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Backstepping Based Trajectory Tracking Control for a Four-Wheel Mobile Robot with Differential-Drive Steering

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Backstepping Based Trajectory Tracking Control for a Four-Wh...

Algorithms for Increasing of the Effectiveness of the Making Decisions by Intelligent Fuzzy Systems

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作者： Yuyao Hao Jian Wang Sergey A.Chepinskiy aleksandr J.Krasnov Shirong Liu School of Automation Hangzhou Dianzi University ITMO University

ISBN: (纸本)9781538629185

This paper proposed a four-wheel drive differential steering method for trajectory *** designed an integral backstepprng controller and constructed a simple virtual feedback variable,simplified the controller design and improved the response speed and precision of the *** connected with the Lyapunov stabihty criterion which proved the design of control law with global *** simulation experiment results verified the effectiveness and feasibility of the control law.

关键词： Four-wheel mobile robot trajectory tracking integral backstepping Lyapunov stability

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Journal of Electrical Engineering 2015年第1期3卷 30-35页

作者： Olga Dolinina aleksandr Shvarts Faculty of Applied lnformation Technologies Yury Gagarin State Technical University of Saratov Saratov 410054 Russia

There are considered rule-based intelligent systems using fuzzy inference. Comparative analysis of different approaches and algorithms of making decisions on the base of fuzzy logic is given. Using of the parallel calculations can reduce the time of making decision in case of large-scale systems. Effectiveness of parallel calculations depends on the grouping of the rules and variables. Building of the graph of the dependence of the rules and the graph of dependence of the linguistic variables are suggested. On the base of the developed groups of rules and defuzzification of the linguistic variables we suggest to reduce the time of making decision and therefore to increase the effectiveness of the decision making with using of parallel calculations for each group.

关键词： Intelligent systems fuzzy inference increasing of the effectiveness of the making decisions grouping of the rules andvariables building of the rules' dependence.

Lows of Wear Process of the Friction Pair “0.45% Carbon Steel—Polytetrafluoroethylene” during Sliding from the Position of Fracture Mechanics

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World Journal of Mechanics 2019年第5期9卷 95-104页

作者： aleksandr V. Bogdanovich Department of Theoretical and Applied Mechanics Belarusian State University Minsk Belarus

The results of the tests for a friction pair “a cylindrical specimen made of 0.45% carbon steel—a counter specimen-liner made of polytetrafluoroethyleneF4-B” during sliding friction are presented. The test results at different levels of contact load are analyzed using the Archard’s equation and are presented as a friction fatigue curve. The concept of the frictional stress intensity factor during sliding friction is introduced, and an expression that relates the wear rate to this factor and is close in shape to the Paris equation in fracture mechanics is proposed.

关键词： Sliding Friction Contact Pressure Wear Frictional Stress Intensity Factor Polymer

ITO-free silicon-integrated perovskite electrochemical cell for light-emission and light-detection

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Opto-Electronic Advances 2023年第9期6卷 45-58页

作者： Maria Baeva Dmitry Gets Artem Polushkin aleksandr Vorobyov aleksandr Goltaev Vladimir Neplokh Alexey Mozharov Dmitry VKrasnikov Albert GNasibulin Ivan Mukhin Sergey Makarov Alferov University Khlopina 8/3St.Petersburg 194021Russia Department of Physics and Engineering ITMO UniversityLomonosova 9St.Petersburg 197101Russia Institute of Automation and Control Processes(IACP) Far Eastern Branch of Russian Academy of SciencesUlitsa Radio 5Vladivostok 690041Primorsky KraiRussia Peter the Great St.Petersburg Polytechnic University Polytechnicheskaya 29St.Petersburg 195251Russia Skolkovo Institute of Science and Technology Nobel 3Moscow 121205Russia Qingdao Innovation and Development Center Harbin Engineering UniversityQingdao 266000China.

Halide perovskite light-emitting electrochemical cells are a novel type of the perovskite optoelectronic devices that differs from the perovskite light-emitting diodes by a simple monolayered ***,we develop a perovskite electrochemical cell both for light emission and detection,where the active layer consists of a composite material made of halide perovskite microcrystals,polymer support matrix,and added mobile *** perovskite electrochemical cell of CsPbBr3:PEO:LiTFSI composition,emitting light at the wavelength of 523 nm,yields the luminance more than 7000 cd/m2 and electroluminescence efficiency of 4.3 lm/*** device fabricated on a silicon substrate with transparent single-walled carbon nanotube film as a top contact exhibits 40%lower Joule heating compared to the perovskite optoelectronic devices fabricated on conventional ITO/glass ***,the device operates as a photodetector with a sensitivity up to 0.75 A/W,specific detectivity of 8.56×1011 Jones,and linear dynamic range of 48 *** technological potential of such a device is proven by demonstration of 24-pixel indicator display as well as by successful device miniaturization by creation of electroluminescent images with the smallest features less than 50μm.

关键词： composite inorganic halide perovskite silicon single walled carbon nanotubes light-emitting electrochemical cell photodetector indicator display

外加同步磁场对短路过渡CO2焊接过程的影响

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焊接学报 2020年第9期41卷 16-21,I0001,I0002页

作者：邹文凤李逸文梅强 Babkin aleksandr 常云龙沈阳工业大学沈阳110870 俄罗斯利佩茨克国立技术大学利佩茨克398024

短路过渡CO2气体保护焊由于低成本、高效率、便于实现全位置焊接,广泛应用在工业制造领域,但是在焊接过程中,特别是在较高的焊接电流下,存在许多诸如飞溅,成形差,过渡过程不稳定等问题.文中提出了一种通过施加同步磁场来改善焊接中存在... 详细信息

短路过渡CO2气体保护焊由于低成本、高效率、便于实现全位置焊接,广泛应用在工业制造领域,但是在焊接过程中,特别是在较高的焊接电流下,存在许多诸如飞溅,成形差,过渡过程不稳定等问题.文中提出了一种通过施加同步磁场来改善焊接中存在的问题的新方法.研究了不同类型的燃弧段同步磁场对焊接过程的影响.用激光作为背光,采用高速摄像系统拍摄焊接过程,观察熔滴过渡过程,计算熔滴的大小和过渡频率等.结果表明,在纵向同步磁场的作用下,可以有效地减少燃弧时间;施加同步磁场后,熔滴过渡频率范围都得到不同程度的缩小,熔滴过渡过程更稳定,并且在纵向磁场Im(LMF)=200 A时,熔滴的过渡频率大幅增加;磁场作用下,带尖角的熔滴变为圆润无尖角的球形或椭球的熔滴,熔滴的尺寸减小.

关键词：短路过渡同步磁场 CO2焊接熔滴过渡频率熔滴形态

Analysis and Numerical Simulation of Forced Cooling in Induction Coils With High Current Density

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Journal of Iron and Steel Research International 2012年第S2期19卷 758-761页

作者： BRESSAN Fernando FORZAN Michele LUPI Sergio NIKANOROV aleksandr NACKE Bernard University of Padua Department of Electrical Engineering Institute of Electrotechnology Leibniz Universitat Hannover

A static model of the forced cooling of inductors used for induction heating is proposed in order to achieve better coil design to prolong its lifetime and prevent *** main aim is to define for the most common copper tubes and inductor geometries an equivalent convection heat transmission coefficient depending upon temperature and pressure of the cooling fluid,in order to model the very complex physics of forced cooling with a strongly simplified *** model,called 'Line Region Model',considers only the coil's copper tube and its internal surface(interface copper-water)as boundary where the heat exchange conditions are imposed.

关键词： coefficient of heat transfer by convection forced cooling of inductor high current density

Influence of Magnetochemical Treatment on Morphology and Magnetic Properties of FeN Films

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Journal of Iron and Steel Research International 2012年第S2期19卷 633-636页

作者： ELENA Shalygina ALISA Rozhnovskaya TATYAYNA Kaminskaya aleksandr Shalygin ILYA Ryjikov Faculty of Physics Moscow State University Institute for Theoretical and Applied Electromagnetics

The results on investigation of the magnetochemical effect on morfology and magnetic properties of FeN thin-film systems are *** was established that the chemical etching of the FeN samples in the presence of a magnetic field influences strongly on both surface morphology and their magnetic *** particular,the local values of the saturation field of the chemically treated FeN thin-film systems differ significantly as compared to the as-deposited *** fact was explained by the appearance of relief inhomogeneities on surface of the studied samples,which intensified the stray fields influence on the measured magnetic characteristics.

关键词： magnetochemical effect magneto-optical effect magnetic properties morphology thin-film systems

Clever Nuclear Fuel Technology

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Journal of Energy and Power Engineering 2014年第5期8卷 852-856页

作者： Igor Loktev Yuriy Goncharov aleksandr Basihin Michael Zarubin aleksandr Strukov Joint-Stock Company "Novosibirsk Chemical Concentrates Plant" Novosibirsk 630110 Russia

The purpose of given article-consideration of the basic features of modern manufacturing of nuclear fuel which would confirm fact, that the manufacturer does everything that its production would respond not only to requirements of the consumer, but also to its expected inquiries, and would correspond to intended purposes of fuel. It was defined main tendencies and features of modern technology, especially in nuclear fuel production, on base of meeting discussions, themes of journal articles on nuclear subject. They are correspond with practice of JSC NCCP （Novosibirsk Chemical Concentrates Plant） and listed in the paper. In result of it number of base features of any advanced technology, not only nuclear, described here with examples from NCCP＇s practice. Of course, there is no certain list of all attributes of modern manufacturing as there is no limit to its perfection. These categories are forming by current needs of the market, but listed ones must be.

关键词： Modern technology internal criteria modeling stability controllability predictability innovation communicability design aesthetics.

Methodologies for preparation of prokaryotic extracts for cell-free expression systems

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Synthetic and Systems Biotechnology 2020年第4期5卷 252-267页

作者： Stephanie D.Cole aleksandr E.Miklos Abel C.Chiao Zachary Z.Sun Matthew W.Lux US Army Combat Capabilities Development Command Chemical Biological Center 8567 Ricketts Point RoadAberdeen Proving GroundMD21010USA Division of Biology and Biological Engineering California Institute of TechnologyPasadenaCAUSA Synvitrobio Inc. San FranciscoCAUSA 8567 Ricketts Point Road Bldg E3549 Room B140APGMD21010USA

Cell-free systems that mimic essential cell functions,such as gene expression,have dramatically expanded in recent years,both in terms of applications and widespread *** we provide a review of cell-extract methods,with a specific focus on prokaryotic ***,we describe the diversity of Escherichia coli genetic strains available and their corresponding *** then trace the history of cell-extract methodology over the past 20 years,showing key improvements that lower the entry level for new ***,we survey the rise of new prokaryotic cell-free systems,with associated methods,and the opportunities ***,we use this historical perspective to comment on the role of methodology improvements and highlight where further improvements may be possible.

关键词： Cell-free systems Cell-free expression Cell-free extract Synthetic biology Methods