Abstract: In this paper, a fiber optic sensor system (FOSS) is proposed for the measurement of the rotational speed of a DC motor. It offers non-contact measurements. FODS is an intensity modulation b...
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A device for measuring the rotational speed of a shaft. A toothed wheel is connected to rotate with the shaft within a magnetic field. A birefringement optic fiber is connected to a light source, and passes
Abstract: In this paper, a fiber optic sensor system (FOSS) is proposed for the measurement of the rotational speed of a DC motor. It offers non-contact measurements. FOSS is designed using a fiber
Radiation absorption creates electronic excited states that are trapped by localized defects for extended periods of time. Heating the material enables the trapped states to interact with phonons and decay
Nowadays, modern laser gyroscopes provide the most accurate rotation measurements and can detect precise rotational motions associated with seismic events , Chandler and Annual
Allthe optical rotation sensors under development are based on the Sagnac effect which generates an optical path difference nL that is proportional to a rotation rate~.
The measurement of rotation is of considerable interest in a number of areas. For example, inertial navigation systems as used in aircraft and spacecraft depend critically on accurate inertial rotation
In this paper, we demonstrate a fiber-based configuration on rotational Doppler measurements for the detection of a rotational object using an ultra-broadband mode-selective
The recent development of low-loss single-mode optical fiber waveguides for light has made possible a new class of inertial reference devices built on the principal of a closed loop interferometer. Light
Phase-modulation sensors are based on detecting phase variations in optical fibers caused by angular changes. Researchers have proposed the utilization of specialized fiber structures
The study of a three-dimensional rotational sensor based on polymer optical fiber and its application in robotics is significant for several reasons, such as improved stability, cost
A simple and straightforward polymer fiber-optic dynamic rotational sensor for robot movement assessment was proposed in this work, relying on the intensity variation.
The key to the optical quantum gyroscope based on HOM interferometry is the recognition that a HOM interference experiment is similar in configuration to a Sagnac interferometer. It is well
One prerequisite for accurate and reliable rotational motion observations is careful sensor performance characterization. For the majority of scientific domains discussed in this Special Issue, the application
The core principle of this method is to use an optical coherence system to detect the changes in optical path difference (OPD) caused by the continuous diameter variation of a rotating
All these fibre optic rotation sensing techniques suffer the problem of the ceiling of detectable rotating speed: The FBG and reflective FOS can detect the rotating speed no more than
Moreover, optical fiber-based 3-D rotational sensors are still difficult to achieve as well as challenging to integrate into robotic systems for orientation measurement.
Abstract: A complex signal processing technique is usually required to process the data in most sensor design structures, and integration into real applications is also challenging. This work presents a
To these ends, an object of the invention is a device designed to measure the rotational speed of a shaft of the type having a toothed wheel that is rotationally driven by the shaft, a magnet...
This study proposes a novel rotational speed measurement method based on optical coherent displacement measurement. An optical coherence system is used to measure the relative