High precision synchronous detection method for multi-gas using the least square fitting

2020 ◽  
Author(s):  
Tingting Zhang ◽  
Jie Hu ◽  
Yubin Wei ◽  
Yanfang Li ◽  
Zhaowei Wang ◽  
...  
Keyword(s):  
High Precision ◽  
Detection Method ◽  
Least Square ◽  
Synchronous Detection ◽  
Least Square Fitting

scholarly journals High Precision Synchronous Detection Method for Multi-gas detection using a Single Laser

2018 ◽  
Vol 1065 ◽  
pp. 252013
Author(s):  
Tingting Zhang ◽  
Tao Jiang ◽  
Yanong Ning ◽  
Jie Hu ◽  
Tongyu Liu ◽  
...  
Keyword(s):  
High Precision ◽  
Detection Method ◽  
Gas Detection ◽  
Synchronous Detection ◽  
Single Laser

A Welding Gun Height Detection Method in Compulsively Short Circuiting Transfer Mode of Rotational Arc GMAW

2011 ◽  
Vol 418-420 ◽  
pp. 1102-1106
Author(s):  
Yan Feng Gao ◽  
Jian Hua Xiao
Keyword(s):  
Detection Method ◽  
Welding Current ◽  
Least Square ◽  
Three Dimensions ◽  
Least Square Fitting ◽  
Average Value ◽  
Transfer Mode ◽  
Fitting Method ◽  
Novel Method ◽  
Least Square Fitting Method

The characteristics of welding current in rotational arc GMAW were analyzed in this paper. It was found that the compulsively short circuiting transfer would take place when the electrode rotating to the sides of V groove. During the period of short circuiting transfer, the welding currents would sharply increase, so as to affect the average value of welding current in one rotational cycle. A novel method was proposed to detect the height of welding gun in this paper. The method use of least-square fitting method to fit the welding currents into a plane in three dimensions, and then through compute the distance between origin of coordinates and the plane to detect the height of welding gun. In the last, the validity of the method was proved through experiments.

ESTIMATING SURFACE NORMALS IN NOISY POINT CLOUD DATA

2004 ◽  
Vol 14 (04n05) ◽  
pp. 261-276 ◽  
Author(s):  
NILOY J. MITRA ◽  
AN NGUYEN ◽  
LEONIDAS GUIBAS
Keyword(s):  
Point Cloud ◽  
Smooth Surface ◽  
Smooth Curve ◽  
Local Information ◽  
Least Square ◽  
Neighborhood Size ◽  
Point Cloud Data ◽  
Cloud Data ◽  
Normal Estimation ◽  
Least Square Fitting

In this paper we describe and analyze a method based on local least square fitting for estimating the normals at all sample points of a point cloud data (PCD) set, in the presence of noise. We study the effects of neighborhood size, curvature, sampling density, and noise on the normal estimation when the PCD is sampled from a smooth curve in ℝ2or a smooth surface in ℝ3, and noise is added. The analysis allows us to find the optimal neighborhood size using other local information from the PCD. Experimental results are also provided.

scholarly journals COMPARING TWO DIFFERENT MODES OF MECHANICAL VENTILATION BY THE LEAST SQUARE FITTING METHOD: NAVA VERSUS PSV

2015 ◽  
Vol 3 (Suppl 1) ◽  
pp. A319
Author(s):  
S Spadaro ◽  
S Grasso ◽  
V Cricca ◽  
F Dalla Corte ◽  
R Di Mussi ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Least Square ◽  
Least Square Fitting ◽  
Fitting Method ◽  
Least Square Fitting Method

High-Precision Atmospheric Disturbance Detection Method for Moving Objects

2021 ◽  
Vol 41 (2) ◽  
pp. 0228002
Author(s):  
张月 Zhang Yue ◽  
王旭 Wang Xu ◽  
苏云 Su Yun ◽  
张学敏 Zhang Xuemin ◽  
邬志强 Wu Zhiqiang ◽  
...  
Keyword(s):  
High Precision ◽  
Moving Objects ◽  
Detection Method ◽  
Atmospheric Disturbance ◽  
Disturbance Detection

High precision detection method of safety helmet based on convolution neural network

2021 ◽  
Vol 36 (7) ◽  
pp. 1018-1026
Author(s):  
Tian-yu LI ◽  
◽  
Dong LI ◽  
Ming-ju CHEN ◽  
Hao WU ◽  
...  
Keyword(s):  
Neural Network ◽  
High Precision ◽  
Detection Method ◽  
Convolution Neural Network

scholarly journals Improved High Precision Aircraft Target Detection Method of YOLT

2021 ◽  
Vol 1955 (1) ◽  
pp. 012028
Author(s):  
Jiaxing Mao ◽  
Xinyu Zhang ◽  
Yang Ji ◽  
Zhen Zhang ◽  
Zihao Guo
Keyword(s):  
Target Detection ◽  
High Precision ◽  
Detection Method
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