scholarly journals Improved study on position measurement system for linear motor applied in electromagnetic launch system

2019 ◽  
Vol 3 (2) ◽  
pp. 216-220
Author(s):  
Wanzhi Rui ◽  
Mingjin Xu ◽  
Penghui Guo ◽  
Jin Xu
Keyword(s):  
Measurement System ◽  
Linear Motor ◽  
Position Measurement ◽  
Electromagnetic Launch

Underwater visual position measurement system for high-accuracy beam installation

Optik ◽  
2016 ◽  
Vol 127 (8) ◽  
pp. 3964-3968 ◽  
Author(s):  
Yongming Bian ◽  
Xiaojun Fang ◽  
Meng Yang ◽  
Jixiang Yang
Keyword(s):  
Measurement System ◽  
High Accuracy ◽  
Position Measurement

An Acoustic System for Pipeline Profile Measurement

1983 ◽  
Vol 105 (4) ◽  
pp. 475-479
Author(s):  
H. Van Calcar
Keyword(s):  
Measurement Technique ◽  
Measurement System ◽  
Performance Enhancement ◽  
Three Dimensional ◽  
Profile Measurement ◽  
Baseline Measurement ◽  
Acoustic System ◽  
Position Measurement ◽  
Long Baseline ◽  
Hardware Configuration

This paper presents an acoustic position measurement system used for precise three-dimensional flowline profile measurement. The system measures several points along the flowline using the long-baseline measurement technique and augments this measurement with depth telemetry repeaters to maintain elevation accuracy throughout the changing installation geometry. The paper discusses both the measurement system and the performance enhancement features. The paper concludes with a discussion of the hardware configuration and the accuracy that can be expected when the technique is extended into deeper operating areas.

Machine vision-based sensing for helicopter flight control

Robotica ◽  
2000 ◽  
Vol 18 (3) ◽  
pp. 299-303 ◽  
Author(s):  
Carl-Henrik Oertel
Keyword(s):  
Machine Vision ◽  
Measurement System ◽  
Flight Control ◽  
A Priori ◽  
Image Data ◽  
Two Dimensional ◽  
Position Measurement ◽  
Additional Information ◽  
Helicopter Flight ◽  
Template Tracking

Machine vision-based sensing enables automatic hover stabilization of helicopters. The evaluation of image data, which is produced by a camera looking straight to the ground, results in a drift free autonomous on-board position measurement system. No additional information about the appearance of the scenery seen by the camera (e.g. landmarks) is needed. The technique being applied is a combination of the 4D-approach with two dimensional template tracking of a priori unknown features.

A Self-Calibration Method for Robotic Measurement System

1999 ◽  
Author(s):  
Chunhe Gong ◽  
Jingxia Yuan ◽  
Jun Ni
Keyword(s):  
Coordinate System ◽  
Measurement System ◽  
Calibration Method ◽  
Position Measurement ◽  
Robot Calibration ◽  
Robot System ◽  
Self Calibration ◽  
World Coordinate System ◽  
Robot Accuracy ◽  
Calibration Methods

Abstract Robot calibration plays an increasingly important role in manufacturing. For robot calibration on the manufacturing floor, it is desirable that the calibration technique be easy and convenient to implement. This paper presents a new self-calibration method to calibrate and compensate for robot system kinematic errors. Compared with the traditional calibration methods, this calibration method has several unique features. First, it is not necessary to apply an external measurement system to measure the robot end-effector position for the purpose of kinematic identification since the robot measurement system has a sensor as its integral part. Second, this self-calibration is based on distance measurement rather than absolute position measurement for kinematic identification; therefore the calibration of the transformation from the world coordinate system to the robot base coordinate system, known as base calibration, is not necessary. These features not only greatly facilitate the robot system calibration but also shorten the error propagation chain, therefore, increase the accuracy of parameter estimation. An integrated calibration system is designed to validate the effectiveness of this calibration method. Experimental results show that after calibration there is a significant improvement of robot accuracy over a typical robot workspace.

scholarly journals Electromagnetic Position Measurement System Immune to Ferromagnetic Disturbances

2019 ◽  
Vol 19 (21) ◽  
pp. 9662-9671
Author(s):  
Heng Wang ◽  
Ryan Madson ◽  
Rajesh Rajamani
Keyword(s):  
Measurement System ◽  
Position Measurement

Applications of Bragg Grating in Strain Measurement of Electromagnetic Railgun

2011 ◽  
Vol 317-319 ◽  
pp. 1007-1011 ◽  
Author(s):  
Jin Liang Gu ◽  
Hong E Luo ◽  
Jian Xin Li ◽  
Yan Xia ◽  
Bao Ming Li
Keyword(s):  
Data Processing ◽  
Measurement System ◽  
Electromagnetic Interference ◽  
Strain Measurement ◽  
Bragg Grating ◽  
Electromagnetic Launch

A kind of strain measurement system of electromagnetic railguns based on Bragg Grating technology was introduced in this paper. The Bragg grating strain measurement system of electromagnetic railguns was designed. The data processing and the calibration of the measurement system were discussed. The experiments of strain measurement in electromagnetic launch were accomplished. The results show that the Bragg grating strain measurement system can work reliably in strong electromagnetic interference, which satisfied the special demand of anti- electromagnetic interference for the strain measurement system.

A Novel Permanent Magnet Linear Motor for the Application of Electromagnetic Launch System

2020 ◽  
Vol 30 (4) ◽  
pp. 1-5 ◽  
Author(s):  
Cong Deng ◽  
Caiyong Ye ◽  
Jiangtao Yang ◽  
Songjun Sun ◽  
Dezuan Yu
Keyword(s):  
Permanent Magnet ◽  
Linear Motor ◽  
Electromagnetic Launch ◽  
Permanent Magnet Linear Motor
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