Estimation of metrological characteristics of a high-precision digital autocollimator using an angle encoder

Andreeva, T. A.; Bokhman, E. D.; Venediktov, Vladimir Yu.; Gordeev, S. V.; Королев, А. Н.; Kos’mina, M. A.; Lukin, A. Ya.; Shur, V. L.

doi:10.1364/jot.85.000406

Cited by 6 publications

(4 citation statements)

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“…Pseudo stationary state calculations were executed before application of stationary method (temperature is constant). History of temperature changes up to stationary state was not considered [16][17][18][19]. The material's properties were used from program's data base.…”

Section: Methods Of Modelingmentioning

confidence: 99%

The End-to-End Simulation of Semi-Continuous Casting and Subsequent Hot Rolling with Account of Microstructure

Erisov

Surudin

Bobrovskij

et al. 2019

KEM

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Basing on the developed methodology for data transfer between the ProCAST and Deform-3D software products, which allows exporting geometry, temperature, residual stresses and microstructure of the casting, it is simulated semi-continuous casting of ingots from aluminum alloy 5182 into a direct chill mold and their following hot rolling in a reversing rolling stand to with aim to study microstructure the evolution.

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Section: Methods Of Modelingmentioning

confidence: 99%

The End-to-End Simulation of Semi-Continuous Casting and Subsequent Hot Rolling with Account of Microstructure

Erisov

Surudin

Bobrovskij

et al. 2019

KEM

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“…It is imperative to minimize the noise level of the sensor signal in order to achieve high-resolution angular displacement measurement [ 206 , 207 , 208 ]. The method of self-collimation has maintained enduring popularity and continues to be utilized, with the development of numerous diverse variations over time [ 171 , 173 , 178 , 209 , 210 , 211 , 212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 , 220 , 221 , 222 , 223 , 224 , 225 , 226 , 227 ]. The detection units are CCDs (Charge Coupled Devices) [ 228 , 229 ], QPDs (quadrant photodiodes) [ 230 , 231 ], and PSDs (position-sensitive detectors) [ 64 , 232 , 233 ].…”

Section: High Precision With Multiple Axesmentioning

confidence: 99%

A Review: High-Precision Angle Measurement Technologies

Wang,

Ma,

Cao

et al. 2024

Sensors

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Angle measurement is an essential component of precision measurement and serves as a crucial prerequisite for high-end manufacturing. It guides the implementation of precision manufacturing and assembly. The current angle measurement methods mainly focus on multiple axes, high precision, and large measurement ranges. This article introduces the technology of angle measurement from the perspectives of single-axis and multi-axis measurement schemes. Firstly, the single-axis measurement scheme is primarily achieved through optical methods, such as encoder discs that measure energy changes and interferometric phase changes, as well as mechanical, electromagnetic, and inertial angle measurement methods, among which interferometric methods offer the highest accuracy, with high cost, and encoder discs provide the largest measurement range with an ordinary price. Secondly, in the multi-axis measurement scheme, autocollimation instruments, including plane mirrors, gratings, and self-designed targets, are the main options. Although grating encoders can achieve three degrees of freedom in angle measurement with an ordinary price, they are limited in terms of measurement range and sensitivity compared to self-designed targets. Lastly, artificial intelligence assistance precision measurement is increasingly being embraced due to significant advancements in computer performance, making it more convenient to identify the relationship between measured values and detection values. In conclusion, angle measurement plays a crucial role in precision manufacturing, and the evolving and improving technologies provide the manufacturing industry with greater choices. The purpose of this review is to help readers quickly find more suitable technical solutions according to current application requirements, such as single/multiple axes, accuracy level, measuring range, budget, etc.

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“…The inherent ability of this approach to generate angle standards in the form of digital files was also demonstrated. Later the authors have significantly improved the system performance [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of the Image Metric of Periodic Structures in an Opto-Digital Angle Measurement System

Королев

Lukin

Filatov

et al. 2021

Sensors

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Measurement of the object angular position and its change is one of the important tasks in measurement technique. Our method is based on determination of the angular position of a 2D periodical optical pattern (2D mark) at the object, captured by the sensor of a digital camera. System performance can be frustrated by errors in determination of the spot coordinates on the camera sensor; by the presence of lens aberrations; by deviations from the parallelism of the pattern planes and the camera sensor; and by differences between the actual spots positions and the ideal grid. In the paper we discuss the effect of these errors and the way to correct or eliminate them. We have developed the mathematical routine and the corresponding numerical codes for correction of the said errors. The code and the routine we checked in a real experiment. It has shown that the correction decreases the standard deviation in 15 times.

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Estimation of metrological characteristics of a high-precision digital autocollimator using an angle encoder

Cited by 6 publications

References 0 publications

The End-to-End Simulation of Semi-Continuous Casting and Subsequent Hot Rolling with Account of Microstructure

The End-to-End Simulation of Semi-Continuous Casting and Subsequent Hot Rolling with Account of Microstructure

A Review: High-Precision Angle Measurement Technologies

Reconstruction of the Image Metric of Periodic Structures in an Opto-Digital Angle Measurement System

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