scholarly journals Modeling of Pipeline Leakage Detection and Prewarning System for Locating Error Analysis Based on Jones Matrix

2009 ◽  
Vol 52 (3) ◽  
pp. 114-119 ◽  
Author(s):  
Hao Feng ◽  
Lin Zhu ◽  
Shijiu Jin ◽  
Yan Zhou ◽  
Zhoumo Zeng ◽  
...  
Keyword(s):  
Error Analysis ◽  
Jones Matrix ◽  
Leakage Detection ◽  
Locating Error

Locating Error Analysis in Pipeline Leakage Detection and Prewarning System Based on Modeling Using Jones Matrix

2009 ◽  
Vol 29 (3) ◽  
pp. 723-727 ◽  
Author(s):  
封皓 Feng Hao ◽  
靳世久 Jin Shijiu ◽  
曾周末 Zeng Zhoumo ◽  
周琰 Zhou Yan ◽  
曲志刚 Qu Zhigang
Keyword(s):  
Error Analysis ◽  
Jones Matrix ◽  
Leakage Detection ◽  
Locating Error

Error analysis of homodyne multi-pass interferometer with Jones matrix

2013 ◽  
Author(s):  
Wei Li ◽  
Sitian Gao ◽  
Mingzhen Lu ◽  
Yushu Shi
Keyword(s):  
Error Analysis ◽  
Jones Matrix

A Kinematic Approach to Locating Error Analysis for Fixture Design

2010 ◽  
Vol 431-432 ◽  
pp. 74-77 ◽  
Author(s):  
Guo Hua Qin ◽  
Dong Lu ◽  
Shi Ping Sun ◽  
Hai Chao Ye
Keyword(s):  
Error Analysis ◽  
Kinematic Model ◽  
Angular Dimension ◽  
Fixture Design ◽  
Locating Error ◽  
Composition Law ◽  
Accurate Position ◽  
Source Errors ◽  
First Time ◽  
The Relationship

In order that the required manufacturing processes can be carried out, fixtures are developed to locate and hold a workpiece firmly in the accurate position. However, source errors of fixtures can change the accurate position and in turn, cause the locating error. It follows that the evaluation of locating error is important to fixture design. Therefore, a general approach to the locating error analysis is formulated for the first time. Firstly, a kinematic model and its algorithm of the locating error are proposed to analyzing the linear dimension based on the velocity composition law of particle movement. In addition, according to the relationship between the linear velocity and angular velocity, another kinematic model and its algorithm of the locating error are also formulated to verifying the angular dimension.

Locating error analysis and tolerance assignment for computer-aided fixture design

2001 ◽  
Vol 39 (15) ◽  
pp. 3529-3545 ◽  
Author(s):  
Y. Rong ◽  
W. Hu ◽  
Y. Kang ◽  
Y. Zhang ◽  
David W. Yen
Keyword(s):  
Error Analysis ◽  
Fixture Design ◽  
Locating Error ◽  
Computer Aided ◽  
Tolerance Assignment

Locating Error Analysis of Dimension and Symmetry of the Keyseat on Shaft and Jig Design with Precision

2012 ◽  
Vol 522 ◽  
pp. 388-395
Author(s):  
Kai Feng Yuan
Keyword(s):  
Error Analysis ◽  
Influencing Factors ◽  
Clamping Force ◽  
Positioning Errors ◽  
Locating Error ◽  
Milling Operation ◽  
Supporting Plate

Keyseat on the shaft is an important geometry and is increasingly required for the dimension and symmetry with strict tolerance. However, the routine milling operation for the keyseat is done with the shaft located on V block, with relatively low accuracy. In the current study, based on analysis of the influencing factors of the locating errors for three types of design, a special jig is designed that mey supply high locating accuracy with ease in operation. The jig is composed of the base, assembly of position parts, supporting plate and V block, linkage-clamping mechanism. Positioning errors and clamping force are insighted. Thus, theoretically-zero-locating error jig is created with efficiency and ease in operation.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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