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2023 7th International Symposium on Computer Science and Intelligent control, ISCSIC 2023

作者： Han, Jie Ma, Yajie Meng, Xianfeng Lu, Ningyun Nanjing University of Aeronautics and Astronautics College of Automation Engineering Nanjing China AVIC xi'An Flight Automatic Control Research Institute Xi'an China

ISBN: (纸本)9798350342987

Optimal test selection is to reduce test costs and time, as well as improve fault coverage and fault diagnosis rates, which is a significant component of design for testability (DFT). This paper takes into account the uncertainties between faults and tests and proposes a novel method to address the problem. First of all, a novel testability metric is defined, where the test selection with unreliable tests is formulated as a multi-objective optimization one. Subsequently, the E-dominance mechanism is introduced and incorporated with preference weight of decision makers to evaluate the quality of test selection solutions. By combining genetic particle swarm optimization (GPSO) with E-dominance, the solution of the problem is generated and stored in an external archive, which is updated according to dominance rules in each iteration. The experimental results demonstrate that compared with the method based on Pareto mechanism, this method produces fewer solutions and performs well on the target with higher weight. These factors contribute to the ability of decision-makers to efficiently choose solutions that align more closely with their requirements, thus substantiating the efficacy of the proposed approach in addressing the issues of test selection. © 2023 IEEE.

关键词： Design for testability

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Path Planning and Tracking control for Quadrotor Helicopters Based on Artificial Potential Field 42

Path Planning and Tracking Control for Quadrotor Helicopters...

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42nd Chinese control Conference, CCC 2023

作者： Guo, Jianchuan Shi, Hua Zhang, Ziyang School of Control Science and Engineering Tiangong University Tianjin300387 China School of Automation Nanjing University of Science and Technology Nanjing210014 China

ISBN: (纸本)9789887581543

This paper presents a path planning method that satisfies both environmental constraints and dynamics constraints of the quadrotor helicopters. An improved artificial potential field (APF) method is employed in path planning for the quadrotor to get a series of path points that meet environmental constraints. Using the differential flatness property of the system, a smooth reference trajectory connecting these path points satisfying the dynamics characteristics of the quadrotor is obtained. A cascaded control strategy is proposed for autonomous flight control of the quadrotor. The outer loop adopts high-order differential feedback control (HODFC) method, and the inner loop employs proportional-integral-derivative (PID) controller. Numerical simulations and experimental results show that the proposed control strategy has superior tracking performance compared with the cascaded PID controller. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Motion planning

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SAR performance-based fault diagnosis for electrohydraulic control system:A novel FDI framework for closed-loop system

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Chinese Journal of Aeronautics 2022年第10期35卷 381-392页

作者： Yang ZHANG Shaoping WANG Jian SHI Xinyu YANG Jiarui ZHANG Xi WANG School of Energy and Power Engineering Beihang UniversityBeijing 100191China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Institute for Automatic Control and Complex Systems(AKS) University of Duisburg-EssenDuisburg 47057Germany

Model-based fault diagnosis serves as an efficient and powerful technique in addressing fault detection and isolation(FDI)issues for control ***,the standard methods and their modifications still encounter some difficulties in algorithm design and application for complex higher-order *** avoid these difficulties,a novel fault diagnosis framework based on multiple performance indicators of closed-loop control system is *** this framework,a socalled performance residual vector is constructed to measure the differences between the real system and the nominal model in terms of system stability,accuracy,and rapidity(SAR)*** criteria for quantification,normalization of the SAR residuals and the explicit mappings between the thresholds and the required performance are *** can be easily achieved simultaneously by monitoring the normalized residual vector length and direction in the SAR performance residual space.A case study on electro-hydraulic servo control system of turbofan engine is adopted to demonstrate the effectiveness of the proposed method.

关键词： Electro-hydraulic servo valve(EHSV) Fault diagnosis Fuel metering unit Performance degradation Performance residual Stability,accuracy,and rapidity(SAR)

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Multi user computation offloading decision in edge networks 43

Multi user computation offloading decision in edge networks

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43rd Chinese control Conference, CCC 2024

作者： Liu, Chang Yuan, Yan Cao, Weihua Hu, Yabin China University of Geosciences School of Automation Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education Wuhan430074 China

ISBN: (纸本)9789887581581

Computing offload is a key technology in mobile edge computing (MEC). By offloading tasks to the edge servers, it solves the problem that terminal devices in the edge network cannot handle high computing and time sensitive tasks. However, in multi-user scenarios, the resources of edge servers are very limited, and without good offloading decisions, the performance of MEC systems cannot be guaranteed. In this paper, the computation offloading problem of multi-user MEC system is analyzed and modeled and a batch offloading method is proposed. And in response to the shortcomings of the existing algorithms, a neural network combined with genetic algorithm for offloading decision is proposed. Simulation results show that the proposed algorithm performs better than existing algorithms in terms of time complexity and accuracy. © 2024 Technical Committee on control Theory, Chinese Association of automation.

关键词： Computation offloading

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Distributed Power Source Planning Based on Improved Particle Swarm Optimization 3

Distributed Power Source Planning Based on Improved Particle...

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3rd Asia Power and Electrical Technology Conference, APET 2024

作者： Wang, Jiahui Tan, Zhili School of Automation China University of Geosciences Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education Wuhan430074 China

ISBN: (纸本)9798350367690

The multitude of advantages offered by distributed power generation units are recognized as crucial factors in enhancing the security of distribution networks. Ensuring the optimal size and placement of distributed generation (DG) units not only enhances system security but also increases profitability. Haphazard placement of DG units may lead to adverse impacts on the power system, resulting in increased power losses and diminished voltage distribution. Therefore, to ensure the optimal size and placement of DG units, this paper proposes a method to optimize DG scheduling and operation, thereby improving voltage distribution, reducing power losses, and enhancing the overall reliability of the entire grid. To reduce power loss (PL) and improve voltage distribution (VP), an adaptive chaotic particle swarm optimization (ACPSO) algorithm is employed to determine the optimal locations and sizes of DG units. By comparing this algorithm with traditional approaches, its efficacy in enhancing performance can be discerned. © 2024 IEEE.

关键词： Power distribution planning

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Multi-Spill Surface Target Tracking Based on Oil Particle-Random Point Pattern 12

Multi-Spill Surface Target Tracking Based on Oil Particle-Ra...

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12th IEEE International Conference on control, automation and Information Sciences, ICCAIS 2023

作者： Sun, Qiankun Liu, Weifeng Wen, Chenglin Shaanxi University of Science and Technology School of Electrical and Control Engineering Xi'an China Guangdong University of Petrochemical Technology School of Automation Maoming China

ISBN: (纸本)9798350328783

In complex marine environments, it is difficult to obtain important parameters such as the number, location, and shape of oil spill surfaces;multiple oil spill surfaces may overlap and merge, which makes the accurate tracking of multiple oil spill surfaces even more difficult. To address the aforementioned issues, proposed a multi-spill surface target tracking method based on the oil particle-random point pattern. Firstly, the oil spill surface is represented by an oil particle model. Then, a random point pattern algorithm is introduced to cluster the oil spill surface. Finally, the GLMB filtering method is utilized to track the centroid trajectory of the oil spill surface, and its shape and concentration information is recorded at the same time. Simulation experiments show the effectiveness of the proposed algorithm. © 2023 IEEE.

关键词： Oil spills

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Distributed-Observer-Based on Longitudinal Flight control for Hypersonic Vehicle 42

Distributed-Observer-Based on Longitudinal Flight Control fo...

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42nd Chinese control Conference, CCC 2023

作者： Ji, Yuehui Zhao, Yiming Chen, Jiaqi Liu, Junjie Gao, Qiang School of Electrical Engineering and Automation Tianjin University of Technology Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin300384 China

ISBN: (纸本)9789887581543

An output feedback control is investigated to achieve stable tracking of velocity and altitude in hypersonic flight vehicle in the paper. A distributed observer is proposed to estimate the unmeasurable flight path angel and angle of attack through a strongly connected directed network topology. Then, a nonlinear control is addressed on the longitudinal dynamics of a rigid hypersonic flight vehicle (HFV) with partial measurable states and the estimated states. The system dynamic is divided into the altitude subsystem and the velocity subsystem. In the altitude subsystem, the backstepping design is proposed for constructing the controllers utilizing the estimated states. The nonlinear dynamic inversion controller is introduced to accomplish the velocity tracking. Finally, numerical simulations verify the effectiveness of the proposed control scheme in providing favorable tracking performance and exact state estimation ability. © 2023 Technical Committee on control Theory, Chinese Association of automation.

关键词： Hypersonic vehicles

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Terahertz Spectroscopic Characterization and Thickness Evaluation of Internal Delamination Defects in GFRP Composites

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Chinese Journal of Mechanical engineering 2023年第1期36卷 190-210页

作者： Walter Nsengiyumva Shuncong Zhong Manting Luo Bing Wang Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou350108China Institute of Precision Instrument and Intelligent Measurement&Control Fuzhou UniversityFuzhou350108P.R.China School of Mechanical and Electrical Engineering Putian UniversityPutian351100China

The use of terahertz time-domain spectroscopy(THz-TDS)for the nondestructive testing and evaluation(NDT&E)of materials and structural systems has attracted significant attention over the past two decades due to its superior spatial resolution and capabilities of detecting and characterizing defects and structural damage in non-conducting *** this study,the THz-TDS system is used to detect,localize and evaluate hidden multi-delamination defects(i.e.,a three-level multi-delamination system)in multilayered GFRP composite *** obtain accurate results,a wavelet shrinkage de-noising algorithm is used to remove the noise from the measured time-of-flight(TOF)*** thickness and location of each delamination defect in the z-direction(i.e.,through-the-thickness direction)are calculated from the de-noised TOF signals considering the interaction between the pulsed THz waves and the different interfaces in the GFRP composite laminates.A comparison between the actual and the measured thickness values of the delamination defects before and after the wavelet shrinkage denoising process indicates that the latter provides better results with less than 3.712%relative error,while the relative error of the non-de-noised signals reaches 16.388%.Also,the power and absorbance levels of the THz waves at every interface with different refractive indices in the GFRP composite laminates are evaluated based on analytical and experimental *** present study provides an adequate theoretical analysis that could help NDT&E specialists to estimate the maximum thickness of GFRP composite materials and/or structures with different interfaces that can be evaluated by the ***,the accuracy of the obtained results highlights the capabilities of the THz-TDS for the NDT&E of multilayered GFRP composite laminates.

关键词： Glass-fiber-reinforced polymer-matrix(GFRP)composites Terahertz time-domain spectroscopy(THz-TDS) Nondestructive testing and evaluation(NDT&E) Stationary wavelet transform(SWT) Thickness evaluation Delamination defects

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Nonlinear Model Predictive control for Quadrotors Using Simultaneous Optimization Approach 12

Nonlinear Model Predictive Control for Quadrotors Using Simu...

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12th IEEE International Conference on control, automation and Information Sciences, ICCAIS 2023

作者： Dai, Pham Duc Quoc, Dong Vu Hai, Dang Minh Thuyloi University Dept of Control Engineering and Automation Hanoi Viet Nam Thuyloi University Division of Water Supply and Sanitation Hanoi Viet Nam

ISBN: (纸本)9798350328783

The quadrotor has found extensive applications across a spectrum of fields, including environmental research, military operations, transportation, and firefighting. The design of its control system can be approached using various methodologies such as sliding mode control, backstepping, and model predictive control (MPC). The primary objective of the control system is to achieve trajectory tracking while simultaneously avoiding collisions with obstacles. In this paper, a nonlinear model predictive control (NMPC) strategy is adopted for calculating control inputs that guide the quadrotor along a desired trajectory while ensuring obstacle avoidance. The obstacle avoidance constraints that are formulated pose a nonlinear and intricate challenge, rendering the optimization problem complex for the nonlinear program solver to address. To tackle this, linear constraints representing hyperplanes between the quadrotor and obstacles are employed. These hyperplanes dynamically adjust as the quadrotor moves, thereby averting collisions effectively. The application of NMPC to quadrotor control, as demonstrated in this paper, underscores the suitability and practicality of the proposed approach. It successfully showcases the efficacy of NMPC in facilitating quadrotor control while navigating through complex environments. © 2023 IEEE.

关键词： Predictive control systems

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Development of an IoT-based Structural Parameter Monitoring System

Development of an IoT-based Structural Parameter Monitoring ...

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2023 Symposium on Internet of Things, SIoT 2023

作者： Martins, Andressa Corrente Monobi, Felipe Minoru Costa Roberto, Julia Maneses De Lyra, Pedro Henrique Cerento De Souza, Gustavo Fernandes Mauá Institute of Technology Control and Automation Engineering São Caetano do Sul Brazil Maua Institute of Technology Civil Engineering Sao Caetano do Sul Brazil

ISBN: (纸本)9798350329438

The present work is dedicated to exploring the potential of Internet of Things (IoT) technology with the aim of promoting a novel application within the realm of civil engineering. Specifically, the research aims to demonstrate the development of a system enabling continuous real-time monitoring of essential structural parameters. Traditionally, the detection of damages and structural failures relied on periodic visual inspections and manual analyses, leading to reactive responses and delayed diagnoses. In contrast, the proposed IoT-based system offers the capability to collect real-time data, enabling early anomaly detection, prediction of potential failures, and informed decision-making regarding maintenance and repairs. The article elucidates the design and implementation of the system, highlighting the integration of sensors, wireless communication devices, and data analysis and processing algorithms, while also presenting test results that showcase the system's effectiveness in detecting subtle changes in critical structural parameters in a controlled environment. © 2023 IEEE.

关键词： Internet of things

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