Ultra-High-Accuracy Visual Marker for Indoor Precise Positioning

2020 ◽  
Author(s):  
Hideyuki Tanaka
Keyword(s):  
High Accuracy ◽  
Precise Positioning ◽  
Visual Marker

scholarly journals Real Time Trajectory Correction System Of Optical Head In Laser Welding

2015 ◽  
Vol 9 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Wojciech Cieszyński ◽  
Michał Zięba ◽  
Jacek Reiner
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Real Time ◽  
Laser Processing ◽  
High Accuracy ◽  
Precise Positioning ◽  
Optical Head ◽  
Welding Technology ◽  
Trajectory Correction ◽  
Correction System

Abstract Application of laser welding technology requires that the laser beam is guided through the whole length of the joint with sufficiently high accuracy. This paper describes result of research on development of optomechatronic system that allows for the precise positioning of the laser head’s TCP point on the edge of welded elements during laser processing. The developed system allows for compensation of workpiece’s fixture inaccuracies, precast distortions and workpiece deformations occurring during the process.

scholarly journals Functional Design of a 6-DOF Platform for Micro-Positioning

Robotics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 99
Author(s):  
Matteo-Claudio Palpacelli ◽  
Luca Carbonari ◽  
Giacomo Palmieri ◽  
Fabio D’Anca ◽  
Ettore Landini ◽  
...  
Keyword(s):  
Kinematic Model ◽  
High Accuracy ◽  
Functional Design ◽  
Spatial Motion ◽  
Precise Positioning ◽  
Singular Configurations ◽  
Physical Prototype ◽  
Parallel Kinematic ◽  
Parallel Platform ◽  
Accuracy And Repeatability

Parallel kinematic machines (PKMs) have demonstrated their potential in many applications when high stiffness and accuracy are needed, even at micro- and nanoscales. The present paper is focused on the functional design of a parallel platform providing high accuracy and repeatability in full spatial motion. The hexaglide architecture with 6-PSS kinematics was demonstrated as the best solution according to the specifications provided by an important Italian company active in the field of micro-positioning, particularly in vacuum applications. All the steps needed to prove the applicability of such kinematics at the microscale and their inherent advantages are presented. First, the kinematic model of the manipulator based on the study’s parametrization is provided. A global conditioning index (GCI) is proposed in order to optimize the kinetostatic performance of the robot, so that precise positioning in the required platform workspace is guaranteed avoiding singular configurations. Some numerical simulations demonstrate the effectiveness of the study. Finally, some details about the realization of a physical prototype are given.

scholarly journals Combined system of precise positioning of pilotless helicopter-type aircraft in the landing area

2019 ◽  
Vol 30 ◽  
pp. 03004
Author(s):  
Andrey Antonov ◽  
Andrey Zubyuk ◽  
Mikhail Kuznetsov ◽  
Ilya Obukhov ◽  
Elizaveta Smirnova ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
High Accuracy ◽  
Navigation Systems ◽  
Combined System ◽  
Precise Positioning ◽  
Special Software ◽  
Relative Coordinates ◽  
Aerial Vehicle ◽  
Global Navigation ◽  
Global Navigation Systems

On-board equipment, ground equipment, and special software have been developed and tested that makes it possible to determine with high accuracy the relative coordinates of a helicopter-type unmanned aerial vehicle relative to a quick deployment runway in the absence of signals from global navigation systems.

High Accuracy Positioning for Submarine Pipelines

1976 ◽  
Vol 29 (2) ◽  
pp. 182-193
Author(s):  
W. F. Broadwood
Keyword(s):  
North Sea ◽  
High Accuracy ◽  
Precise Positioning ◽  
Oil Companies ◽  
The Many

Among the many problems arising from the exploitation of North Sea oil is that of finding practicable landfalls for the proposed pipelines. The oil companies have been confronted with some of the most difficult landfalls yet experienced where the requirement for precise positioning has been paramount. This paper, which was presented at a meeting of the Institute held at the Southampton School of Navigation on 23 October 1975, outlines the problems encountered and the methods used to overcome them.

A New 1,000 kV Electron Microscope

1967 ◽  
Vol 25 ◽  
pp. 260-261
Author(s):  
M. Nishigaki ◽  
S. Katagiri ◽  
H. Kimura ◽  
B. Tadano
Keyword(s):  
Electron Microscope ◽  
High Voltage ◽  
Basic Research ◽  
Chromatic Aberration ◽  
High Accuracy ◽  
Biological Specimen ◽  
Voltage Electron ◽  
High Voltage Electron Microscope ◽  
High Voltage Electron

The high voltage electron microscope has many advantageous features in comparison with the ordinary electron microscope. They are a higher penetrating efficiency of the electron, low chromatic aberration, high accuracy of the selected area diffraction and so on. Thus, the high voltage electron microscope becomes an indispensable instrument for the metallurgical, polymer and biological specimen studies. The application of the instrument involves today not only basic research but routine survey in the various fields. Particularly for the latter purpose, the performance, maintenance and reliability of the microscope should be same as those of commercial ones. The authors completed a 500 kV electron microscope in 1964 and a 1,000 kV one in 1966 taking these points into consideration. The construction of our 1,000 kV electron microscope is described below.

Sign in / Sign up

Export Citation Format

Share Document