Results 11 to 20 of about 156,630 (288)

Voltage Stability Constrained Optimal Power Flow for Unbalanced Distribution System Based on Semidefinite Programming

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
This paper proposes a voltage stability constrained optimal power flow (VSC-OPF) for an unbalanced distribution system with distributed generators (DGs) based on semidefinite programming (SDP).
Yanling Lin   +4 more
doaj   +1 more source

On the Kinematics of Robotic-assisted Minimally Invasive Surgery [PDF]

open access: yesModeling, Identification and Control, 2013
Minimally invasive surgery is characterized by the insertion of the surgical instruments into the human body through small insertion points called trocars, as opposed to open surgery which requires substantial cutting of skin and tissue to give the ...
Pål Johan From
doaj   +1 more source

Unscented Particle Filter for Online Total Image Jacobian Matrix Estimation in Robot Visual Servoing

open access: yesIEEE Access, 2019
The main purpose of visual servoing is to control the motion of a robot system based on visual information provided by one or more cameras. It is an important research topic in the robotics community.
Fasheng Wang   +4 more
doaj   +1 more source

On the false positives and false negatives of the Jacobian Matrix in kinematically redundant parallel mechanisms [PDF]

open access: yes, 2019
The Jacobian matrix is a highly popular tool for the control and performance analysis of closed-loop robots. Its usefulness in parallel mechanisms is certainly apparent, and its application to solve motion planning problems, or other higher level ...
Baron, Nicholas   +2 more
core   +1 more source

Effect of Wavelet Selection on Periodic Steady-State Analysis

open access: yesIEEE Access, 2020
This paper presents a study of the effect wavelet selection has on the density of the Jacobian matrix and nodal waveform coefficients of wavelet based periodic steady-state analysis of electrical circuits. For the presented case studies, it is shown that
Kris Fedick, Carlos Christoffersen
doaj   +1 more source

Irreducibility properties of Keller maps [PDF]

open access: yes, 2016
Jedrzejewicz showed that a polynomial map over a field of characteristic zero is invertible, if and only if the corresponding endomorphism maps irreducible polynomials to irreducible polynomials.
de Bondt, Michiel, Yan, Dan
core   +2 more sources

Research on fully-implicit numerical algorithm of two-fluid three-field two-phase flow model based on JFNK method

open access: yesHe jishu, 2022
BackgroundMost nuclear reactor safety analysis codes using the two-fluid three-field two-phase flow model are based on semi-implicit numerical algorithm. The stability of the numerical scheme is limited to the Courant value.
FAN Jie   +3 more
doaj   +1 more source

Topology Optimization of Spatially Compliant Mechanisms with an Isomorphic Matrix of a 3-UPC Type Parallel Prototype Manipulator

open access: yesMicromachines, 2018
A novel topology optimization approach is proposed in this paper for the design of three rotational degree-of-freedom (DOF) spatially compliant mechanisms, combining the Jacobian isomorphic mapping matrix with the solid isotropic material with ...
Dachang Zhu   +3 more
doaj   +1 more source

GPU-Based Sparse Power Flow Studies With Modified Newton’s Method

open access: yesIEEE Access, 2021
The Power system is getting larger and more complicated due to development of multiple energy supplies. Solving large-scale power flow equations efficiently plays an essential role in analysis of power system and optimizing their performance during ...
Lei Zeng   +2 more
doaj   +1 more source

Decoupling Multivariate Polynomials Using First-Order Information [PDF]

open access: yes, 2014
We present a method to decompose a set of multivariate real polynomials into linear combinations of univariate polynomials in linear forms of the input variables.
Dreesen, Philippe   +2 more
core   +1 more source

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