Results 51 to 60 of about 2,198,677 (243)

Geometric Error Modeling of 3-DOF Planar Parallel Manipulators Using Conformal Geometric Algebra

Machines
This paper proposes a geometrically intuitive error modeling method for planar parallel mechanisms (PPMs) based on conformal geometric algebra (CGA). First, the end point of each limb is determined through rotational transformations in geometric algebra.
Huijing Yao, Chenxin Tang, Xinxue Chai
doaj   +1 more source

Modeling of Systematic Errors and Precision Optimization Methods for Workpiece Clamping and Alignment System in Aeroengine Gearbox Automated Line Machining

Shanghai Jiaotong Daxue xuebao
In the upgrading and automation of aeroengine gearbox assembly line, the introduction of new equipment such as zero-point positioning systems and auxiliary alignment systems has significantly improved production efficiency.
DU Xueming, XIANG Yang, LIU Shun, JIN Sun
doaj   +1 more source

Modeling Error in Quantitative Macro-Comparative Research

Journal of World-Systems Research, 2015
Much quantitative macro-comparative research (QMCR) relies on a common set of published data sources to answer similar research questions using a limited number of statistical tools.
Salvatore J. Babones
doaj   +1 more source

High-Precision Monitoring Method for Bridge Deformation Measurement and Error Analysis Based on Terrestrial Laser Scanning

Remote Sensing
In bridge structure monitoring and evaluation, deformation data serve as a crucial basis for assessing structural conditions. Different from discrete monitoring points, spatially continuous deformation modes provide a comprehensive understanding of ...
Yin Zhou, Jinyu Zhu, Lidu Zhao, Guotao Hu, Jingzhou Xin, Hong Zhang, Jun Yang   +6 more
doaj   +1 more source

Radar Error Correlation Analysis Under the Simultaneous Observation of Double Targets

IEEE Access
Radar error is a significant factor restricting the detection accuracy of radar. Improving the detection accuracy of radar is crucial to accurate target localization in an ocean environment.
Yuxiang Zhou, Faxing Lu, Qiuyang Dai, Junfei Xu   +3 more
doaj   +1 more source

Kinematic modeling and error analysis of Delta robot considering parallelism error

International Journal of Advanced Robotic Systems, 2019
Motion accuracy is an important indicator to evaluate the performance of robots. The driven arm of the Delta robot is composed of a pair of parallelogram mechanisms.
Yu Li, Deyong Shang, Yue Liu
doaj   +1 more source

Surrogate-Based Bayesian Inverse Modeling of the Hydrological System: An Adaptive Approach Considering Surrogate Approximation Error

, 2020
Bayesian inverse modeling is important for a better understanding of hydrological processes. However, this approach can be computationally demanding, as it usually requires a large number of model evaluations.
Chen, Dingjiang, Wu, Laosheng, Zeng, Lingzao, Zhang, Jiangjiang, Zheng, Qiang   +4 more
core   +1 more source

Advances in Computer Numerical Control Geometric Error Compensation: Integrating AI and On-Machine Technologies for Ultra-Precision Manufacturing

Machines
Geometric inaccuracies in machine configuration and part specifications are a major source of errors in CNC machining. These discrepancies have long affected the quality of manufactured components and continue to be a key research area in academia and ...
Yassmin Seid Ahmed, Fred Lacerda Amorim
doaj   +1 more source

Ensemble Neural Networks for Modeling DEM Error

ISPRS International Journal of Geo-Information, 2019
Digital elevation models (DEMs) have become ubiquitous and remarkably effective in the field of earth sciences as a tool to characterize surface topography.
Chuyen Nguyen, Michael J. Starek, Philippe E. Tissot, Xiaopeng Cai, James Gibeaut   +4 more
doaj   +1 more source

Developing Model-Based Design Evaluation for Pipelined A/D Converters [PDF]

, 2012
This paper deals with a prospective approach of modeling, design evaluation and error determination applied to pipelined A/D converter architecture. In contrast with conventional ADC modeling algorithms targeted to extract the maximum ADC non-linearity ...
Hospodka, J., Martinek, P., Struhovsky, P., Subrt, O.   +3 more
core   +1 more source