Dynamic frequency scanning interferometry measurement based on optical frequency synchronous motion measurement and error compensation

Guo, Yu; Duan, Changhao; Liu, Guodong; Liu, Bingguo; Chen, Fengdong

doi:10.1016/j.optcom.2021.126753

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…However, in practical measurements, environmental light, temperature drift in the acquisition circuit, and vibrations can impact the collected interference signal. The tiny vibration displacement of the measured object can be amplified by tens or even hundreds of times, which is a major source of measurement error during experiments [23,24]. Shortening the measurement cycle of the system and compensating for vibration errors during the frequency scanning process will be a key focus for improving the measurement accuracy of this system in the future.…”

Section: Discussionmentioning

confidence: 99%

Research on Fiber-Optic Optical Coherence Ranging System Based on Laser Frequency Scanning Interferometry

Zhou,

Yuan,

2024

Sensors

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In this paper, a system for absolute distance measurement is proposed based on laser frequency scanning interferometry (FSI). The system utilizes a digitally tunable laser as the light source and employs synchronized pulses to drive an analog-to-digital converter (ADC) for interference signal acquisition. The frequency domain demodulation for absolute distance measurement is achieved through a three-spectrum line interpolation method based on the Hanning window. The system takes advantage of the spatial filtering characteristics of a single-mode optical fiber and the diffuse reflection properties of light to achieve a high integration of the prism system that forms the interference optical path. The resulting integrated fiber-optic probe is capable of measuring the distance to a non-cooperative target even when oriented at a certain angle with the target. We designed and fabricated a portable prototype. Experimental validation demonstrated that the maximum measurement distance of the system is 73.51 mm with a standard deviation of less than 0.19 μm for optimal measurement results. Even when there is an offset angle, the system maintains good measurement repeatability.

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Section: Discussionmentioning

confidence: 99%

Research on Fiber-Optic Optical Coherence Ranging System Based on Laser Frequency Scanning Interferometry

Zhou,

Yuan,

2024

Sensors

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“…Some scholars at home and abroad have conducted a lot of research. Wang Weiming et al proposed a large-space dynamic angle measurement method based on machine vision and servo control, which expanded the measuring range of a large space angle to 18.788 m [3]; Gan Yu et al proposed a dynamic frequency scanning interferometry method to separate and compensate the phase errors in measurement [4]; Esward applied modeling and simulation to dynamic measurement technology and found that it was helpful to improve the understanding of dynamic measurement tasks [5]; Zhang Qingsong et al used a 2D laser displacement sensor to achieve dynamic non-contact measurement of wheelset geometric parameters such as flange height and wheel diameter [6]; Wang Xiqi et al proposed a missing detection compensation algorithm based on a constant velocity model and a region growing algorithm to improve the semantic segmentation accuracy, which eliminated the impact of dynamic objects on visual SLAM trajectory accuracy [7]; Zhang Hongwen et al proposed a set of working time series for aerial surveying and mapping cameras and a new high-precision calibration method, the effectiveness of which was verified by simulation results and experimental data [8]; Li Lin et al applied embedded multi-scale deep learning to the dynamic performance measurement system of radio frequency identification, which can improve the reading distance of multiple tasks from the physical structure and collision resistance of the system [9]; Li Li analyzed and modeled the dynamic positioning errors of the CNC machine tool guide system, and proved that there is a regular variation between the dynamic positioning error of XY workbench and the movement velocity [10]; Li Guofang et al studied the automatic tool-changing system of a machining center and the dynamic force measurement system of the drag link mechanism to identify the time start and offset of each force value time in the dynamic force record [11]; Yang Juqing et al applied a fuzzy adaptive PID tracking algorithm to single-axis laser tracking and rapid prototype tracking experiments, which made the angular acceleration of dynamic tracking exceed 200 • /s 2 [12]. As the most important large-scale dynamic measuring instrument, a laser tracker must have a good dynamic tracking ability and accurate dynamic measurement ability [13].…”

Section: Introductionmentioning

confidence: 99%

Research on Radial Double Velocity Measurement Method of Laser Tracker

Lv,

Hu,

et al. 2024

Processes

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For the dynamic problem that the low-speed sliding table is unable to meet the radial measuring speed of the laser tracker, this paper takes the sliding table of the indoor large-length standard device as the moving object to double the measuring distance by adding a pyramid prism, thereby doubling the radial speed of the laser tracker. In this paper, the measurement data are analyzed through equal interval measurement experiments, equal sampling frequency experiments and repeatability measurement experiments using a pyramid prism to obtain the following conclusions, respectively: Firstly, the stability of the actual interval of the laser tracker is optimal when the rated speed of the sliding table is 50 mm/s. When the pyramid prism is not used, the minimum standard deviation obtained by the laser tracker at a sampling interval of 5 mm is 0.0158 mm. Secondly, during the equal sampling frequency measurement, the stability of the laser interferometer is better than that of the laser tracker when the pyramid prism is not used. With two instruments at a sampling frequency of 10 Hz, the standard deviations of the local velocity of the laser interferometer are 0.1466 mm/s, 0.0693 mm/s and 0.1106 mm/s, respectively. The standard deviations of the laser tracker are 0.1582 mm/s, 0.1033 mm/s and 0.2008 mm/s, respectively. The same conclusion is obtained at a sampling frequency of 20 Hz. The stability of the laser tracker is better than that of the laser interferometer when the pyramid prism is used. Thirdly, the stability and reliability of the local velocity of the laser tracker are better than that of the laser interferometer. For example, at 10 Hz, the standard deviations of the local velocity of the laser tracker are 0.2745 mm/s and 0.2097 mm/s, respectively, and the repeatability of the local velocity is 0.9140 mm/s. The standard deviations of the local velocity of the interferometer are 0.6141 mm/s and 0.6368 mm/s, respectively, and the repeatability of the local velocity is 1.4886 mm/s. And the local velocity of the two measuring instruments is more reliable and stable at a low frequency (10 Hz). This experimental scheme provides a way to measure the high speed of a laser tracker using a sliding table at low speed.

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“…Polarization in conjunction with interferometer is an accurate method to measure the phase retardation of the polarization elements. Interferometric method has the advantage of determining the phase shift between the two beams precisely using fringes analysis which is crucial for many optical applications [10][11][12]. Polarization interferometer depends on the direct interference between the p and s polarization components to measure the phase shift which results from the sample under test.…”

Section: Introductionmentioning

confidence: 99%

A modified method for calibration of polarimetric components using polarizing interferometry

Abdallah¹,

Abdel‐Wahab²

2021

Meas. Sci. Technol.

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Polarization interferometer technique has been developed for calibration of phase retardation elements such as quarter/half wave plate with known tolerance in each one. In addition, this technique is used to measure unknown retardation elements to identify its phase retardation. A polarizing beam splitter is placed after Sagnac interferometer to split the produced fringes into p and s polarization interferograms to be analyzed. The phase retardation measurements depend on two states, the reference state which includes recording the reference p and s interferogram images without placing the sample then measuring state at which the p and s interferogram images are recorded after placing the sample inside Sagnac interferometer. Six images are recorded for each interferogram under a controlled environment to calculate the repeatability of measurements and for uncertainty estimation. The detected images are mathematically processed to determine the phase retardation of the polarimetric components. The results are found to be in a good consequent with the data measured by Senarmont compensator method.

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Dynamic frequency scanning interferometry measurement based on optical frequency synchronous motion measurement and error compensation

Cited by 7 publications

References 16 publications

Research on Fiber-Optic Optical Coherence Ranging System Based on Laser Frequency Scanning Interferometry

Research on Fiber-Optic Optical Coherence Ranging System Based on Laser Frequency Scanning Interferometry

Research on Radial Double Velocity Measurement Method of Laser Tracker

A modified method for calibration of polarimetric components using polarizing interferometry

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