Nanotechnology and high-precision optical displacement sensor design for optomechatronical systems

2008 ◽  
Author(s):  
Ali Rostami ◽  
R. Yadipour ◽  
K. Abbasian ◽  
Z. D. Koozehkanani ◽  
A. Ghanbari ◽  
...  
Keyword(s):  
High Precision ◽  
Displacement Sensor ◽  
Sensor Design ◽  
Optical Displacement

The Design of High-Precision Capacitance Micro-Displacement Sensor

2011 ◽  
Vol 217-218 ◽  
pp. 1797-1801 ◽  
Author(s):  
Li Jun Wang ◽  
Dong Fei Wang ◽  
Xu Hu Wang ◽  
Shu Heng Shi
Keyword(s):  
High Precision ◽  
Design Method ◽  
Displacement Sensor ◽  
Sensor Design ◽  
Digital Converter ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Serial Interface

This paper presents a design method of capacitance micro-displacement sensor, based on the programmable capacitance-digital converter AD7746. AD7746 is controled by Single-Chip Microcomputer which gathers the variation of capacitance from the plates and converts it to the digital quantity.The SCM PIC16F877 connecting with AD7746 through the I²C bus reads the digital quantity converted by AD7746 through software programming, then transmits the data into PC through serial interface,in which the whole high-precision capacitance displacement sensor design is accompished.

High-precision time-grating displacement sensor based on harmonic wave correcting method

2005 ◽  
Author(s):  
Yang Wei ◽  
Donglin Peng ◽  
Xiaokang Liu ◽  
Xinghong Zhang
Keyword(s):  
High Precision ◽  
Harmonic Wave ◽  
Displacement Sensor ◽  
Precision Time

A Fiber-Optic Displacement Sensor Based on High-Precision Differential Phase Measurement

2018 ◽  
Vol 36 (18) ◽  
pp. 4046-4050 ◽  
Author(s):  
Ke Chen ◽  
Min Guo ◽  
Yang Yang ◽  
Kang Liu ◽  
Wanjin Cai ◽  
...  
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Phase Measurement ◽  
Displacement Sensor ◽  
Differential Phase

scholarly journals High precision machining of a displacement sensor for helicoidal motions

2021 ◽  
Author(s):  
Zeina ELRAWASHDEH ◽  
Philippe REVEL ◽  
Christine PRELLE ◽  
Frédéric LAMARQUE
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Geometric Model ◽  
Translational Motion ◽  
Surface Characteristics ◽  
Measurement Range ◽  
Linear Displacement ◽  
Displacement Sensor ◽  
Fiber Optic Probes

Abstract This research study presents the design and the high precision manufacture procedure of a fiber-optic displacement sensor. It is composed of two fiber-optic probes associated with a structure of a cones’ grating. The sensor is characterized by its ability to measure the linear displacement for an axis performing a helicoidal motion. This motion has been demonstrated on a high precision lathe; where the spindle provided the rotational motion, associated to a translational motion on the linear stage. This allowed to obtain the two simultaneous motions. The displacement of the translational stage is measured by the sensor in real time.Firstly, a highly precise geometric model of the reflector part for the sensor was developed. This model provided a specific geometry for the cones-assembled grating, which has been precisely manufactured. The geometric parameters and the surface characteristics of each step in the fabricated grating were both identified in situ on the lathe. The agreement between simulation and experimental results is excellent. The performances of the fiber-optic displacement sensor were identified in-situ on the lathe. The analysis of the voltage output signals from the two fiber-optic probes is used to measure the grating displacement. The unbalanced rotation due to non-centered axes was also characterized. The sensor provided a micrometric resolution, on a measurement range of more than one centimeter.

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