Design of a Roll Angle Measuring Sensor

Yang, Wenchang; Wang, Zhiqian; Shen, Chengde; Liu, Yusheng; Liu, Shaojin

doi:10.1109/access.2020.3004365

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…From the latter half of the 19th century to the present, a steady stream of academic articles has been dedicated to analyzing and applying the Moiré effect. Examples of applications include the inspection of surface, structure and material defects , measurement of mechanical properties [27][28][29], measurement of position, distance, thickness and vibration of objects [30][31][32][33][34][35][36][37][38][39][40], atmospheric * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Moiré pattern for parallel binary gratings based on AND and OR operators

Khokhuntod,

Kaewpoonsuk

2024

J. Opt.

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A method for analyzing the Moiré pattern of a parallel binary grating based on the high-frequency component of the omitted pattern is proposed. The analysis aims to investigate the signal components that influence the dark-light band formation of the Moiré pattern. The analytical technique begins with the consideration that both grating patterns are a set of binary rectangular signals with two signal level values, “0” and “1.” Subsequently, Fourier series expansion of these two sets of signals was performed considering the frequency, initial phase, and duty cycle of the signals. The superposition of both input signals relies on algebraic equations equivalent to AND and OR operators. The final step was to eliminate the effect of the high-frequency component, which is analogous to the low-pass filter of the electronic circuit (based on averaging the signal intensity per image length). If the frequencies of the two gratings are equal, the analysis based on both operators provides an output signal depending on the initial phase (placement position) and duty cycle values. If the frequencies of the two gratings are not equal, the analysis results show that the output signal has a frequency equal to the frequency difference between the two signals. Moreover, if the two input gratings had a duty cycle of 0.5, the overlapping resulted in a triangular shape. The results from the computer program to simulate the AND and OR operators were consistently compared to the plots of the analytical equations. In addition, they are compatible with image processing results.

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Section: Introductionmentioning

confidence: 99%

Analysis of Moiré pattern for parallel binary gratings based on AND and OR operators

Khokhuntod,

Kaewpoonsuk

2024

J. Opt.

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“…In 1999, Lin et al found that the Moiré fringes observed behind a test grating were sensitive to small angles [ 28 ]. With the development of charge-coupled device (CCD) technology, the rolling angle was measured by using Moiré fringes combined with CCD technology [ 29 ]. Later in 2006, Wang et al proposed a sensor that used the Talbot effect to detect the local light intensity and incident angle of a light source [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

An Ultracompact Angular Displacement Sensor Based on the Talbot Effect of Optical Microgratings

Yang

et al. 2023

Sensors

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Here, we report an ultracompact angular displacement sensor based on the Talbot effect of optical microgratings. Periodic Talbot interference patterns were obtained behind an upper optical grating. By putting another grating within the Talbot region, the total transmission of the two-grating structure was found to be approximatively in a linear relationship with the relative pitch angle between the two gratings, which was explained by a transversal shift of the Talbot interference patterns. The influence of the grating parameters (e.g., the grating period, the number of grating lines and the gap between the two gratings) was also studied in both a simulation and an experiment, showing a tunable sensitivity and range by simply changing the grating parameters. A sensitivity of 0.19 mV/arcsec was experimentally obtained, leading to a relative sensitivity of 0.27%/arcsec within a linear range of ± 396 arcsec with the 2 μm-period optical gratings. Benefitting from tunable properties and an ultracompact structure, we believe that the proposed sensor shows great potential in applications such as aviation, navigation, robotics and manufacturing engineering.

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Extended Kalman filter-based robust roll angle estimation method for spinning vehicles

Feng,

Wu,

Zheng

et al. 2024

Heliyon

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Design of a Roll Angle Measuring Sensor

Cited by 4 publications

References 18 publications

Analysis of Moiré pattern for parallel binary gratings based on AND and OR operators

Analysis of Moiré pattern for parallel binary gratings based on AND and OR operators

An Ultracompact Angular Displacement Sensor Based on the Talbot Effect of Optical Microgratings

Extended Kalman filter-based robust roll angle estimation method for spinning vehicles

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