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Dynamical behavior of a mobile system with two degrees of freedom near the resonance

Acta Mechanica Sinica 2011年第1期27卷 7-17页

作者： klaus zimmermann Igor Zeidis Faculty of Mechanical Engineering Technische Universitaet Ilmenau

The design of mobile robots that can move without wheels or legs is an important engineering and technological ***-propelling mechanisms consisting of a body that has contact with a rough surface and moveable internal masses are *** models of such systems are presented in this ***,a model of a vibration driven robot that moves along a rough horizontal plane with isotropic dry friction is *** is shown that by changing the off-resonance frequency detuning in sign,one can control the direction of motion of the *** addition,a locomotion system which moves in an environment with anisotropic viscous friction is *** all models,the method of averaging to obtain an algebraic equation for the steady-state＂average＂velocity of the system is used. Prototypes were constructed to compare the theoretical results with experimental ones.

关键词： Dynamics Friction Resonance Vibrationdriven systems

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Analysis of the Vibrissa Parametric Resonance Causing a Signal Amplification during Whisking Behaviour

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Journal of Bionic Engineering 2016年第2期13卷 312-323页

作者： Tatiana Volkova Igor Zeidis Hartmut Witte Manuela Schmidt klaus zimmermann Technische Universiat Ilmenau Technical Mechanics Group 98693 Max-Planck-Ring 12 Ilmenau Germany Technische Universitat Ilmenau Biomechatronics Group 98693 Max-Planck-Ring 12 Ilmenau Germany Friedrich-Schiller-Universitat Jena Institute of Systematic Zoology and Evolutionary Biology with Phyletic Museum 07743 Erbertstrafle 1 Jena Germany

The paper deals with the mechanical vibrational motion ofvibrissae during natural exploratory behaviour of mammals. The theoretical analysis is based on a mechanical model of a cylindrical beam with circular natural configuration under an applied periodic force at the tip, which corresponds to the surface roughness of an investigated object. The equation of motion of the beam is studied using the Euler-Bemoulli beam theory and asymptotic methods of mechanics. It is shown that from the me- chanical point of view the phenomenon of parametric resonance of the vibrissa is possible. It means that the amplitude of forced vibrations of a vibrissa increases exponentially with time, if it is stimulated within a specific resonance frequency range, which depends on biomechanical parameters of the vibrissa. The most intense parametric resonance occurs, when the excitation frequency is close to the doubled natural frequency of free vibrations. Thus, it may be used to distinguish and amplify specific periodic components of a complex roughness profile during texture discrimination.

关键词： vibrissa whisking vibration tactile sensor beam theory parametric resonance

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流程管理的重新定义

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流程工业 2007年第5期 44-44,46页

作者： klaus zimmermann 西门子A&D集团的WinCC视窗控制中心

在生产无菌透析液时，要求提供严格的生产过程和产品质量证明。为了弥补可能存在的漏洞，从而保障生产过程的畅通无阻，生产厂商将SCADA系统监控和数据采集功能的软件更新到新的水平，增加了新的功能：对备用数据进行采集和保存，以及... 详细信息

在生产无菌透析液时，要求提供严格的生产过程和产品质量证明。为了弥补可能存在的漏洞，从而保障生产过程的畅通无阻，生产厂商将SCADA系统监控和数据采集功能的软件更新到新的水平，增加了新的功能：对备用数据进行采集和保存，以及轻松地进行数据分析。

关键词：流程管理定义生产过程数据采集 SCADA 产品质量软件更新系统监控

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The Root Cap Determines Ethylene-Dependent Growth and Development in Maize Roots

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Molecular Plant 2008年第2期1卷 359-367页

作者： Achim Hahn Roman zimmermann Dierk Wanke klaus Harter Hans G. Edelmann Botanisches Institut Universitfit zu Koin Gyrhofstr. 15 D-50931 Koin Germany Present address: ZMBP Pflanzenphysiologie University TQbingen Auf der Morgenstelle 1 D-72076 TQbingen Germany Institut fur Entwicklungsbiologie Universitat zu Koin Gyrhofstr. 17 D-50931 Koin Germany Institut fur Entwicklungsbiologie Universitat zu Koin Gyrhofstr. 17 D-50931 Koln Germany ZMBP Pflanzenphysiologie Universitat Tubingen Auf der Morgenstelle 1 D-72076 Tubingen Germany Present address: Biologie und ihre Didaktik Universitat Siegen D-57068 Siegen Germany

Besides providing protection against mechanical damage to the root tip, the root cap is involved in the perception and processing of diverse external and internal stimuli resulting in altered growth and development, The transduction of these stimuli includes hormonal signaling pathways such as those of auxin, ethylene and cytokinin. Here, we show that the root cap is essential for the ethylene-induced regulation of elongation growth and root hair formation in maize. Exogenously applied ethylene is no longer able to inhibit elongation growth when the root cap has been surgically removed prior to hormone treatment. Reconstitution of the cap positively correlates with the developing capacity of the roots to respond to ethylene again. In contrast, the removal of the root cap does not per se affect growth inhibition controlled by auxin and cytokinin. Furthermore, our semi-quantitative RT-PCR results support earlier findings that the maize root cap is a site of high gene expression activity with respect to sensing and responding to hormones such as ethylene, From these data, we propose a novel function of the root cap which is the establishment of competence to respond to ethylene in the distal zones of the root.

关键词： ROOT hairs (Botany) ETHYLENE ALKENES PLANT hormones CONTACT inhibition (Biology)

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Dual-polarization wavelength conversion of 16-QAM signals in a single silicon waveguide with a lateral p-i-n diode[Invited]

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Photonics Research 2018年第5期6卷 I0048-I0054页

作者： FRANCESCO DA Ros ANDRZEJ GAJDA ERIK LIEBIG EDSON P.DA SILVA ANNA PECZEK PETER D.GIROUARD ANDREAS MAI klaus PETERMANN LARS zimmermann MICHAEL GALILI LEIF K.OXENLOWE DTU Fotonik Technical University of DenmarkDK-2800 Kongens LyngbyDenmark IHP Im Technologiepark 2515236 Frankfurt(Oder)Germany IHP Solutions GmbH Im Technologiepark 2515236 Frankfurt(Oder)Germany Institut for Hochfrequenz-und Halbleiter-Systemtechnologien TU BerlinEinsteinufer 2510587 BerlinGermany AMETEK CTS Europe GmbH L unener StraBe 211-21259174 KamenGermany

A polarization-diversity loop with a silicon waveguide with a lateral p-i-n diode as a nonlinear medium is used to realize polarization insensitive four-wave mixing. Wavelength conversion of seven dual-polarization 16-quadrature amplitude modulation(QAM) signals at 16 GBd is demonstrated with an optical signal-to-noise ratio penalty below 0.7 dB. High-quality converted signals are generated thanks to the low polarization dependence(≤0.5 dB) and the high conversion efficiency(CE) achievable. The strong Kerr nonlinearity in silicon and the decrease of detrimental free-carrier absorption due to the reverse-biased p-i-n diode are key in ensuring high CE levels.

关键词： Invited Dual-polarization wavelength conversion of 16-QAM signals in a single silicon waveguide with a lateral p-i-n diode QAM

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Latest development status of Qcells *** NEO technology

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第十九届中国太阳级硅及光伏发电研讨会(19th CSPV)

作者： J?rg W.Müller Ansgar Mette Stefan H?rnlein Ingmar H?ger Martin Schaper Kai Petter Matthias Jungh?nel Christian Klenke Anika Weihrauch Hans-Christoph Ploigt Ohjin Kwon Antje Sch?nmann Osama Tobail Kyunghun Kim Axel Schwabedissen Maximilian Kauert klaus Duncker René H?nig Janko Cieslak Florian Stenzel Bj?rn Faulwetter-Quandt Jessica Scharf Friederike Kersten Benjamin Lee Sissel Tind Kristensen Olaf Schnelting Carsten Baer Martina Queck Gregor zimmermann Matthias K?hler Nicole Lampa Britta Pohl-Hampel Lorenzo Burtone Larissa Niebergall Matthias Schütze Susanne Schulz Fabian Fertig Stefan Peters Markus Fischer Qcells Thalheim R&D Center(Hanwha Q CELLS GmbH)

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