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41st Computers and Information in engineering Conference, CIE 2021, Held as Part of the ASME 2021 International Design engineering Technical Conferences and Computers and Information in engineering Conference, IDETC-CIE 2021

作者： Kuroyanagi, Takumi Yamada, Shuho Hiramatsu, Shigeki Unesaki, Hiroshi Kondo, Shuichi Aoyama, Kazuhiro Department of Systems Innovation School of Engineering The University of Tokyo Tokyo Japan Integrated Control System Development Div. Mazda Motor Corporation Hiroshima Japan Electronic Platform Development Dept. Mazda Motor Corporation Hiroshima Japan The Research into Artifacts Center for Engineering School of Engineering The University of Tokyo Tokyo Japan

ISBN: (纸本)9780791885376

Herein, we have confirmed the importance of formulating product proposals and product-development processes equipped to cope effectively with uncertainty in the early design stage. The objective of this study was to derive the target performance and design priority order taking into account uncertainties in system design. Following the concept of set-based design, the approach adopted was to secure a set of solutions as design space that satisfy the target variables demands, dividing the design space into several clusters and evaluating each of the clusters, then gradually narrowing the cluster as the design progresses, and finally extracting the solution space that is desirable. Priority order of design was developed based on the strategy of increasing the degree of freedom of the subsequent process. The effectiveness of the proposed method was verified using the model of a plug-in hybrid vehicle. From the results, we confirmed the existence of a trade-off between design and target variables preference and development risk, that it is possible to determine the extent to which the solution space can be narrowed, that the shape of the solution space determines the design priorities, and we were able to derive a desirable design priority order according to the target performance. Copyright © 2021 by ASME

关键词： Systems analysis

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Sliding mode control of a dc-dc dual active bridge using the generalized space-state averaging description

Sliding mode control of a dc-dc dual active bridge using the...

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European control Conference (ECC)

作者： Arnau Dò ria-Cerezo Federico M. Serra Domingo Biel Robert Griñ ó Dept. of Electrical Engineering Inst. of Industrial and Control Engineering Universitat Polit&#x00E8 cnica de Catalunya Barcelona Spain Laboratorio de Control Autom&#x00E1 tico (LCA) Universidad Nacional de San Luis and CONICET Villa Mercedes Argentina Dept. of Electronic Engineering Inst. of Industrial and Control Engineering Universitat Polit&#x00E8 Dept. of Automatic Control Inst. of Industrial and Control Engineering Universitat Polit&#x00E8

ISBN: (数字)9789463842365

ISBN: (纸本)9781665479455

This paper presents a sliding mode control strategy for a dc-dc dual active bridge converter. The controller is based on a truncated model obtained using the generalized state space averaging method that transforms the mixed dc-ac dynamics of the converter into a regulation problem. The proposed controller, that uses a dynamic extension to overcome the structural problem of the non-affine control input, provides good results in terms of performance and robustness. Numerical simulations are included to validate the proposed modelling methodology and the control design.

关键词： Bridges State feedback control design Heuristic algorithms Dynamics Transforms Robustness

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Modeling and control of a half Car Active Suspension System using Sliding Mode controller and Linear Quadratic Regulator controller

Modeling and Control of a half Car Active Suspension System ...

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Renewable Energy & Sustainability (ieCRES), International engineering Conference on

作者： Abdussalam Ali Ahmed Hisham.F. A. Ramadhan Mohamed El Malki Yasser Fathi Nassar Mechanical Engineering Department Bani Waleed University Bani Waleed Libya Control System Engineering College of Electronic Technology Bani Walid Libya Department of Physics Faculty of Sciences Mohammed First University Oujda Morocco Mechanical and Renewable Energy Eng. Dept. Wadi Alshatti University Brack Libya

This paper illustrates the use of two distinct control strategies. Namely, the Sliding Mode control (SMC) and a Linear Quadratic Regulator (LQR) controller to monitor and handle the suspension system vibrations that occurred. We used a half car suspension model with (4DOF). The necessary suspension performance attributes, such as ride comfort, suspension deflection and car handling require a comprehensive control system. Three components make up this control system, which is carried out using the MATLAB application: the controller, the suspension system model, and input signals (road profile and actuator force). A comparison of the half car active suspension system LQR and SMC controllers as well as the uncontrolled suspension system is presented.

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Assembly defect classification of SMD components by cascade convolutional neural network

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Transactions of the Korean Institute of Electrical Engineers 2019年第10期68卷 1236-1243页

作者： Ryu, Jong-Hyun Kim, Young-Gyu Park, Tae-Hyoung Dept. of Control and Robot Engineering Chungbuk National University Korea Republic of School of Electronics Engineering Chungbuk National University Korea Republic of

In this paper, we propose the classification method of assembly defects in the surface mount technology process. We used a cascade convolution neural network which two convolutional neural networks were merged into one network, for assembly defect classification. The first network classifies whether the surface mount device (SMD) is defect or not. The second network classify the result of the first network more detail. We classified the SMD defects as six types using a cascade convolution neural network. Experiment result shows that the proposed method can optimize memory usage and improve classification accuracy compared to previous methods. Copyright © The Korean Institute of Electrical Engineers.

关键词： Convolution

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CBTC on-board signal fault diagnosis method based on LightGBM classification

CBTC on-board signal fault diagnosis method based on LightGB...

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Chinese Automation Congress (CAC)

作者： Linguo Chai Jinghui Zhang Wei Shangguan Xiao Xiao Xu Li Min Nie School of Electronic and Information Engineering the State Key Laboratory of Rail Traffic Control Beijing Jiaotong University Beijing PR China School of Electronic and Information Engineering Beijing Jiaotong University Beijing PR China Traffic Control Research Institute Traffic Control Technology Co. Ltd. Beijing PR China China Railway Society Beijing PR China Material Supplying Dept. State Grid Beijing Procurement Company Beijing PR China

Aiming at the problem that the semantics of CBTC on-board equipment fault record text is not precise and the word redundancy, which makes it difficult to trace the cause of the fault, this paper proposes a CBTC on-board signal fault diagnosis method based on LightGBM classification. Firstly, the relationship between appearance and fault is analyzed by combining the knowledge graph search formed by manually combing the text; then, TF-IDF is used to extract the original text features, and Doc2vec is used to realize text vectorization. The actual fault text records are divided into training sets and testing sets. The LightGBM classifier is trained to obtain the classification and diagnosis model, and 1133 testing sets are tested and verified. The results show that the accuracy of classification diagnosis of the method proposed in this paper is 90.2%, which is 17.8% higher than that of SVM classification diagnosis and conforms to the manual graph fault analysis link.

关键词： Support vector machines Fault diagnosis Training Semantics Redundancy Knowledge graphs Manuals

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A study on the control technique of LLC resonant converter for LED driver with 120Hz ripple current

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Transactions of the Korean Institute of Electrical Engineers 2019年第12期68卷 1557-1565页

作者： Kwon, Min-Jun Lee, Woo-Cheol Dept. of Electrical Electronic and Control Engineering Institute for Information Technology Convergence Hankyong National University Korea Republic of

LED(Light Emitting Diode) lighting is a light source used in various fields because of its high efficiency. In order to operate the LED, a driver consisting of a PFC(Power Factor Corrector) converter and a DC-DC converter to keep the constant current in the LED is required. DC link capacitors in LED driver can have 120Hz voltage ripple during rectification. This voltage ripple can also affect the DC-DC converter and cause 120Hz current ripple on the LED output current. LED current ripple affects power quality and system performance. Therefore, research is needed to reduce current ripple. This paper is a study on the control technique of LLC resonant converter for LED driver with 120Hz ripple current. The direct forward compensation method using the ripple current is explained base on the LLC resonant converter which is widely used as the LED power supply. The validity of the analysis and compensation method was investigated by simulation and experiment. Copyright © The Korean Institute of Electrical Engineers.

关键词： Light emitting diodes

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Improving the Performance of the Electric Vehicle Suspension System Using Sliding Mode controller and PID controller

Improving the Performance of the Electric Vehicle Suspension...

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Sustainable Energy and Future Electric Transportation (SEFET), International Conference on

作者： Abdussalam Ali Ahmed Hisham. F. A. Ramadhan Mustafa Emheisen Yasser Fathi Nassar Adel Oubelaid Mohit Bajaj Parvesh Saini Subhashree Choudhury Mechanical Engineering Department Bani Waleed University Bani Waleed Libya Control System Engineering College of Electronic Technology Bani Walid Libya Electrical Engineering Department Bani Waleed University Bani Waleed Libya Mechanical and Renewable Energy Eng. Dept. Wadi Alshatti University Brack Libya Laboratoire de Technologie Industrielle et de l'Information Faculté de Technologie Université de Bejaia Bejaia Algeria Department of Electrical Engineering Graphic Era (Deemed to be University) Dehradun India Department of Electrical Engineering Graphic Era Hill University Dehradun India Dept. of EEE Siksha ‘O’ Anusandhan (Deemed to be University) Bhubaneswar India

The purpose of this paper is to show how to identify and handle suspension system vibrations using two different control strategies: Sliding Mode control (SMC) and a Proportional Integral Derivative (PID) controller. A four-degree-of-freedom (4DOF) half-car suspension model is used. Suspension performance factors such as ride comfort, suspension deflection, and vehicle handling necessitate a thorough control system. This control system, which is carried out with the MATLAB application, is made up of three components: the controller, the suspension system model, and input signals (road profile and actuator force). The simulation results illustrate a comparison between the uncontrolled suspension system and the half-car active suspension system's PID and SMC controllers.

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A study on PWM techniques for driving PMSM inverter by 150-degree conduction method

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Transactions of the Korean Institute of Electrical Engineers 2019年第2期68卷 285-295页

作者： Lee, Seung-Yong Yoon, Duck-Yong Dept. of Electrical Electronic and Control Engineering Kongju National University Korea Republic of Inverter Division of Seoho Electric Korea Republic of

In this paper, we have studied the PWM techniques for operating inverter for PMSM with 150-degree conduction method. In the conventional upper switch PWM technique, only three upper switches perform PWM switching, so they are very much used and have a large switching loss compared to three lower switches. And torque ripple occurs due to circulating current flowing by difference of back-EMF generated between two stator windings of motor in PWM switching section of inverter where one upper switch for PWM switching is turned off and two lower switches are turned on when motor operate in high speed and at light load. So, we propose a six-switch asymmetrical discontinuous PWM(SADPWM) techniques in order to improve the disadvantages of upper switch PWM technique. The proposed PWM technique can be used as SADPWM1 and SADPWM2 technique by changing the order of PWM switching sections. Computer simulations and experiments were carried out for SPMSM of 750[W] class. Using proposed PWM technique, upper and lower switches have the same PWM switching operation. And circulating current did not flow in stator winding of motor under operating condition in which motor operate at high speed 3000[rpm] and at light load. In addition, it is confirmed that loss of switching elements in inverter is reduced at light load and torque ripple of motor does not occur. Also, in SADPWM2 technique freewheeling current does not flow in the non-conduction section and less operation loss results in comparison to SADPWM1 technique. Because proposed PWM technique can be realized only by software modification in conventional upper switch PWM technique, it can be widely used in applications using 120-degree conduction method. Also, it can be applied to inverter for BLDCM. ? The Korean Institute of Electrical Engineers. Copyright ⓒ The Korean Institute of Electrical Engineers.

关键词： Pulse width modulation

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Passivity-Based Analysis and Nudging Design for Dynamic Social Model with Bounded Rationality

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IFAC-PapersOnLine 2020年第5期53卷 338-343页

作者： Shunya Yamashita Takeshi Hatanaka Yasuaki Wasa Naoki Hayashi Kenji Hirata Kenko Uchida Dept. of Systems and Control Engineering Tokyo Institute of Technology Tokyo Japan Dept. of Electrical Engineering and Bioscience Waseda University Tokyo Japan Division of Electrical Electronic and Infocommunications Engineering Osaka University Osaka Japan Dept. of Electric and Electronic Engineering University of Toyama Toyama Japan

In this paper, we address a design problem of nudging mechanism for dynamical decision makers with bounded rationality. We first present a mathematical model for dynamic decision makers with psychological biases. We then analyze the dynamics based on so-called δ -passivity, and reveal that the bias violates passivity of decision makers. We moreover propose a nudging mechanism based on the passivity paradigm to achieve desired social behavior. The presented mechanism is finally demonstrated through numerical simulation.

关键词： population dynamics bounded rationality nudge passivity

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Dynamic Time-Threshold Based Receive Buffer for Vehicle-to-Cloud Multipath Transmission

Dynamic Time-Threshold Based Receive Buffer for Vehicle-to-C...

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2020 International Conference on Computing, Networking and Communications, ICNC 2020

作者： Zhang, Yuyang Dong, Ping Du, Xiaojiang Luo, Hongbin Zhang, Hongke Guizani, Mohsen Beijing Jiaotong University State Key Laboratory of Rail Traffic Control and Safety China Beijing Jiaotong University School of Electronic and Information Engineering China Temple University Dept. of Computer and Information Sciences United States Beihang University School of Computer Science and Engineering China Qatar University Dept. of Computer Science and Engineering Qatar

ISBN: (纸本)9781728149059

Vehicle-to-cloud is a network access model that aims to share computing resources for vehicles. In vehicle-to-cloud communication, reliable links are critical. Through multipath transmission, comprehensive utilization of heterogeneous wireless networks between the vehicle and the cloud server can effectively improve the reliability and efficiency of transmission. A large number of studies have pointed out that a receive butter can greatly improve the performance of multipath transmission in vehicle-to-cloud communication. However, most of these studies, which use receive buffers to improve multipath transmission performance, do not explicitly specify the design details of the receive butter. A classic design idea is to use a fixed length receive butter. However, this idea makes it difficult to determine the appropriate butter length in a complex vehicle-to-cloud communication scenario. This paper proposes a Dynamic Time-Threshold (DTT) receive buffer. The DTT receive buffer takes into account the instability of vehicular wireless networks, and dynamically adjusts the time-threshold so that the packets in the receive butter do not affect the overall communication performance due to premature departure or excessive waiting. We verified the performance of the DTT receive butter through a large number of simulations and real tests. By comparison, the performance of DTT receive butter is significantly better than the fixed length receive butter. © 2020 IEEE.

关键词： Network coding

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