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The nonlinear singularity phenomenon of low frequency oscillation in power system

Ma Jinglan,Wang Wei,Wan Jingsheng,Zhang Yongli

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 93-96

Abstract: In this paper, the inherent reason that causes LFO is discussed.With Hopf bifurcation theory, it is analyzedthat the nonlinear singularity phenomenon happens close to the critical points in a single-infiniteThe study indicates that because of the Hopf bifurcation, singularity phenomenon in the power system

Keywords： LFO     bifurcation theory     nonlinear     singularity    

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Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 379-385 doi: 10.1007/s11465-009-0075-0

Abstract: Singularity analysis plays an important role in the design of robots, especially for parallel robots.Singularity loci in the joint space and Cartesian space are plotted according to the Jacobin of the mechanismResult shows that the singularity loci at the joint space are two circles and one line, whereas at the

Keywords： 2-DOF orthogonal spherical parallel mechanism     singularity loci     self-motions    

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Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines

Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 120-134 doi: 10.1007/s11465-012-0321-8

Abstract:

In this paper the effect of kinematic redundancy in order to reduce the singularity loci of the directkinematics and to increase the operational, i.e., singularity-free, workspace is demonstrated.

Keywords： parallel robots     kinematic redundancy     singularity avoidance     operational workspace    

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Research on Bifurcation Property of Dike Rockfill of River Closure by End Dumping

He Changhai,Xiao Huanxiong,Hu Zhigen,Zhou Yihong

Strategic Study of CAE 2001, Volume 3, Issue 6,   Pages 69-74

Abstract: of its universal unfolding and its transition set is made by application of static bifurcation and singularitytheory in nonlinear systems in the following two circumstances： 1) the stress in rockfill (σ

Keywords： river closure by end dumping     slump     static bifurcation     singularity theory    

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Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 412-422 doi: 10.1007/s11465-016-0396-8

Abstract: However, boundary integrals with near singularity need to be calculated accurately and efficiently toif the location of the projection point is outside the element, where boundary integrals with near singularityResults demonstrate that our method is effective for regularizing the boundary integrals with near singularity

Keywords： computer aided engineering (CAE)     boundary element method (BEM)     near singularity     sinh method     coordinate    

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Kinematic, workspace and singularity analysis of a new parallel robot used in minimally invasive surgery

Alin STOICA, Doina PISLA, Szilaghyi ANDRAS, Bogdan GHERMAN, Bela-Zoltan GYURKA, Nicolae PLITEA

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 70-79 doi: 10.1007/s11465-013-0365-4

Abstract: An in-depth study of different types of singularity is performed, allowing the development of safe control

Keywords： parallel robot     minimally invasive surgery     kinematics     simulation    

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Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion

Po-Chih LEE, Jyh-Jone LEE

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 163-187 doi: 10.1007/s11465-012-0324-5

Abstract: Then, Jacobian matrix, singularity, workspace, and performance index for each mechanism are subsequently

Keywords： parallel manipulator     schoenflies motion     kinematics     singularity     workspace     performance index    

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Finite element analysis of stress concentrations and failure criteria in composite plates with circular holes

Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 281-294 doi: 10.1007/s11465-014-0307-9

Abstract: Based up on the classical plate theory, the present finite element is a combination of a linear isoparametric

Keywords： laminated composite plates     stress concentration     geometric singularity     anisotropic effect    

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Eversible duoprism mechanism

Ruiming LI,Yan-An YAO

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2,   Pages 159-169 doi: 10.1007/s11465-016-0398-6

Abstract: Six inputs, including a redundant one, are required to overcome singularity and achieve an eversion motion

Keywords： duoprism     eversion motion     singularity     over-constrained    

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Self-motions of 3-RPS manipulators

Josef SCHADLBAUER, Manfred L. HUSTY, Stéphane CARO, Philippe WENGERY

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 62-69 doi: 10.1007/s11465-013-0366-3

Abstract:

Recently a complete kinematic description of the 3-RPS parallel manipulator was obtained using algebraic constraint equations. It turned out that the workspace splits into two components describing two kinematically different operation modes. In this paper the algebraic description is used to give a complete analysis of all possible self-motions of this manipulator in both operation modes. Furthermore it is shown that a transition from one operation mode into the other in a self-motion is possible.

Keywords： 3-RPS-manipulator     singularity     self-motion    

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Multifractal characteristics of cylindrical sludge drying

Weiyun WANG, Aimin LI,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 464-469 doi: 10.1007/s11783-009-0040-5

Abstract: This paper analyzes dewatered sludge drying using the multifractal theory.The parameters acquired were used to calculate the multifractal singularity spectrum and indicate the

Keywords： multifractal characteristic     multifractal singularity spectrum     sewage sludge drying    

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Analysis of Theory of Architecture

Gu Mengchao

Strategic Study of CAE 2007, Volume 9, Issue 11,   Pages 100-102

Abstract:

Starting with the analysis of the definition and concept of the theoryof architecture, the framework of architectural theory and the filling theory innovation, the authorgives his understanding on the framework of architectural theory with Chinese characteristics.

Keywords： theory of architecture     framework of architectural theory     starting point and finishing point ofarchitecturaltheory     innovation in architectural theory    

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Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 522-538 doi: 10.1007/s11708-018-0562-2

Abstract: This paper proposes the use of a signal detection theory (SDT), fuzzy detection theory (FDT), and chi-square

Keywords： thermostats     perceptions     beliefs     signal detection theory (SDT)     fuzzy signal detection theory (FSDT)     chi-square    

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An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 1-8

Abstract: study the properties and the refining laws of the information resources and to establish a unified theory

Keywords： information theory     knowledge theory     intelligence theory     cogmatics    

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An application of game theory in distributed collaborative decision making

Angran XIAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1,   Pages 85-101 doi: 10.1007/s11465-019-0523-4

Abstract: Hence, we postulate the use of principles from game theory to model the relationships between engineeringA product design and manufacturing scenario is introduced to demonstrate the efficacy of using game theory

Keywords： collaboration     distributed product realization     game theory     digital interface    

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Title Author Date Type Operation

The nonlinear singularity phenomenon of low frequency oscillation in power system

Ma Jinglan,Wang Wei,Wan Jingsheng,Zhang Yongli

Journal Article

Singularity loci of an orthogonal spherical two-degree-of-freedom parallel mechanism

Jialun YANG, Feng GAO,

Journal Article

Influence of kinematic redundancy on the singularity-free workspace of parallel kinematic machines

Jens KOTLARSKI, Bodo HEIMANN, Tobias ORTMAIER

Journal Article

Research on Bifurcation Property of Dike Rockfill of River Closure by End Dumping

He Changhai,Xiao Huanxiong,Hu Zhigen,Zhou Yihong

Journal Article

Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Journal Article

Kinematic, workspace and singularity analysis of a new parallel robot used in minimally invasive surgery

Alin STOICA, Doina PISLA, Szilaghyi ANDRAS, Bogdan GHERMAN, Bela-Zoltan GYURKA, Nicolae PLITEA

Journal Article

Singularity and workspace analysis of three isoconstrained parallel manipulators with schoenflies motion

Po-Chih LEE, Jyh-Jone LEE

Journal Article

Finite element analysis of stress concentrations and failure criteria in composite plates with circular holes

Abdelhak KHECHAI,Abdelouahab TATI,Abdelhamid GUETTALA

Journal Article

Eversible duoprism mechanism

Ruiming LI,Yan-An YAO

Journal Article

Self-motions of 3-RPS manipulators

Josef SCHADLBAUER, Manfred L. HUSTY, Stéphane CARO, Philippe WENGERY

Journal Article

Multifractal characteristics of cylindrical sludge drying

Weiyun WANG, Aimin LI,

Journal Article

Analysis of Theory of Architecture

Gu Mengchao

Journal Article

Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Journal Article

An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Journal Article

An application of game theory in distributed collaborative decision making

Angran XIAO

Journal Article