Error analysis and compensation for the volumetric errors of a vertical machining centre using a hemispherical helix ball bar test

2004 ◽  
Vol 23 (7-8) ◽  
pp. 495-500 ◽  
Author(s):  
S.-H. Yang ◽  
K.-H. Kim ◽  
Y. K. Park ◽  
S.-G. Lee
Keyword(s):  
Error Analysis ◽  
Volumetric Errors ◽  
Ball Bar ◽  
Bar Test

Error analysis for sampling of slurries: volumetric errors

1989 ◽  
Vol 4 (5) ◽  
pp. 423 ◽  
Author(s):  
James A. Holcombe ◽  
Vahid Majidi
Keyword(s):  
Error Analysis ◽  
Volumetric Errors

A Ball-Bar Based Error Measurement Method for a RRTTT-Type Five-Axis Machine Tool

2010 ◽  
Vol 126-128 ◽  
pp. 785-790 ◽  
Author(s):  
Shih Ming Wang ◽  
Han Jen Yu ◽  
Da Fan Chen
Keyword(s):  
Machine Tools ◽  
Measurement Method ◽  
Degrees Of Freedom ◽  
High Efficiency ◽  
Low Cost ◽  
Measurement Methods ◽  
Error Measurement ◽  
Volumetric Errors ◽  
Ball Bar ◽  
Five Axis

Measurement method using telescoping ball-bar that can directly determine the volumetric errors of three main types of five-axis machine tools was developed. Adopting Single Socket method, and the method following the defined two-step measurements sequence and incorporating with derived error models, can quickly determine the five degrees-of-freedom (DOF) volumetric errors of five-axis machine tools. Comparing to most of the current used measurement methods, the proposed method provides the advantages of low cost, high efficiency, easy setup, and high accuracy.

scholarly journals Error Analysis of a Kind of 3D Laser Ball Bar

2019 ◽  
Vol 627 ◽  
pp. 012014
Author(s):  
Liang Xu ◽  
Yuchen Tian ◽  
Zhifeng Lou ◽  
Fan Kuangchao ◽  
Liding Wang ◽  
...  
Keyword(s):  
Error Analysis ◽  
Ball Bar

scholarly journals Development and Error Analysis of 3D Laser Tracking Ball Bar

2020 ◽  
Author(s):  
Ying zhi Zhang ◽  
Gong chang Ren ◽  
Hai tao Li
Keyword(s):  
Error Analysis ◽  
Laser Tracking ◽  
Ball Bar

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.

Error Analysis in Neuropsychological Assessment of Verbal Memory and Learning

1995 ◽  
Vol 11 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Dietmar Heubrock
Keyword(s):  
Error Analysis ◽  
Verbal Memory ◽  
Verbal Learning ◽  
Learning Disorders ◽  
Memory And Learning ◽  
Auditory Verbal Learning Test ◽  
Additional Information ◽  
Auditory Verbal Learning ◽  
Accurate Picture ◽  
Learning Test

Performance on a German version of the Rey Auditory-Verbal Learning Test (AVLT) was investigated for 64 juvenile patients who were subdivided in 6 clinical groups. In addition to standard evaluation of AVLT protocols which is usually confined to items recalled correctly, an error analysis was performed. Differentiating between total errors (TE), repetition errors (RE), and misnamings (ME), substantial differences between clinical groups could be demonstrated. It is argued that error analysis of verbal memory and learning enriches the understanding of neuropsychological syndromes, and provides additional information for diagnostic and clinical use. Thus, it is possible to gain a more accurate picture so that patients can be appropriately retrained, and research into the functional causes of memory and learning disorders can be intensified.

Reduced model error analysis “application to synchronous machines"

1994 ◽  
Vol 4 (10) ◽  
pp. 1999-2012 ◽  
Author(s):  
Nabil Derbel ◽  
Mohamed B.A. Kamoun ◽  
Michel Poloujadoff
Keyword(s):  
Error Analysis ◽  
Model Error ◽  
Synchronous Machines ◽  
Reduced Model ◽  
Analysis Application
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