scholarly journals High-precision optical measurement methods

1994 ◽  
Author(s):  
Hans J. Tiziani
Keyword(s):  
High Precision ◽  
Optical Measurement ◽  
Measurement Methods

Methods of temperature measurement in microwave heating technologies

2021 ◽  
pp. 20-28
Author(s):  
Boris A. Lapshinov
Keyword(s):  
Temperature Measurement ◽  
Microwave Heating ◽  
Microwave Radiation ◽  
Electromagnetic Fields ◽  
Optical Measurement ◽  
Measurement Methods ◽  
Heating Systems ◽  
Measurement Systems ◽  
Processed Material ◽  
Spectral Pyrometry

In industrial technological processes associated with the heating of the processed material by microwave radiation, it is necessary to measure the temperatures of objects. Methods for measuring temperatures in the fields of technology using microwave heating systems are considered. The main possibilities, disadvantages and limitations of the used contact and non-contact (optical) measurement methods are determined. The requirements for temperature measurement systems under conditions of exposure to strong electromagnetic fields are listed. The possibilities of the spectral pyrometry method are especially noted.

Optical measurement methods of Dragon-I accelerator

2007 ◽  
Author(s):  
Guojun Yang ◽  
Zhuo Zhang ◽  
Sifu Chen
Keyword(s):  
Optical Measurement ◽  
Measurement Methods

Miniaturized Optical Measurement Methods for Surface Nanometrology

CIRP Annals ◽  
2006 ◽  
Vol 55 (1) ◽  
pp. 577-580 ◽  
Author(s):  
X. Jiang ◽  
D. Whitehouse
Keyword(s):  
Optical Measurement ◽  
Measurement Methods

scholarly journals Experimental Comparison of Outdoor Baseline Measurements by Different Methods

2019 ◽  
Vol 131 ◽  
pp. 01057
Author(s):  
Youyi Gu ◽  
Li Wang ◽  
Fengzhuo Xiang ◽  
Wen Ouyang ◽  
Lixing Jiang
Keyword(s):  
Direct Measurement ◽  
High Precision ◽  
Optical Measurement ◽  
Experimental Results ◽  
Experimental Comparison ◽  
Total Station ◽  
Length Standard ◽  
Gnss Receivers ◽  
Surveying And Mapping

Outdoor baseline is the special length standard in the field of surveying and mapping, it can be used to verify the addition and multiplication constants of the total station and other photoelectric rangefinders. In order to ensure the authenticity, accuracy and reliability of verification results, conducting outdoor baseline traceability periodically is essential. At present, direct measurement by 24m invar tape or high precision electro-optical measurement is mainly used to achieve the traceability of outdoor baseline in China. Based on Shenyang baseline field, high precision rangefinder μ-base, 24m invar tape and high precision GNSS receivers are used for comparison experiments, and the experimental results are analyzed.

High-Precision Moment of Inertia Testing System and Error Analysis

2011 ◽  
Vol 87 ◽  
pp. 191-195
Author(s):  
Ai Jun Zhang ◽  
Xiao Lin Cheng ◽  
Wen Song Pan
Keyword(s):  
Error Analysis ◽  
High Precision ◽  
Measurement Methods ◽  
Moment Of Inertia ◽  
Testing System ◽  
Torsion Pendulum ◽  
Mechanical Structure ◽  
Analyze Error

Pointed at low precision of great object’s moment of inertia, high-precision moment of inertia testing system is developed. Comparing with several measurement methods, we adopt method of torsion pendulum. We design mechanical structure and analyze error which is compensated in software. According to our experiment, precision of this system can achieve 5‰.

An Optical-Triangulation-Based Method for Measurement of Blade Sections

2015 ◽  
Vol 713-715 ◽  
pp. 395-401
Author(s):  
Yong Zhu ◽  
Jing Liang Liu ◽  
Cheng Wei Li ◽  
Zheng Ya Kang
Keyword(s):  
High Efficiency ◽  
Optical Measurement ◽  
Measurement Methods ◽  
Free Form ◽  
Probe Radius ◽  
Optical Triangulation ◽  
Measurement Results ◽  
Probe Radius Compensation ◽  
Free Form Surface ◽  
Radius Compensation

Blades are an important part of aviation engine, its manufacturing compliance seriously affect the performance of the engine. Blades tend to be free-form surface modeling, which makes it extremely difficult to measurement. Since no probe radius compensation, high efficiency, non-contact optical measurement methods get more and more attention, but the inspection uncertainty of optical measurement is usually between 30um to 50um .To reduces the optical non-contact measurement uncertainty, this paper presents an Optical-triangulation-based method for measurement of blade sections. There is a data optimization process in the method, and this feature makes the proposed method can obtain better measurement results. At last, some experiments demonstrate the effectiveness of this method.

scholarly journals Optical measurement methods to study dynamic behavior in MEMS

2001 ◽  
Author(s):  
Christian Rembe ◽  
Rishi Kant ◽  
Richard S. Muller
Keyword(s):  
Dynamic Behavior ◽  
Optical Measurement ◽  
Measurement Methods
Sign in / Sign up

Export Citation Format

Share Document