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Related Experiment Video

Updated: May 10, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Displacement sensor for indoor machine calibrations.

Asloob Ahmad Mudassar¹, Saira Butt

¹Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, Pakistan. asloob@yahoo.com

|June 6, 2013

Summary

This summary is machine-generated.

A novel displacement sensor uses a diverging laser beam and two mirrors for precise indoor machine calibration. This simple optical device achieves high accuracy for displacement measurements in mechanical systems.

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Last Updated: May 10, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Measurement of Spatial Stability in Precision Grip

Measurement of Spatial Stability in Precision Grip

Published on: June 4, 2020

Area of Science:

Optical Metrology
Mechanical Engineering
Instrumentation

Background:

Accurate displacement measurement is crucial for machine calibration.
Existing methods may lack simplicity or precision for indoor applications.

Purpose of the Study:

To present a simple, accurate displacement sensor for indoor machine calibration.
To demonstrate its application on machines like lathe machines.

Main Methods:

The sensor utilizes two laterally displaced plane mirrors in a diverging laser beam path.
Optical interference fringes are generated and counted by a detector during displacement.
One mirror travels along the laser beam's optical axis.

Main Results:

The sensor achieved an accuracy of 1.1015 μm over a range exceeding 150 cm.
Theoretical modeling, simulation, and experimental validation confirm its performance.

Conclusions:

The proposed sensor is a promising, simple, and accurate device for displacement measurement.
It is suitable for calibrating moving mechanical machine components.