system states converge to the origin. Accordingly, the effectiveness of the presented scheme is verified through the simulation of switched RLC circuit system. © 2024 IEEE.

关键词： Adaptive control systems

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A Unified Planning Model for Microgrids Considering Typical Scenarios and Operational Simulations 3

A Unified Planning Model for Microgrids Considering Typical ...

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3rd Asia Power and Electrical Technology Conference, APET 2024

作者： Su, Mengmeng Peng, Jun Zhang, Yong Li, Min Li, Zhenwei Ban, Mingfei North China Branch of State GRID Corporation of China Beijing China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China College of Computer and Control Engineering Northeast Forestry University Harbin China

ISBN: (纸本)9798350367690

The structure of microgrids and the models considered have a significant impact on the planning and operational outcomes of micro grids. Additionally, micro grids encompass various models of primary equipment, including wind, solar, diesel, and storage, while the demand-side response mechanisms are continually being refined. This necessitates the construction of diverse load types, thereby increasing the complexity of micro grid planning and highlighting the need for further research into microgrid planning models. This paper presents various typical mathematical models for microgrids, employs spectral clustering algorithms to obtain representative scenarios, and constructs a unified planning model for microgrids. Furthermore, it elucidates the model adjustment methods under different planning objectives and conducts case analyses of microgrid planning issues. © 2024 IEEE.

关键词： Microgrids

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Alarm Prediction with Variational Output Dimension for Alarm Floods Using Transformer 43

Alarm Prediction with Variational Output Dimension for Alarm...

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43rd Chinese control Conference, CCC 2024

作者： Pang, Long Jiang, Wenbin Hu, Wenkai Wang, Zhuang Cao, Weihua China University of Geosciences School of Automation Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China Ministry of Education Engineering Research Center of Intelligent Technology for Geo-Exploration Wuhan430074 China

ISBN: (纸本)9789887581581

Industrial alarm systems play crucial roles in assessing the production status and ensuring process safety. However, the presence of alarm floods can make alarm systems partially or fully fail, and thus would cause serious consequences. Alarm prediction, as an advanced approach to address alarm floods, offers operators decision supports when an alarm flood occurs. Existing alarm prediction methods requires that the output alarm sequences are of a fixed dimension, making such methods unable to adapt to the changing alarm rate. Accordingly, this paper proposes an alarm prediction model based on Transformer. The proposed model can predict alarm sequences with variational dimensions and can also achieve remarkable accuracy. The effectiveness of the proposed method is demonstrated by a case study with data from the Vinyl Acetate Monomer (VAM) simulation model. © 2024 Technical Committee on control Theory, Chinese Association of automation.

关键词： Polyvinyl acetates

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Design and Development of Smart Cervical Support System 7

Design and Development of Smart Cervical Support System

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7th IEEE Pune Section International Conference, PuneCon 2024

作者： Sahu, Bhanupriya A. Yadav, Akanksha S. Gade, Mansi V. Hanwate, Sandeep D. Lakhekar, Girish V. Pawar, Satish A. G H Raisoni College of Engg & Mgmt Dept. of Electronics and Tele-Communication Engineering Pune India Pune Dept. of Instru & Control Engineering Pune India Akhuratha Sonics & Automation Pune India

ISBN: (纸本)9798331527822

In the last few decades, it has been observed that accidental patients are getting more severe injuries while handling the injured person due to spinal/neck injuries or not enough emergency support at the spot. Thus, we designed a portable device to support the human cranial and neural system in the neck region, which includes the top vertebral bones and major nerves. To avoid damaging the major nerve, emergency support staff must handle the unconscious individual with extreme caution after they have been hurt. If it is injured, the individual may experience compression, laceration, or contusion of the spinal cord, which may result in a coma, paralysis, or long-term repercussions on the neurological system. This article provides the solutions and discusses the challenges of implementing the GPS-based emergency cervical support system that is capable of activating an airbag in life-threatening circumstances. The system is developed with the help of various sensors and a digital controller. Explaining the design steps and the assembly arrangement will help the neck area be restrained and keep it as straight as possible. Hence, that saves the injured person from menacing injuries. © 2024 IEEE.

关键词： Neurons

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Integrated Attitude-Orbit control for Spacecraft Proximity Operations Based on Dual Quaternion 41

Integrated Attitude-Orbit Control for Spacecraft Proximity O...

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第41届中国控制会议

作者： Qian Sun Yingmin Jia The Seventh Research Division and the Center for Information and Control School of Automation Science and Electrical EngineeringBeihang University (BUAA)

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

This paper studies the tracking control problem of integrated attitude-orbit motion for spacecraft proximity ***,the model of the relative integrated attitude-orbit motion between a chaser and a target spacecraft is established in terms of dual quaternion *** adaptive terminal sliding mode control algorithm is developed to accomplish simultaneous position and attitude tracking control considering external disturbances,uncertainties of mass parameters and unknown actuator *** practical finite-time stability of the closed-loop integrated attitude-orbit control system is realized via the presented ***,numerical simulation is proposed to indicate the validity of the designed control algorithm.

关键词： Spacecraft Proximity Operations Integrated Attitude-Orbit Motion Dual Quaternion Adaptive control

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Machine Learning Based Anomaly Clustering Study for Bolt Tightening System 5

Machine Learning Based Anomaly Clustering Study for Bolt Tig...

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5th International Conference on Electronic Communication and Artificial Intelligence, ICECAI 2024

作者： Liu, Tiehui Hu, Shan Bing, Zhigang Zhao, Di School of Automation and Electrical-Engineering Tianjin University of Technology and Education Tianjin China Key Laboratory of Information Sensing & Intelligent Control Tianjin China Engineering Teaching Practice Training Center of Tiangong University Tianjin China

ISBN: (纸本)9798350386943

In the context of Industry 4.0, the tightening quality of bolts is still critical to product performance and safety. In order to improve the abnormal data identification and classification ability of bolt tightening system, this paper adopts principal component analysis to reduce the dimension and adds residual network structure on the basis of deep self-encoder to improve the feature expression. The k-means++ algorithm is used to optimize the initialization of the clustering center, which in turn improves the k-means clustering algorithm. The experimental results show that the improved algorithm achieves significant improvement in contour coefficient and David Bunting index, which effectively improves the automatic identification accuracy of bolt tightening state. © 2024 IEEE.

关键词： K-means clustering

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