Results 101 to 110 of about 156,630 (288)
Jixie chuandong, 2013 On the basis of inverse position solution,the statics property of a novel parallel mechanical leg is analyzed,the mechanical leg force Jacobian matrix is deduced by using vector method,and the Jacobian condit ion number is defined as statics performance ...
计时鸣, 李景敏, 李研彪, 刘毅
doaj
Multimodal Imaging Investigation of the Dentato‐Thalamo‐Cortical Pathway in Friedreich's Ataxia
Movement Disorders, EarlyView.Abstract Background Friedreich's ataxia (FRDA) is a spinocerebellar neurodegenerative disorder. The dentato‐thalamo‐cortical (DTC) pathway, an important cerebellar output involved in motor control, plays a crucial role in the neural mechanisms underlying ataxia symptoms in FRDA.
Yinghua Jing +22 more
wiley +1 more source
Configuration control of seven-degree-of-freedom arms [PDF]
A seven degree of freedom robot arm with a six degree of freedom end effector is controlled by a processor employing a 6 by 7 Jacobian matrix for defining location and orientation of the end effector in terms of the rotation angles of the joints, a 1 (or
Lee, Thomas S. +2 more
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Mathematical Methods in the Applied Sciences, EarlyView.We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés +2 more
wiley +1 more source
Machine Tool Design Optimization of High Resolution Parallel Hexapod in Cartesian Workspace [PDF]
International Journal of Advanced Design and Manufacturing Technology, 2011 In the research, six degrees of freedom Hexapod parallel machine tool is studied and investigated. Jacobian matrix is developed by cinematic relations differentiation and using weighted coefficient method, dimensional analysis operation is carried out on
Mir Amin Hosseini +1 more
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Analysis of a Mathematical Model of Marital Satisfaction
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT A large number of marriages end in divorce. In this paper, we present a model for the emotional state of a couple based on bilinear ordinary differential equations. We study the effect of changes of each individual's self‐emotional state on the couple's state.
Benito Chen‐Charpentier +2 more
wiley +1 more source
The Analysis on the Singularity of a 2UPS-UPR Parallel Machine Tool
MATEC Web of Conferences, 2015 This paper deals with the analysis on the singularity of a 2UPS-UPR parallel machine tool newly designed by Northeastern University. On the basis of establishing kinematics equations, the Jacobian matrix of the parallel machine tool and the shape of the ...
Zhao Liang, Guo Jianye, Li Xiaohong
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Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We study eigenvalue problems for the de Rham complex on varying three‐dimensional domains. Our analysis includes the Helmholtz equation as well as the Maxwell system with mixed boundary conditions and non‐constant coefficients. We provide Hadamard‐type formulas for the shape derivatives under weak regularity assumptions on the domain and its ...
Pier Domenico Lamberti +2 more
wiley +1 more source
A numerical method for forward kinematics of general Stewart manipulator using natural coordinates
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019 In this paper, a numerical method for forward kinematics of general Stewart manipulator using natural coordinates is presented. The kinematic equations are in quadratic forms and the corresponding Jacobian matrix is a linear function of coordinates ...
Ruobing WANG +4 more
doaj +1 more source
Chapter 5: Matrix Factorizations and Jacobians
, 2007 Contents 5.1. Matrix Factorizations 5.2.
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