Results 271 to 280 of about 3,458,432 (336)

Development of a postprocessor for head tilting-head rotation type five-axis machine tool with double limit rotation axis

International Journal of Advanced Manufacturing Technology, 2018
Fengjun Chen, Qingchun Tang, JunXiao Geng   +2 more
exaly   +2 more sources

Surgical Accuracy in Identifying the Elbow Rotation Axis on Fluoroscopic Images

Journal of Hand Surgery, 2014
Jimme Wiggers, K Mader, G J Streekstra
exaly   +2 more sources

Rotation axis calibration of a turntable using constrained global optimization

Optik, 2014
Zhisheng Zhang
exaly   +2 more sources

Rotation Axis Calibration of Laser Line Rotating-Scan System for 3D Reconstruction

International Conference on Awareness Science and Technology, 2020
The laser line rotating-scan system has been a popular method for 3D reconstruction. But the rotating axis of the scanner usually does not coincide with the camera origin point, which makes this technique a bit more complex.
Zhihao Zhu, Jian Yang, Xianglong Wang, Guanqi Qi, Chuang Wu, H. Fan, Lin Qi, Jun-Yu Dong   +7 more
semanticscholar   +1 more source

Machine-vision-guided rotation axis alignment for an optomechanical derotator

Optics and lasers in engineering, 2019
An image derotator is a device that can compensate the image blur caused by the rotation of an object. However, a key problem when using a derotator is to ensure the coincident alignment between the rotation axes of the derotator and measured object.
Yong-Kai Yin, Bettina Altmann, C. Pape, E. Reithmeier   +3 more
semanticscholar   +1 more source

Vibrations of a rotating membrane with unsteady rotations of the axis of rotation

Strength of Materials, 1990
A method and algorithm are developed for numerical calculation of the vibrations of a rotating circular membrane with a rigid central insert. The vibrations are caused by plane rotation of the rotation axis with a variable angular velocity. A system of differential equations is obtained to describe the motion of the membrane in relation to the stress ...
V. I. Gulyaev, A. A. Kirichuk, P. P. Lizunov, A. V. Mirchevskii   +3 more
openaire   +1 more source

The Determination of Rotation Axis in the Rotation Electron Diffraction Technique

Microscopy and Microanalysis, 2013
AbstractMethods to determine the rotation axis using the rotation electron diffraction technique are described. A combination of rotation axis tilt, beam tilt, and simulated experimental diffraction patterns with nonintegers zone axis has been used. Accurate knowledge of the crystallographic direction of the incident beam for deducing the excitation ...
Mika, Buxhuku, Vidar, Hansen, Peter, Oleynikov, Jon, Gjønnes   +3 more
openaire   +2 more sources

A new method for estimating the axis of rotation and the center of rotation

Journal of Biomechanics, 1999
A new method is presented for estimating the parameters of two different models of a joint. The two models are: (1) A rotational joint with a fixed axis of rotation, also referred to as a hinge joint and (2) a ball and socket model, corresponding to a spherical joint. Given the motion of a set of markers, it is shown how the parameters can be estimated,
K, Halvorsen, M, Lesser, A, Lundberg
openaire   +2 more sources

An Axis of Rotation Analyser

1974
The principal motions in most cutting operations are rotations: mainly the rotation of the workpiece in turning, cylindrical grinding, etc., and the rotation of the tool in boring, milling, etc.
P. Vanherck, J. Peters
openaire   +1 more source

Optical measurements of angle and axis of rotation

Optics Letters, 2008
A carousel interferometer is designed to find the unknown angle and axis of rotation simultaneously. A set consisting of a compensator glass plate and a right-angle prism is placed in each of the two arms of the interferometer while located at the same rotational stage.
Ghazanfar, Hussain, Masroor, Ikram
openaire   +2 more sources