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Annual Conference of Industrial Electronics Society

作者： Yu Wu Bo Yang Dafeng Zhu Cailian Chen Department of Automation Shanghai Jiao Tong University Shanghai China Key Laboratory of System Control and Information Processing Ministry of Education of China China Shanghai Engineering Research Center of Industrial Intelligent Control and Management Shanghai China

ISBN: (数字)9781665464543

ISBN: (纸本)9781665464550

High-frequency time-series data such as vibration signals will consume a lot of communication resources and require very high network bandwidth. Reducing the amount of data transmission while ensuring its availability is particularly important and challenging in high-frequency scenarios. Dual prediction scheme (DPS) can significantly reduce the amount of data transmission while ensuring data accuracy. However, traditional DPS cannot be applied to high-frequency scenarios due to the limitation of the mechanism design and model inference speed. We propose a novel long sequence DPS to efficiently reduce the volume of high-frequency data transmission in real time. To overcome the accuracy degradation due to gradient vanishing in long sequence prediction, we also propose an attention-based prediction model. Furthermore, we propose Informer to reduce the model’s computational complexity and enable fast inference and deployment on resource-constrained edge gateways. Experiments based on the real-world dataset show that the proposed scheme can efficiently cope with high-frequency data, reduce its transmission volume, and ensure data accuracy.

关键词： Vibrations Industrial electronics Accuracy Computational modeling Mechanism design Predictive models Logic gates Real-time systems Data communication Industrial Internet of Things

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Performance Analysis of PMSM Based on Improved Trapezoidal Halbach Magnet Arrays 17

Performance Analysis of PMSM Based on Improved Trapezoidal H...

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17th IEEE Conference on Industrial Electronics and Applications, ICIEA 2022

作者： Yu, Zihao Yan, Liang Zhou, Yuchen Liu, Jiatong He, Xinghua Aboelhassan, Ahmed Beihang University School of Automation Science and Electrical Engineering Beijing100191 China Beihang University Science and Technology on Aircraft Control Laboratory Beijing100191 China Beihang University Ningbo Institute of Technology Ningbo315800 China College of Engineering & Technology Electrical and Control Engineering Department Alexandria1029 Egypt University of Nottingham Ningbo China Key Laboratory of More Electric Aircraft Technology of Zhejiang Province Ningbo315100 China

ISBN: (纸本)9781665409841

In this paper, a novel trapezoidal Halbach permanent magnet array is introduced to lessen the output torque ripple of a surface-mounted Permanent Magnet Synchronous Motor (PMSM). Finite Element Method (FEM), core loss, output torque, and torque ripple are examined. The harmonic components of the trapezoidal Halbach magnet arrays are analyzed by the Fast Fourier Transform (FFT). Additionally, a traditional trapezoidal Halbach magnet array-based 2D finite element model of the PMSM is also developed. The findings demonstrate the improved trapezoidal Halbach magnet array's capability to reduce the PMSM's torque ripple by lowering the intensity of the third harmonic of the air-gap flux density. In contrast to the PMSM employing traditional trapezoidal Halbach magnet arrays, the PMSM with the introduced trapezoidal Halbach arrays has a lower torque ripple by 11.84 % and a higher torque by 18.03%, while maintaining similar core loss. © 2022 IEEE.

关键词： Finite element method

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Enhancing Performance and Stability of Gain-Scheduling control System Using Evolutionary Algorithms: A Case Study on the Transport Aircraft

SSRN

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SSRN 2022年

作者： Ahmed, Aisha Sir Elkhatem Engin, Seref Naci Control and Automation Engineering Department Yildiz Technical University Istanbul34349 Turkey Khartoum Sudan

An enhanced gain-scheduling control strategy was presented to establish a smooth adaptation mechanism for the longitudinal motion of B747 between different flight envelopes. The focal objective is to accomplish a smooth and non- conservative gain-scheduling control system that has high performance and stability characteristics for different flight conditions and transitions between them. The proposed approach ensured a successful gain scheduling control system by allocating a specific error performance index that should be minimized for all flight conditions. Then all required performance indices were cohered according to flight envelope in the form of a multi-objective optimization problem that could be solved using evolutionary algorithms. The performance and stability of the transition points between different flight conditions were preserved through the sets of feasible solutions obtained by an evolutionary algorithm which are known as a set of Pareto optimal solutions. The proposed gain-scheduling system was built based on 2DoF-PID (Two-degree-of-freedom Proportional Integral Derivative) controller. An auto-decision-maker was developed to adjust the parameters of the 2DoF-PID gain-scheduling control system with the current flight condition. The proposed methodology was evaluated by simulation results according to the quality of the Pareto-front and transient response of the gain-scheduling controller for the chosen flight conditions. © 2022, The Authors. All rights reserved.

关键词： Optimal systems

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Improved Performance by Designing and Building a 1.92 Tbps ROF System Using DWDM with External Modulation and DCF

Improved Performance by Designing and Building a 1.92 Tbps R...

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Advances in engineering Science and Technology (AEST), International Conference on

作者： Mariam Lazim Ali Mahdi Hammadi Ali Al-Askery Department of Computer Engineering Middle Technical University Baghdad Iraq Department of Control and Automation Technical Engineering Middle Technical University Baghdad Iraq

Telecommunication technology is rapidly evolving, accompanied by an increase in service requirements such as higher bandwidth and service accessibility. Transferring data at high speeds and the system performance are second to none. DWDM (Dence Wavelength Division Multiplexing) can be used to meet these requirements, but it is not the only option. Long-distance transmission using DWDM systems often experiences signal degradation, which can degrade the system performance. An EDFA (Erbium-Doped Fiber Amplifier) can be used to overcome signal degradation. OptiSystem 18.0 is the DWDM link model used in this study, with a DWDM design that uses 48 channels at an average bit rate per channel of 40 Gbps. A channel spacing of 200 GHz was used. At a 50-km SMF (single-mode fiber) length, the system quality increased in terms of power and frequency spacing. With the EDFA amplifier, the linkage is 180 km long, 240 km long, and 300 km long. Changes in laser power of 10 dB were used in the study. According to the results of the analysis, power changes affect the performance of the system. DWDM with a laser power of 10 dB complies with the values of the standards for the Q factor (Quality Factor) and the BER Min Bit Error Rate parameters. The highest Q factor at a distance of 180 km is 47.008 and BER is 0 with a wavelength of 1498.213nm. The highest Q factor at a distance of 240 km is 28.19 and BER is 3.32092 * 10-175 and the wavelength is 1554.134nm. The highest Q factor at a distance of 300 km is 24.9, with BER equal to 3.66154 * 10-138, and the wavelength being 1565.495nm. According to this study, the higher the laser power used, the better the performance of the system.

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Video-based Gait Analysis with IMU and Industrial Cameras: A Pilot Study

Video-based Gait Analysis with IMU and Industrial Cameras: A...

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Medical Technologies National Conference (TIPTEKNO)

作者： Fatma Turan Sanaz Maghsoudi Hakan İlikçi Bora Ayvaz Ali Fuat Ergenç Fuat Bilgili Biomedical Engineering Boğazici University Istanbul Turkey Orthopedics and Biomedical Neurotechnology İstanbul University Istanbul Turkey Control and Automation Engineering Department Istanbul Technical University Istanbul Turkey Department of Orthopedics and Traumatology Istanbul Faculty of Medicine Istanbul University Istanbul Turkey

ISBN: (数字)9798331529819

ISBN: (纸本)9798331529826

In this study, we investigated the validity of using a two-dimensional gait analysis system, which employed industrial cameras and a custom-developed Inertial Measurement Unit system, compared to the gold standard three-dimensional Vicon gait analysis system. Four subjects with a mean age of 26.76 (SD: 0.71) were included in the study, and gait data was collected from their 8 limbs. Correlation analyses examined the relationship between the data obtained from the two-dimensional gait analysis system and the three-dimensional Vicon system. The study’s results showed a high correlation for the hip and knee joints between the two systems, but a lower correlation for the ankle joint. This pilot study demonstrated the potential of using industrial cameras and IMU systems for practical gait analysis.

关键词： Knee Ankle Correlation Measurement units Inertial navigation Gain measurement Cameras Hip

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Unilateral Payoff control is Infeasible in Network Attack-Defense Interactions

Unilateral Payoff Control is Infeasible in Network Attack-De...

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Chinese automation Congress (CAC)

作者： Kaiwen Zhao Yu Xia Qi Su Department of Automation Shanghai Jiao Tong University Shanghai China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai China

ISBN: (数字)9798350368604

ISBN: (纸本)9798350368611

Network resilience generally refers to the ability of a network to maintain normal operation in the face of various failures and disturbances, which has many applications in social, financial, communication, and transportation systems. There is a large amount of research on designing strategies to disrupt the network from the perspective of attack and to protect the network from the defense standpoint. However, attacks and defenses in the real world often occur simultaneously and repeatedly. The study of network resilience should not be limited to the structural characteristics but should consider the functional characteristics of the network. We develop a general game-theoretic framework to study attack-defense repeated interactions on complex net-works and examine the possibility of achieving precise control over the payoffs of attackers and defenders. Our findings reveal that neither the attacker nor the defender can unilaterally control their own payoff, the opponent's payoff, or any linear combination thereof. This work highlights the limitations of unilateral payoff control in real-world interaction scenarios, a consideration often overlooked in numerous theoretical studies.

关键词： Presses Interactive systems Stability criteria Transportation Games Power system stability Protection Game theory Faces Resilience

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Modeling of All-Vanadium Redox Battery Based on Dual Stream Network with Attention Mechanism

Modeling of All-Vanadium Redox Battery Based on Dual Stream ...

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International Conference on Computer and Communications (ICCC)

作者： Jiajie Zhu Bo Yang Mingxuan Cai Department of Automation Shanghai Jiao Tong University Shanghai China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Shanghai Engineering Research Center of Intelligent Control and Management Shanghai China

ISBN: (数字)9798331507077

ISBN: (纸本)9798331507084

Accurate voltage prediction for all-vanadium redox batteries (VRBs) affects the efficiency and safety of battery. In this paper, we propose a self-attention-based dual-stream neural network (SA-DSNN) model for voltage prediction under various working conditions. This approach independently processes temporal and condition data streams to reduce the noise interference. Using neural networks tailored to each of stream can more effectively extract intrinsic features. In particular, self-attention mechanisms are employed to enhance critical information. The features from both streams are fully integrated in output layer to generate final predictions. Experimental results indicate that the proposed method enhances the generalization and accuracy of VRBs model across different time scale.

关键词： Accuracy Neural networks Noise Voltage Interference Predictive models Redox Feature extraction Batteries Streams

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Digital Twin Enabled Flight control System Testing: A Physical-Virtual Mapping Experiment

Digital Twin Enabled Flight Control System Testing: A Physic...

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IEEE International Conference on Industrial Informatics (INDIN)

作者： Cheng Ren Cailian Chen Shanying Zhu Yehan Ma Xinping Guan Department of Automation Key Laboratory of System Control and Information Processing Ministry of Education of China and Shanghai Engineering Research Center of Intelligent Control and Management Shanghai Jiao Tong University Shanghai P. R. China

ISBN: (数字)9798331527471

ISBN: (纸本)9798331527488

Flight control system testing (FCST) is one of the most important testing during aircraft final assembly, however, traditional testing method highly rely on manual labor, resulting in low testing quality and efficiency. Targeting at improving the testing quality and efficiency, in this paper, we apply digtial twin (DT) technology in the FCST process for the first time. A virtual experimental platform named DT-FCST is constructed which is identical to a real wing experimental platform, supporting testing elements management and physical-virtual mapping experiments. The development process of the DT-FCST platform is detailed. Several experiments are conducted to demonstrate the effectiveness of DT technology. Based on motion scripts integrating real-time data from the cockpit, the cockpit control sticks and flight control surfaces are driven to achieve consistency between physical and virtual motions. With the help of DT technology, the entire movement process of control sticks and flight control surfaces are mapped with high fidelity in the DT-FCST platform, greatly enhancing the testing efficiency and monitoring quality.

关键词： System testing Process control Manuals Real-time systems Aircraft Informatics Surface treatment Monitoring Testing Aerospace control

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Stability analysis of systems with two additive time-varying delay components via the zero-valued equations 48

Stability analysis of systems with two additive time-varying...

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48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022

作者： Liu, Meng He, Yong Jiang, Lin School of Automation China University of Geosciences 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 University of Liverpool Department of Electrical Engineering & Electronics LiverpoolL69 3GJ United Kingdom

ISBN: (数字)9781665480253

ISBN: (纸本)9781665480253

In the case of introducing the double integral state into the augmented vector, the time-varying delay square terms in the derivative of the Lyapunov-Krasovskii functional (LKF) usually needs to be treated with some negative-determination lemmas in the existing literatures, which are only sufficient conditions and are conservative to some extent. In this work, by introducing some new augmented variables, some zero-valued equations are proposed to avoid the appearance of these time-varying delay square terms, which have great potential to reduce the conservatism. Then, a stability result in terms of linear matrix inequalities is derived via the presented zero-valued equations. Finally, a representative example is provided to testify the usefulness and meliority of the raised stability criterion. © 2022 IEEE.

关键词： Additives

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control Barrier Function-Based Force Constrained Safety Compliance control for Manipulator

Control Barrier Function-Based Force Constrained Safety Comp...

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International Conference on automation and Computing (ICAC)

作者： Haiyan Liang Xinming Wang Jianliang Mao Jun Yang The Key Laboratory of Measurement and Control of CSE Ministry of Education School of Automation Southeast University Nanjing China College of Automation Engineering Shanghai University of Electric Power Shanghai PR China Department of Aeronautical and Automotive Engineering Loughborough University Loughborough UK

In this paper, a safety-critical compliance control with force constraint is proposed for the interaction task of a manipulator in the Cartesian space. Different from the conventional impedance control approach, the interaction force constraint is considered and interpreted by designing a new Force Constrained control Barrier Function (FCCBF) with exploiting the environment model. By formulating and solving a quadratic programming with modifying the baseline impedance controller under the FCCBF constraint, the proposed controller can not only make manipulator's interaction process satisfy expected compliance without exceeding permissible contact force range, but can also improve the dynamic characteristics of the system by eliminating force overshooting phenomena. Furthermore, with using the technique of nonlinear disturbance observer, a force sensor-less FCCBF approach is also provided, where the contact force is treated as an external disturbance. Finally, the effectiveness of the proposed algorithms is verified by both simulations and experimental tests on a 6 degree-of-freedom manipulator.

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