scholarly journals Mechanism with variable angle between axes of shafts.

2014 ◽  
Vol 2014 (1) ◽  
pp. 46-50
Author(s):  
Михаил Лустенков ◽  
Mikhail Lustenkov ◽  
Екатерина Фитцова ◽  
Ekaterina Fittsova
Keyword(s):  
Kinematic Analysis ◽  
Transmission Ratio ◽  
Variable Angle ◽  
Universal Joints

The design and the principle of the mechanism work, including a reducer and universal joints, are considered in this paper. The angle between the axes of the shafts can be changed during oper-ation. The mechanism works in a reducer mode when its housing is stopped. The kinematic analysis of the mechanism and the research of dependence of the transmission ratio on the angles between the axes of the shafts are given in the article.

Kinematic and Workspace Modelling of a 6-PUS Parallel Mechanism

2018 ◽  
Author(s):  
Jérôme Landuré ◽  
Clément Gosselin
Keyword(s):  
Kinematic Analysis ◽  
Parallel Mechanism ◽  
Inverse Kinematic ◽  
Degree Of Freedom ◽  
Accurate Description ◽  
Transmission Ratio ◽  
Inverse Kinematic Problem ◽  
Jacobian Matrices ◽  
Six Degree Of Freedom

This article presents the kinematic analysis of a six-degree-of-freedom six-legged parallel mechanism of the 6-PUS architecture. The inverse kinematic problem is recalled and the Jacobian matrices are derived. Then, an algorithm for the geometric determination of the workspace is presented, which yields a very fast and accurate description of the workspace of the mechanism. Singular boundaries and a transmission ratio index are then introduced and studied for a set of architectural parameters. The proposed analysis yields conceptual architectures whose properties can be adjusted to fit given applications.

A new approach to the kinematic analysis of universal joints

2010 ◽  
Vol 52 (5) ◽  
pp. 332-337
Author(s):  
Gültekin Karadere ◽  
Osman Kopmaz ◽  
Emin Güllü
Keyword(s):  
Kinematic Analysis ◽  
New Approach ◽  
Universal Joints

scholarly journals Joint Shaft Test Stand

2017 ◽  
Vol 15 (1) ◽  
pp. 11-14
Author(s):  
Jiří Pakosta ◽  
Gabriela Achtenová
Keyword(s):  
Constant Velocity ◽  
Signal Transmission ◽  
Test Stand ◽  
Input And Output ◽  
Variable Angle ◽  
Driving Speed ◽  
Constant Velocity Joints ◽  
Universal Joints

Abstract The article focuses on description of design of the test stand for shafts with universal joints and constant velocity joints. The shafts can be loaded by torque at specified speed of rotation, while retaining the possibility of setting a variable angle between input and output. All shafts are instrumented with contactless signal transmission. In addition, ventilator simulates the cooling derived from the driving speed.

scholarly journals Research and analysis of steering-by-wire system stability

2021 ◽  
Vol 2121 (1) ◽  
pp. 012028
Author(s):  
You Fu ◽  
Lizhu Zhang ◽  
Chuanbin Wei ◽  
Peng Tang
Keyword(s):  
Control Method ◽  
Basic Structure ◽  
Stability Control ◽  
System Stability ◽  
Transmission Ratio ◽  
Ratio Method ◽  
Basic Information ◽  
Variable Angle ◽  
Steer By Wire ◽  
Wire System

Abstract In this paper, the basic structure of steer-by-wire system is firstly introduced, and the steering stability of steer-by-wire system is summarized by means of stability control method and variable angle transmission ratio method. Finally, the unstudied direction of steer-by-wire system at this stage is summarized, and the intelligent steer-by-wire system is prospected, which provides basic information and ideas for the study of steering stability of steer-by-wire system.

Modeling of Nutation Drive with Rolling Teeth

2009 ◽  
Vol 16-19 ◽  
pp. 708-712 ◽  
Author(s):  
Guang Xin Wang ◽  
Tian Min Guan
Keyword(s):  
Kinematic Analysis ◽  
Tooth Profile ◽  
Bevel Gear ◽  
Transmission Ratio ◽  
Transformation Theory ◽  
Gear Teeth ◽  
Theoretical Profile ◽  
Rolling Elements ◽  
Minimum Number

According to the pair transformation theory on mechanism derivation, the internal bevel gear meshing pair of nutation drive is replaced by rolling elements. In this manner, gear teeth are eliminated and the problem of manufacturing the interval bevel gear is solved completely. The method to generate new tooth profiles of nutation drive is put forward. Using this method, a novel nutation drive is presented. This system is made with a minimum number of parts, and can remain constant transmission ratio. In this paper, the problems such as tooth profile synthesis and kinematic analysis of the mechanism are studied. The formulae for calculating transmission ratio of the reducer are developed and theoretical profile equations of the stator and the rotor are obtained.

Quantitative defect studies in semiconductor TEM samples prepared by low angle ion milling

1995 ◽  
Vol 53 ◽  
pp. 512-513
Author(s):  
L. Mulestagno ◽  
J.C. Holzer ◽  
P. Fraundorf
Keyword(s):  
Sample Preparation ◽  
Milling Time ◽  
High Density ◽  
Low Density ◽  
Ion Milling ◽  
High Quality ◽  
Variable Angle ◽  
Major Disadvantage ◽  
Induced Defects

Due to the wealth of information, both analytical and structural that can be obtained from it TEM always has been a favorite tool for the analysis of process-induced defects in semiconductor wafers. The only major disadvantage has always been, that the volume under study in the TEM is relatively small, making it difficult to locate low density defects, and sample preparation is a somewhat lengthy procedure. This problem has been somewhat alleviated by the availability of efficient low angle milling.Using a PIPS® variable angle ion -mill, manufactured by Gatan, we have been consistently obtaining planar specimens with a high quality thin area in excess of 5 × 104 μm2 in about half an hour (milling time), which has made it possible to locate defects at lower densities, or, for defects of relatively high density, obtain information which is statistically more significant (table 1).

Kinematic Approximations in TED and RHEED Analysis of Reconstructed Surfaces

1990 ◽  
Vol 48 (2) ◽  
pp. 396-397
Author(s):  
L. -M. Peng ◽  
M. J. Whelan
Keyword(s):  
Electron Diffraction ◽  
Kinematic Analysis ◽  
Incident Beam ◽  
High Energy ◽  
Energy Electron ◽  
Great Success ◽  
High Energy Electron ◽  
Kinematic Approximation ◽  
Reconstructed Surfaces

In recent years there has been a trend in the structure determination of reconstructed surfaces to use high energy electron diffraction techniques, and to employ a kinematic approximation in analyzing the intensities of surface superlattice reflections. Experimentally this is motivated by the great success of the determination of the dimer adatom stacking fault (DAS) structure of the Si(111) 7 × 7 reconstructed surface.While in the case of transmission electron diffraction (TED) the validity of the kinematic approximation has been examined by using multislice calculations for Si and certain incident beam directions, far less has been done in the reflection high energy electron diffraction (RHEED) case. In this paper we aim to provide a thorough Bloch wave analysis of the various diffraction processes involved, and to set criteria on the validity for the kinematic analysis of the intensities of the surface superlattice reflections.The validity of the kinematic analysis, being common to both the TED and RHEED case, relies primarily on two underlying observations, namely (l)the surface superlattice scattering in the selvedge is kinematically dominating, and (2)the superlattice diffracted beams are uncoupled from the fundamental diffracted beams within the bulk.

Kinematic analysis of locomotion following traumatic brain injury in rodents

2008 ◽  
Author(s):  
Connie E. Myerson ◽  
Eniko K. Toth ◽  
Joseph M. Wasserman ◽  
W.D. Dietrich ◽  
Edward J. Green
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Kinematic Analysis
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