Positional Accuracy Analysis of the Polishing Robot Based on Product-of-exponential Formulas

2016 ◽  
Keyword(s):  
Accuracy Analysis ◽  
Positional Accuracy

scholarly journals Position Accuracy Analysis on Disc Storing Mechanism for Benthic Drill

2014 ◽  
Vol 8 (1) ◽  
pp. 382-386
Author(s):  
Y. Guo ◽  
Y. P. Jin ◽  
M. Jiang ◽  
B. W. Luo
Keyword(s):  
Analytical Formula ◽  
Mathematic Model ◽  
Hydraulic Cylinder ◽  
Positional Error ◽  
Accuracy Analysis ◽  
Positional Accuracy ◽  
Positional Analysis ◽  
Cylinder Length ◽  
Dimensional Parameters ◽  
Nonlinear Iteration

The positional accuracy of disc storing mechanism for benthic drill is the guarantee of long hole coring in deep sea. Aiming the lack of positional accuracy analysis on disc storing mechanism, the mathematic model of the positional accuracy for disc storing mechanism is presented by using complex vector and matrix analyzing method. The analytical formula of crank rotation positional accuracy is acquired through rotation positional analysis of crank in disc storing mechanism driven by hydraulic cylinder. Adopting numerical nonlinear iteration solution method of Newton-Simpson, the variation rule of rotation positional error for disc storing mechanism to cylinder length is acquired, which supports an important theory, leading to tolerance design for dimensional parameters of disc storing mechanism.

Positional Accuracy Analysis of Satellite Imagery by Circular Statistics

2010 ◽  
Vol 76 (11) ◽  
pp. 1275-1286 ◽  
Author(s):  
A. Cuartero ◽  
A.M. Felicísimo ◽  
M.E. Polo ◽  
A. Caro ◽  
P.G. Rodríguez
Keyword(s):  
Satellite Imagery ◽  
Circular Statistics ◽  
Accuracy Analysis ◽  
Positional Accuracy

Accuracy assessment and performance analysis of raster to vector conversions on LULC data – India

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Prafullata Kiran Auradkar ◽  
Atharva Raykar ◽  
Ishitha Agarwal ◽  
Dinkar Sitaram ◽  
Manavalan R.
Keyword(s):  
Open Source ◽  
Real World ◽  
Spatial Data ◽  
Complexity Analysis ◽  
Accuracy Analysis ◽  
Positional Accuracy ◽  
Raster Data ◽  
Content Type ◽  
System Resource ◽  
Shape Complexity

Purpose The purpose of this paper is to convert real-world raster data into vector format and evaluate loss of accuracy in the conversion process. Open-source Geographic Information System (GIS) is used in this process and system resource utilizations were measured for conversion and accuracy analysis methods. Shape complexity attributes were analyzed in co-relation to the observed conversion errors. Design/methodology/approach The paper empirically evaluated the challenges and overheads involved in the format conversion algorithms available in open-source GIS with real-world land use and land cover (LULC) map data of India. Across the different LULC categories, geometric errors of varying density were observed in Quantum GIS (QGIS) algorithm. Area extents of original raster data were compared to the vector forms and the shape attributes such as average number of vertices and shape irregularity were evaluated to explore the possible correlation. Findings The results indicate that Geographic Resources Analysis Support System provides near error-free conversion algorithm. At the same time, the overall time taken for the conversion and the system resource utilizations were optimum as compared to the QGIS algorithm. Higher vector file sizes were generalized and accuracy loss was tested. Research limitations/implications Complete shape complexity analysis could not be achieved, as the weight factor for the irregularity of the shapes is to be varied based on the demography as well as on the LULC category. Practical implications Because of the higher system resource requirements of topological checker tool, positional accuracy checks for the converted objects could not be completed. Originality/value This paper addresses the need of accuracy analysis of real-world spatial data conversions from raster to vector format along with experimental setups challenges and impact of shape complexity.

ACCURACY ANALYSIS OF DIRECT INFRARED TEMPERATURE MEASUREMENTS OF TWO-PHASE CONFINED FLOWS

2018 ◽  
Author(s):  
Andrea Catarsi ◽  
Davide Fioriti ◽  
Mauro Mameli ◽  
Sauro Filippeschi ◽  
Paolo Di Marco
Keyword(s):  
Temperature Measurements ◽  
Accuracy Analysis ◽  
Two Phase ◽  
Confined Flows
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