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International (EPE-PEMC) Power Electronics and Motion Control Conference

作者： A. Agarwal P. Sanjeevikumar V. Agarwal S. Rajasekar M. Pastor M. Cernat Department of Electrical Engineering National Institute of Technology Delhi India Department of Electrical & Electronics Engineering University of Johannesburg Auckland Park South Africa Department of Electrical Engineering M.N. National Institute of Technology Allahabad India Technology and Development Power Grid Corporation of India Limited Gurgaon India Department of Electrical Engineering & Mechatronics Technical University of Košice Košice Slovak Republic Department of Electrical Engineering Transilvania University of Brasov Brasov Romania

ISBN: (纸本)9781509017997

A generalized frequency converter has been realized which makes use of a cyclo-converter in newer form AC-AC converter. An attempt has been made to operate this converter both in a conventional low frequency AC-AC converter and a new high frequency AC-AC converter. The ability to directly affect the frequency conversion of power without any intermediate stage involving DC power is a huge advantage of the system. The output of this converter has a frequency either f o = f i × N r or f o = f i /N r . where N r is an integer and f i is the source frequency. A methodology is developed to generate the required trigger signal for any integer multiple/sub multiple of the output frequency. The undesirable harmonic components in the output of the frequency converter have been minimized using four modulation techniques namely; sinusoidal pulse width modulation (SPWM), delta modulation (DM), trapezoidal modulation (TM) and space vector modulation (SVM) technique. The converter is simulated using well known software package MATLAB. Comparative simulation analysis is presented for a single phase frequency converter (SPFC) topology with all these modulation techniques when the converter is operating both step up as well as for step down mode.

关键词： Frequency modulation Frequency conversion Power harmonic filters Time-frequency analysis Harmonic analysis Delta modulation

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An Improved Faulting Detection Algorithm for Subway Tunnel Segment

An Improved Faulting Detection Algorithm for Subway Tunnel S...

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International Conference on Wireless Communications, Signal Processing and Networking

作者： Zhengzhe Yang Xinwen Gao Haibing Xia School of Mechatronics Engineering and Automation Shanghai University Zhabei District China Technology Research and Development Center Shanghai Tunnel Engineering Rail Transit Design and Research Institute Xuhui District China

ISBN: (纸本)9781467393393

Novel security detection technology are needed to meet the growing demand of subway operation. In this paper, an improved faulting detection algorithm for subway tunnel segment is proposed. A combined denoising technique is used to convert the depth image of faulting acquired by Kinect into binary image of the height difference which can be processed by digital image. The obvious advantage of this method is that it can avoid the interference of environmental light and improve the detection speed. In addition, we focus on how to classify and identify different types of faulting line based on the idea of deep learning algorithm. And a fast CNN (convolution neural network) has been built to classify and identify faulting line. Finally, it shows that the proposed algorithm is effective through the experimental data.

关键词： Faulting Deep learning Depth image Classification and recognition Convolution operation

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Synchronization of rigid body dynamics in SE(3) without velocity measurement

Synchronization of rigid body dynamics in SE(3) without velo...

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Asian Control Conference

作者： Yun-Tae Kim Hyo-Sung Ahn Electronics Safety Control Development Team Hyundai Motor Company Korea School of Mechatronics Gwangju Institute of Science and Technology (GIST) Buk-gu Gwangju Korea

ISBN: (纸本)9781479978632

In this paper, we first propose a control law for synchronization of multi-agent systems in Special Euclidean group SE(3). Then, as an extension of the proposed synchronization algorithm, we propose another control algorithm for the same task without using velocity measurement. It will be shown that the synchronization can be enabled on the basis of an auxiliary dynamic system and double integrated consensus algorithm. Additionally, to overcome the disadvantage of the Euler angles, we use a quaternion. Using the Lyapunov stability analysis, we can verify that the proposed algorithms could ensure the synchronization in the attitude and position as well as in angular and linear velocities. Simulation results demonstrate the effectiveness of theoretical results.

关键词： Synchronization Quaternions Dynamics Force Torque Velocity measurement Heuristic algorithms

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Am design of a wafer conditioning table

Am design of a wafer conditioning table

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ASPE 2014 Spring Topical Meeting: Dimensional Accuracy and Surface Finish in Additive Manufacturing

作者： Oosterhuis, Gerrit Villegas, Alejandro Ciftci, Meltem Vogels, John Schutten, Jan Riahi, Golara Mechatronics and System Engineering VDL ETG Technology and Development BV Eindhoven Netherlands

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Applicative CAD/CAM methodology for parameterization the rolling surface of railway wheels

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UPB Scientific Bulletin, Series D: Mechanical Engineering 2015年第4期77卷 151-164页

作者： Ghionea, Ionuţ Gabriel Cioboatǎ, Doina Ghionea, Adrian Ćuković, Saša Dept. of Machine Manufacturing Technology University Politehnica of Bucharest Romania National Institute of Research and Development in Mechatronics and Measurement Technique Romania Dept. of Machines and Manufacturing Systems University Politehnica of Bucharest Romania Faculty of Mechanical Engineering Kragujevac University of Kragujevac Serbia

During the operation of the rolling stock, the contact surfaces of the wheels and rail become worn. The wear can lead to unwanted changes of the wheel and rail profile and, consequently, to changes in the properties of the contact surfaces which can direct to instability in the movement of vehicles. Therefore, the maintenance and repair of the rolling stock are important for traffic safety and passenger comfort. The paper presents the main types of defects that arise while rolling the wheels of the rail transport vehicles, some types of machine tools and cutting tools and recommended values of shaping or reshaping parameters. It is also presented a methodology of parametric representation of profiles and rolling surfaces using CAD techniques. There are analysed some profiles among those indicated in European norms in the field. © 2015, Politechnica University of Bucharest. All rights reserved.

关键词： Computer aided design

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Constrained iterative feedback tuning for robust high-precision motion control 19

Constrained iterative feedback tuning for robust high-precis...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： Van Der Velden, Bart J.C.H. Oomen, Tom Heertjes, Marcel F. Control Systems Technology Group Department of Mechanical Engineering Eindhoven University of Technology Eindhoven Netherlands Mechatronics Technology Development ASML Veldhoven Netherlands

ISBN: (纸本)9783902823625

The aim of this paper is to extend iterative feedback tuning (IFT), which is a data-based approach for controller tuning, with robustness constraints. Hereto a constrained IFT problem is formulated that is solved by introducing a penalty function. Essentially, the gradient estimates decompose into (a) the well-known IFT gradients and (b) the gradients with respect to this penalty function. Experimental results obtained from the motion control systems of an industrial wafer scanner confirm enhanced performance with guaranteed robustness properties. © IFAC.

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Robust data-driven control for the stage synchronization problem 19

Robust data-driven control for the stage synchronization pro...

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19th IFAC World Congress on International Federation of Automatic Control, IFAC 2014

作者： Heertjes, Marcel F. Galluzzo, Marco Kuindersma, Lucas Mechanical Engineering Department Eindhoven University of Technology Netherlands Dipartimento di Automatica e Informatica Politecnico di Torino Italy Mechatronics Technology Development ASML Netherlands

ISBN: (纸本)9783902823625

This paper discusses a method for introducing frequency-domain robustness constraints in a data-driven control design. The method is based on adaptive weighting filters used in a time-domain cost function to be minimized. In an iterative way, violation of the frequency-domain robustness constraints is checked by model prediction and accounted for by adapting the weighting filters. The method is applied to the stage synchronization problem in wafer scanners, which involves synchronization of the outputs of two motion systems, and will be discussed in view of both simulation results and experimental results. © IFAC.

关键词： Time domain analysis

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Methodology for estimation of probable location of VRU before impact using data from post-crash analysis

Methodology for estimation of probable location of VRU befor...

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International Research Council on the Biomechanics of Injury Conference, IRCOBI 2014

作者： Subramanian, Hariharan S. Mukherjee, Sudipto Chawla, Anoop Göhlich, Dietmar Department of Mechanical Engineering Indian Institute of Technology Delhi India Department of Product Development Methods and Mechatronics Technische Universität Berlin Germany

The incidence pattern of vulnerable road user (VRU) injury is modified by the transport infrastructure on the ground. Recent improvements in modelling capability introduce the possibility of evaluating performance of safety measures by incorporating a distribution instead of a single standardized test. The question addressed in this work is to estimate the probability distribution of crash initiation modes based on post-crash observations. A multi-body simulation based approach of using adaptive Markov Chain Monte Carlo (MCMC) sampling techniques implemented in statistical software "R" has been used. The two input variables under study were location of VRU along the lateral axis in front of vehicle and shape of vehicle front. The observed output was the locations of head hits on vehicle front profile. Simulation studies on VRU head crash locations from the German In-depth Accident Study (GIDAS) with the severity of injury and the crash vehicle details have been used. These converge to a distribution with mean around the center plane of the vehicle with spread of around 30 cm in one standard deviation.

关键词： Probability distributions

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Identification and assessment of vehicle seat adjuster sound quality

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International Journal of Vehicle Noise and Vibration 2014年第1-2期10卷 51-63页

作者： Wang, Xu Subic, Aleksandar Ren, He Shu, Hongli School of Aerospace Mechanical and Manufacturing Engineering RMIT University Bundoora East VIC 3083 Australia Jiangxi Professional Institute of Mechatronics Technology Nanchang North Development District ICP 05001964 Fenglin Road Jiangxi 330013 China

In order to improve operating noise performance of a seat adjuster mechanism, benchmarking measurements were conducted in different cars for six and eight types of seat adjustment operation. The six types of operation include: seat moving up, seat moving down, seat front end up, seat front end down, seat rear end up and seat rear end down. The eight types of operation include: seat moving forward, seat moving backward, seat moving up, seat moving down, seat front end up, seat front end down, seat rear end up and seat rear end down. The noise and vibration levels, sound quality and root causes of the noise problem have been analysed and discussed in this paper. The noise characteristics have been identified, and the psychoacoustic parameters have been used to quantify sound quality of the seat adjuster. The objective assessment results have been found to match well with subjective evaluation results. © 2014 Inderscience Enterprises Ltd.

关键词： Psychoacoustic

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Centralized monitoring method for isomeric heat treatment equipments

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Key Engineering Materials 2014年 584卷 81-86页

作者： Xiao, Xinhua Yang, Xiaofeng Yu, Hongbin Peng, Junqiang School of Mechanical Engineering Tianjin Polytechnic University Tianjin China Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology Tianjin China Product Development Department Tianjin Hongda Textile Machinery Co. Ltd Tianjin China

ISBN: (纸本)9783037858721

Heat treatment equipment are usually harmful to people, they need to be monitored remotely. As the fact that different types of equipment are used in factories, which leads to the problem that monitoring equipment is difficult. Therefore, research on remote centralized temperature monitoring system is necessary. The concept of isomeric equipment is proposed. The framework of monitoring system is established, which is constituted of temperature control instruments, monitoring server and clients. The functions of monitoring system are described, such as setting temperature, receiving temperature, showing the chart of temperature, accumulating and reusing heat treatment experience etc. The key technologies of monitoring system including dynamic protocol adapter and knowledge accumulation and reuse are also explained. Finally, the system is applied in a factory. The engineer can monitor almost all of the heat treatment equipment only by use the system in the office. Copyright © 2014 Trans Tech Publications, Switzerland.

关键词： Heat treatment

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