scholarly journals Proposal of Analysis Accuracy Improvement Method in Modified Williamson-Hall Method

2020 ◽  
Vol 69 (9) ◽  
pp. 661-665
Author(s):  
Setsuo TAKAKI ◽  
Takuro MASUMURA ◽  
Toshihiro TSUCHIYAMA
Keyword(s):  
Accuracy Improvement ◽  
Improvement Method ◽  
Hall Method

Output Voltage Accuracy Improvement Method for Inverter to which Asynchronous PWM Applied

2019 ◽  
Vol 139 (3) ◽  
pp. 296-305
Author(s):  
Shinichi Furutani ◽  
Akira Satake
Keyword(s):  
Output Voltage ◽  
Accuracy Improvement ◽  
Improvement Method

scholarly journals Improving the Strapdown Airborne Vector Gravimetry by a Backward Inertial Navigation Algorithm

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4432
Author(s):  
Minghao Wang ◽  
Juliang Cao ◽  
Shaokun Cai ◽  
Meiping Wu ◽  
Kaidong Zhang ◽  
...  
Keyword(s):  
Field Data ◽  
Flight Test ◽  
Attitude Measurement ◽  
Integrated Navigation ◽  
Accuracy Improvement ◽  
Forward Algorithm ◽  
Navigation Algorithm ◽  
Improvement Method ◽  
Vector Gravimetry ◽  
No Sensor

Strapdown airborne gravimetry is an efficient way to obtain gravity field data. A new method has been developed to improve the accuracy of airborne vector gravimetry. The method introduces a backward strapdown navigation algorithm into the strapdown gravimetry, which is the reverse process of forward algorithm. Compared with the forward algorithm, the backward algorithm has the same performance in the condition of no sensor error, but has different error characteristics in actual conditions. The differences of the two algorithms in the strapdown gravimetry data processing are presented by simulations, which show that the two algorithms have different performance in the horizontal attitude measurement and convergence of integrated navigation filter. On the basis of detailed analysis, the procedures of accuracy improvement method are presented. The result of this method is very promising when applying to an actual flight test carried out by a SGA-WZ02 strapdown gravimeter. After applying the proposed method, the repeatability of two gravity disturbance horizontal components were 1.83 mGal and 1.80 mGal under the resolution of 6 km, which validate the effectiveness of the method. Furthermore, the wavenumber correlation filter is also discussed as an alternative data fusion method.

A40 Proposal of accuracy improvement method for collet chuck considering collet orientation

2008 ◽  
Vol 2008.7 (0) ◽  
pp. 229-230
Author(s):  
Haruhisa SAKAMOTO ◽  
Teruhisa TANAKA ◽  
Shinji SHIMIZU ◽  
Norihiro TAKAHASHI
Keyword(s):  
Accuracy Improvement ◽  
Improvement Method

The Method for the Accuracy Improvement of STL Offset Model Based on Vertex Offset

2011 ◽  
Vol 308-310 ◽  
pp. 1600-1603
Author(s):  
Hu Zhu ◽  
Nan Li ◽  
Zhi Jun Liu
Keyword(s):  
Center Of Gravity ◽  
Accuracy Improvement ◽  
Model Based ◽  
Surface Subdivision ◽  
Improvement Method ◽  
Subdivision Algorithm ◽  
Normal Vectors

On the basis of the analysis for the reason that causes the errors of the vertex offset, the accuracy improvement method for the STL offset model which was generated by the vertex offset algorithm was proposed by using the surface subdivision algorithm based on the center of gravity on triangular facets. The offset point of the center of gravity was generated by offset the center of gravity along the normal vectors of the triangular facets on which the center of gravity is located, and the new triangular facets are formed by connecting the offset points of the center of gravity and the offset vertexes of the triangular facets so that the more accurate offset model to be built. The case study shows that the proposed algorithm has higher accuracy than the existing vertex offset algorithm.

An accuracy improvement method for the topology measurement of an atomic force microscope using a 2D wavelet transform

2018 ◽  
Vol 188 ◽  
pp. 70-76
Author(s):  
Yeomin Yoon ◽  
Suwoo Noh ◽  
Jiseong Jeong ◽  
Kyihwan Park
Keyword(s):  
Wavelet Transform ◽  
Atomic Force Microscope ◽  
Accuracy Improvement ◽  
Atomic Force ◽  
Improvement Method

scholarly journals Positioning accuracy improvement method of industrial robot based on laser tracking measurement

2021 ◽  
Vol 18 ◽  
pp. 100235
Author(s):  
Hongfei Zu ◽  
Xuwen Chen ◽  
Zhangwei Chen ◽  
Zhirong Wang ◽  
Xiang Zhang
Keyword(s):  
Industrial Robot ◽  
Accuracy Improvement ◽  
Positioning Accuracy ◽  
Laser Tracking ◽  
Improvement Method ◽  
Tracking Measurement
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