Development of shape measurement system for high precision Wolter mandrel

2020 ◽  
Author(s):  
Takehiro Kume ◽  
Hirokazu Hashizume ◽  
Kentarou Hiraguri ◽  
Yusuke Matsuzawa ◽  
Yoichi Imamura ◽  
...  
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Shape Measurement

scholarly journals Uniaxial 3D Measurement with Auto-Synchronous Phase-Shifting and Defocusing Based on a Tilted Grating

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3730
Author(s):  
Hui Ren ◽  
Yuankun Liu ◽  
Yajun Wang ◽  
Ningyi Liu ◽  
Xin Yu ◽  
...  
Keyword(s):  
Computer Simulation ◽  
High Precision ◽  
Measurement System ◽  
Small Angle ◽  
Image Plane ◽  
Phase Shifting ◽  
Shape Measurement ◽  
3D Measurement ◽  
Fringe Analysis ◽  
Measured Object

Conventional uniaxial techniques generally require shifting objects or projection grating with the assistance of a high-precision mechanical moving component. To overcome this limitation, we propose a novel uniaxial 3-D shape measurement system with auto-synchronous phase-shifting and defocusing by using a tilted and fixed projection grating. The tilted focused image plane (FIP), which is reflected by a mirror at about 90 degrees, could be shifted across the measured surface by slightly rotating the mirror within a small angle range. This procedure will simultaneously introduce the change in defocusing and phase-shifting of the fringe. The modulation curve of each point can be deciphered by Fourier fringe analysis after a sequence of fringe intensities is acquired. Since both the measured object and projection grating are fixed, the proposed method could make the measurement system more compact and flexible. Both computer simulation and experiments are carried out to demonstrate the validity of this proposed system.

A high-precision laser displacement measurement system

2021 ◽  
Author(s):  
Wenqing Pan ◽  
Dengwei Zhang ◽  
Cui Liang ◽  
Chao Ma ◽  
Xiaowu Shu ◽  
...  
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Displacement Measurement

Implementation for High-Precision and Non-Contact System for the Measurement of Crankshaft and Camshaft

2011 ◽  
Vol 301-303 ◽  
pp. 959-964 ◽  
Author(s):  
Da Lin Cheng ◽  
Yi Wang ◽  
Yong Jie Ren ◽  
Xue You Yang
Keyword(s):  
Standard Deviation ◽  
High Precision ◽  
Measurement System ◽  
General Structure ◽  
Contact System ◽  
Scanning Laser ◽  
Test Results ◽  
Line Measurement ◽  
On Line ◽  
High Depth

A novel crankshaft and camshaft measurement system by optoelectronic scanning of which a flat-crystal was used to generate high depth of parallelism scanning laser was implemented. The general structure and principle were given. Mass of test results showed that the system could achieve high precision. The ranges could achieve ±8μm, standard deviation could achieve 3μm, and easy to operate, work reliably, automatically and on line measurement could be implemented.

Temperature Cycle Measurement System Based on Single Chip Computer

2010 ◽  
Vol 428-429 ◽  
pp. 487-492
Author(s):  
Xi Yin ◽  
Xiao Jun Wang ◽  
Yong Que Xie
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Low Cost ◽  
Temperature Cycle ◽  
Engineering Practice ◽  
Lead Wire ◽  
Single Chip ◽  
Piecewise Linearization ◽  
Single Chip Computer ◽  
Precision Temperature

This thesis introduces a low cost and high precision temperature cycle measurement system with adoption of PT100 as temperature sensor, with single chip computer as the core. The method of sub-three-wire connection is proposed for engineering practice, then, can eliminate the effects of lead wire resistance and simplify the external cable connection. We discuss and research circuit component selection, circuit design, improving system reliability, and a software method of piecewise linearization process is adopted, thus we ensure exact and reliable measure and the system characteristic of low cost and high precision.

A high-precision camera operation parameter measurement system and its application to image motion inferring

2001 ◽  
Vol 47 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Wentao Zheng ◽  
Y. Shishikui ◽  
Y. Kanatsugu ◽  
Y. Tanaka ◽  
I. Yuyama
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Parameter Measurement ◽  
Image Motion ◽  
Operation Parameter
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