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13th IEEE Data Driven control and Learning Systems Conference, DDCLS 2024

作者： Wu, Penghao Tao, Hongfeng Tian, Engang Yin, Tangwen Chen, Hongtian Chen, Yiyang School of Mechanical and Electrical Engineering Soochow University Suzhou215137 China Jiangnan University Key Laboratory of Advanced Process Control for Light Industry of Ministry of Education Wuxi214122 China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai200093 China Shanghai Jiao Tong University Department of Automation Shanghai200240 China

ISBN: (纸本)9798350361674

In recent years, the rapid advancement of electric vehicles has heightened concerns regarding the safety of high-energy batteries. Consequently, there has been a significant focus on the development of fault diagnosis technologies for batteries. Intelligent fault diagnosis (IFD), particularly data-driven approaches, represents a crucial methodology in addressing this concern. This paper proposes a data-driven approach, for IFD in high-energy batteries utilized in electric vehicles. The proposed Exponentially Weighted Average Variational Mode Decomposition (EWVMD) method overcomes these limitations by employing the exponential weighted moving average (EWMA) technique to smooth collected time-series voltage data. This process reduces noise, accentuates abnormal change trends, and yields secondary data with enhanced features. Subsequently, variational mode decomposition (VMD) is applied to the secondary data. The resulting decomposed sub-mode curves (intrinsic mode functions - IMFs) and the change trends of the residual curve, in conjunction with a fault threshold tailored to actual working conditions, are utilized to ascertain the occurrence of faults. Design verification experiments, the C42MSA electric vehicle power supply battery undergoes charging and discharging tests with injected faults at fixed intervals. The collected fault signals are then subjected to fault diagnosis using EWVMD. Results demonstrate the algorithm's superior detection effectiveness and increased sensitivity to fault signals compared to traditional methods. © 2024 IEEE.

关键词： Variational mode decomposition

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control Strategy based on Frequency Response for a Single-Phase Full- Bridge Series Active Filter 16

Control Strategy based on Frequency Response for a Single-Ph...

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16th Brazilian Power Electronics Conference, COBEP 2021

作者： Curi Busarello, Tiago Davi Automation and Computing Engineering Federal University of Santa Catarina Department of Control Blumenau Brazil

ISBN: (纸本)9781665421294

Series active filters are a mature technology and well covered in the literature. However, they are usually designed for three-phase systems employing control strategies in dq-rotating reference frame. As a result, proportional-integrator controllers are used. However, they are not suited when the system has abnormal conditions. Moreover, with the high penetration of distribution generators, single-phase distribution voltage is being deteriorated. This paper presents a control strategy based on frequency response for a single-phase full bridge series active filter. The series active filter is controlled in voltage mode through a digital lead-lag controller. The controller parameters are obtained by frequency response technique using the k-factor methodology and later discretized via Backward-Euler approximation. The series active filter is tested in a system with nonlinear loads, distortions at the distribution voltage and under disturbance at the DC-link. The proposal was verified under simulation results and under Hardware-in-Loop Typhoon HIL402 with external microcontroller TMS320F28335. Results showed the effectiveness of the proposed control strategy. © 2021 IEEE.

关键词： Active filters

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无人飞行器在不确定扰动下的动态目标跟踪

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engineering 2024年第4期35卷 74-85页

作者： Yanjie Chen Yangning Wu Limin Lan Hang Zhong Zhiqiang Miao Hui Zhang Yaonan Wang School of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108China Department of Computer Science Aberystwyth UniversityAberystwyth SY233DBUK School of Robotics Hunan UniversityChangsha 410082China College of Electrical and Information Engineering Hunan UniversityChangsha 410082China National Engineering Research Center of Robot Visual Perception and Control Technology Hunan UniversityChangsha 410082China

This study proposes an image-based visual servoing(IBVS)method based on a velocity observer for an unmanned aerial vehicle(UAV)for tracking a dynamic target in Global Positioning System(GPS)-denied *** proposed method derives the simplified and decoupled image dynamics of underactuated UAVs using a constructed virtual camera and then considers the uncertainties caused by the unpredictable rotations and velocities of the dynamic target.A novel image depth model that extends the IBVS method to track a rotating target with arbitrary orientations is *** depth model ensures image feature accuracy and image trajectory smoothness in rotating target *** relative velocities of the UAV and the dynamic target are estimated using the proposed velocity *** to the velocity observer,translational velocity measurements are not required,and the control chatter caused by noise-containing measurements is *** integral-based filter is proposed to compensate for unpredictable environmental disturbances in order to improve the antidisturbance *** stability of the velocity observer and IBVS controller is analyzed using the Lyapunov *** simulations and multistage experiments are conducted to illustrate the tracking stability,anti-disturbance ability,and tracking robustness of the proposed method with a dynamic rotating target.

关键词： Unmanned aerial vehicle Visual servoing Velocity observer Target tracking

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Comparative Analysis of Pharmacokinetic-Pharmacodynamic Models for Propofol and Remifentanil Using Model Predictive control

Comparative Analysis of Pharmacokinetic-Pharmacodynamic Mode...

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European control Conference (ECC)

作者： A. R. Ynineb H. Farbakhsh G. Ben Othman Y. Wahlquist I. R. Birs E. Yumuk C. I. Muresan R. De Keyser D. Copot C. M. Ionescu M. Neckebroek Department of Electromechanics Systems and Metal Engineering Research Group on Dynamical Systems and Control Ghent University Gent Belgium Department of Automatic Control Lund University Lund Department of Automation Technical University of Cluj-Napoca Cluj-Napoca Romania Department of Control and Automation Engineering Istanbul Technical University Maslak Istanbul Turkey Department of Anesthesia Ghent University Hospital Ghent Belgium

ISBN: (数字)9783907144107

ISBN: (纸本)9798331540920

This study aims to compare the effectiveness of different Pharmacokinetic-Pharmacodynamic (PK-PD) models for administering Propofol and Remifentanil, two critical agents in anesthesia. Initially, different PK models were introduced: one for Propofol based on the Schnider model and another for Remifentanil using the Minto model. Alternatively, both drugs were modeled using the Eleveld models. The PK-PD models were integrated into a closed-loop control system using model predictive control (MPC) with disturbances to control the Bispectral index (BIS) and the Richmond Agitation Sedation Scale (RASS). The methodology involved simulating the anesthetic agents in the open-source patient simulator (2 inputs, 2 outputs) with 12 patient datasets in a controlled environment to simulate the patient response variability, allowing for a detailed analysis of the model's performance in maintaining optimal drug concentrations. The primary focus was on the system's ability to adapt to surgical disturbances, a key challenge in anesthesia management, and whether a different modeling of drugs can have an impact on their effects. The results indicated significant differences in the performance of the two models configurations. The Eleveld model for Propofol showed less usage of drugs to maintain the desired BIS value. Concluding that this comparative analysis offers a valuable reference for selecting appropriate modeling approaches in the development of advanced control strategies in anesthesia.

关键词： Drugs Analytical models Adaptation models Surgery Europe Predictive models Anesthesia

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Self-Dual Digital Devices with Calculations Testing by Modified Hamming Code

Self-Dual Digital Devices with Calculations Testing by Modif...

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2023 Seminar on Networks, Circuits and Systems, NCS 2023

作者： Efanov, Dmitrii V. Pogodina, Tatiana S. Peter the Great St. Petersburg Polytechnic University Higher School of Transport Institute of Mechanical Engineering Materials and Transport St. Petersburg Russia Department of "automation Remote Control and Communication on Railway Transport" Moscow Russia

ISBN: (纸本)9798350370386

The authors proposed to implement self-checking devices with built-in control circuits according by two diagnostic parameters-belonging of code words to modified Hamming codes and belonging of check functions to the type of self-dual Boolean functions. The principles of constructing modified Hamming codes are given. Conditions are established under which the check bits of modified Hamming codes will be described by self-dual Boolean functions. It is proved that for each value of the number of check bits k, there is only one value of the number of data bits m for which the check functions will be self-dual. It is m=2k-2, k &Element &naturals (k>1). For all other modified Hamming codes, the check functions are not self-dual. A condition for converting check functions of such Hamming codes into self-dual functions is formulated. The authors proposed the structure of the organization of the built-in control circuit according by the two diagnostic parameters indicated above. The results of simulating self-dual devices with calculations testing using modified Hamming codes with self-dual control functions are presented. © 2023 IEEE.

关键词： Boolean functions

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FPGA Self-Diagnosing and Testable control Devices for Railway Switch Point

FPGA Self-Diagnosing and Testable Control Devices for Railwa...

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2023 Seminar on Networks, Circuits and Systems, NCS 2023

作者： Efanov, Dmitrii V. Pashukov, Artem V. Khoroshev, Valerii V. Peter the Great St. Petersburg Polytechnic University Institute of Mechanical Engineering Materials and Transport Higher School of Transport St. Petersburg Russia Department of Automation Remote Control and Communication on Railway Transport Moscow Russia

ISBN: (纸本)9798350370386

The authors solve the control devices synthesis problem for railway automation and remote-control devices. At the same time, the devices are endowed with the automatic fault detection properties and self-diagnosis, including pre-failure state control. As an example, a control device for a railway switch point mechanism is considered. As an element base for the implementation of the control device, field-programmable gate array (FPGA) is used. The authors considered a solution that implies the finite state machines (FSM) with data from external systems using for technical diagnostics and monitoring in the process of developing a device when describing its operation. This linkage allows to endow the control device with the properties of self-diagnosis during operation. This does not affect the device safety and its operation in any way. Linking with the technical diagnostics and monitoring system increases the technical staff information content due to the timely generation of data on the occurrence of a control device pre-failure state. Even though we synthesized a device based on FPGA, the synthesis approach itself is universal and can be easily used with any element base. It should be noted that it is expedient to link directly with diagnostic equipment in the future, minimizing the amount of hardware used. The solution of this problem requires additional research. © 2023 IEEE.

关键词： Remote control

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Simulation Method for Reliability Prediction of Switching Power Supply injected with PoF Model

Simulation Method for Reliability Prediction of Switching Po...

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System Reliability and Safety engineering (SRSE), International Conference on

作者： Kaiwen Xiao Cen Chen Weiming Liu Shujuan Wang Xiaoying Gao Guofu Zhai Department of Electrical Engineering & Automation Harbin Institute of Technology Harbin China Beijing Aerospace Automatic Control Institute Beijing China

ISBN: (数字)9798350356083

ISBN: (纸本)9798350356090

Switching power supplies are widely used in aerospace, new energy and many other fields. During long-term operation, various electronic components in these supplies experience performance degradation due to continuous electrical and thermal stress, leading to changes in output characteristics. This is the fundamental reason affecting the reliability of switching power supplies. However, the current combination of physics of failure (PoF) models and simulation technique is imperfect, and most methods cannot achieve batch injection of multiple device failures. This paper proposes a reliability prediction simulation method for switching power supplies based on PoF model injection. By focusing on a switching circuit, the approach involves digital twin modeling and validation, failure mechanism and sensitivity analysis, key failure components degradation modeling, and batch degradation simulation. This method achieves continuous degradation data of multiple components based on the PoF model through batch injection, improving the efficiency and accuracy of reliability prediction for switching power supplies.

关键词： Degradation Power supplies Switches Predictive models Reliability engineering Mathematical models Data models Integrated circuit modeling Thermal stresses Stress

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Boundary Sliding Mode control of a Diffusion Process under Sampling and Hold: Chattering Analysis

Boundary Sliding Mode Control of a Diffusion Process under S...

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International Workshop on Variable Structure Systems, VSS

作者： Paul Mayr Stefan Koch Markus Reichhartinger Alessandro Pisano Institute of Automation and Control Graz University of Technology Graz Austria Department of Electrical and Electronic Engineering University of Cagliari Cagliari Italy

ISBN: (数字)9798350353686

ISBN: (纸本)9798350353693

This paper investigates discretization chattering effects in a distributed-parameter process governed by the diffusion PDE and equipped with a sliding-mode-based boundary controller. The collocated measurement is sampled in time and the boundary control signal is applied through a zero-order-hold element. The limit cycle modes constituting the chattering effects are determined exactly by exploiting the difference equation method, yielding their period and spatially dependent amplitude. Simulation results show that the theoretically determined limit cycle modes occur in the closed-loop system.

关键词： Variable structure systems Simulation Difference equations Conferences Process control Limit-cycles Diffusion processes Time measurement Closed loop systems Sliding mode control

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A characteristic modeling method of error-free compression for nonlinear systems

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control Theory and Technology 2021年第3期19卷 375-383页

作者： Bin Meng Yun-Bo Zhao Jing-Jing Mu Science and Technology on Space Intelligent Control Laboratory Beijing Institute of Control EngineeringBeijingChina Department of Automation University of Science and Technology of ChinaBeijingChina China Aerospace Science and Technology Corporation BeijingChina

The existence of error when compressing nonlinear functions into the coefficients of the characteristic model is known to be a key issue in existing characteristic modeling approaches,which is solved in this work by an error-free compression *** first define a key concept of relevant states with corresponding compressing methods into their coefficients,where the coefficients are continuous and bounded and the compression is ***,we give the conditions for decoupling characteristic modeling for MIMO systems,and sequentially,we establish characteristic models for nonlinear systems with minimum phase and relative order two as well as the flexible spacecrafts,realizing the equivalence in the characteristic model ***,we explicitly explain the reasons for normalization in the characteristic model theory.

关键词： Characteristic modeling Relevant states Error-free compression Flexible spacecraft Normalization

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Adaptive Decentralized Asymptotic Tracking control for Large-Scale Nonlinear Systems With Unknown Strong Interconnections

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IEEE/CAA Journal of Automatica Sinica 2022年第1期9卷 173-186页

作者： Ben Niu Jidong Liu Ding Wang Xudong Zhao Huanqing Wang College of Information Science and Engineering Shandong Normal UniversityJinan 250014China School of Artificial Intelligence Nankai UniversityTianjin 300071China Faculty of Information Technology Beijing University of TechnologyBeijing 100124 State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Control Science and Engineering Dalian University of TechnologyDalian 116023China Department of Mathematical Science and Automatization Institute Bohai UniversityJinzhou 121000China

An adaptive decentralized asymptotic tracking control scheme is developed in this paper for a class of large-scale nonlinear systems with unknown strong interconnections,unknown time-varying parameters,and ***,by employing the intrinsic properties of Gaussian functions for the interconnection terms for the first time,all extra signals in the framework of decentralized control are filtered out,thereby removing all additional assumptions imposed on the interconnec-tions,such as upper bounding functions and matching ***,by introducing two integral bounded functions,asymptotic tracking control is ***,the nonlinear filters with the compensation terms are introduced to circumvent the issue of“explosion of complexity”.It is shown that all the closed-loop signals are bounded and the tracking errors converge to zero *** the end,a simulation example is carried out to demonstrate the effectiveness of the proposed approach.

关键词： Adaptive decentralized control asymptotic tracking control large-scale nonlinear systems unknown strong interconnections

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