Izmeritel`naya Tekhnika最新文献_第4页

An efficient algorithm for areal morphological filter 一种高效的全域形态滤波器算法

Izmeritel`naya Tekhnika Pub Date : 2024-01-30 DOI: 10.32446/0368-1025it.2023-12-12-17

S. Grigoriev, О. V. Zakharov, V. G. Lysenko, D. A. Masterenko

{"title":"An efficient algorithm for areal morphological filter","authors":"S. Grigoriev, О. V. Zakharov, V. G. Lysenko, D. A. Masterenko","doi":"10.32446/0368-1025it.2023-12-12-17","DOIUrl":"https://doi.org/10.32446/0368-1025it.2023-12-12-17","url":null,"abstract":"This article discusses morphological filtering for assessing a areal parameters of a texture of engineering products. A data organization structure has been proposed that makes it possible to increase the efficiency of an iterative algorithm for enumerating a surface coordinates. Morphological filters complement the standard Gaussian filter to evaluate the functional properties of a surface. The widespread use of the areal morphological filtering in metrological practice is currently hampered by the lack of an effective algorithm. An algorithm based on a matrix representation of morphological operations on the surface coordinates is presented. For this purpose, different indexing of points on a primary surface and a structuring element has been introduced. A sphere or flat segment is used as the structuring element. The high performance of the developed algorithm is ensured due to the fact that all calculations are carried out by enumerating the surface coordinates in one pass, without nested loops, as in some other algorithms. Algorithms for morphological operations of dilation and erosion are presented, on the basis of which a closing and opening filters are constructed. Simulations carried out for various data sets and comparison with known morphological filtering algorithms confirmed the high efficiency of the designed algorithm. The results obtained can be used to analyze the functional properties of product surfaces.","PeriodicalId":14651,"journal":{"name":"Izmeritel`naya Tekhnika","volume":"69 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140486026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of a measurement procedure for estimating the orientation of a small unmanned aerial vehicle under conditions of changing status of measurement results 在测量结果状态不断变化的条件下估算小型无人飞行器方位的测量程序综述

Izmeritel`naya Tekhnika Pub Date : 2024-01-30 DOI: 10.32446/0368-1025it.2023-12-4-11

A. A. Kostoglotov, V. Zekhtser, A. Penkov, S. Lazarenko

{"title":"Synthesis of a measurement procedure for estimating the orientation of a small unmanned aerial vehicle under conditions of changing status of measurement results","authors":"A. A. Kostoglotov, V. Zekhtser, A. Penkov, S. Lazarenko","doi":"10.32446/0368-1025it.2023-12-4-11","DOIUrl":"https://doi.org/10.32446/0368-1025it.2023-12-4-11","url":null,"abstract":"The problem of processing measurement information with changing status of measurement results of micromechanical sensors of an intelligent on-board measuring system of a small unmanned aerial vehicle is considered. While vehicle is in the air, the measurement results status changes from confirmed to orienting, for example, due to sensor defects, degradation of the measuring channel, the appearance of false measurement output signals of micromechanical sensors due to vibrations and shocks caused by the movement of air masses. As a result, the probability of stability loss of a small unmanned aerial vehicle increases and it is necessary to raise the accuracy of estimating its orientation in conditions of changing status of measurement results. The measuring procedure of the Kalman structure is considered, the equations of which are determined with accuracy to the parameters of the transition and noise matrices of the state, as well as the perturbation vector, characterizing the measuring process. The parameter values are determined by a mathematical model for converting measuring information based on a dynamic mathematical model, which distinguishes the developed measuring procedure from a measuring procedure with a classical transition matrix. A neural network is used to find unknown parameters. A multilayer perceptron was selected as the basis of a neural network, for which an error back propagation algorithm is used to train. Based on the results of mathematical modeling and measurement experiment, it was found that the accuracy of the synthesized measuring procedure based on a dynamic mathematical model is higher than the accuracy of the measuring procedure of the Kalman structure with a classical transition matrix. The results of the study will be useful in the development of intelligent measurement procedures for on-board measurement systems operating under conditions of changing status of measurement results","PeriodicalId":14651,"journal":{"name":"Izmeritel`naya Tekhnika","volume":"226 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140482025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Express analyzers of motor fuels: the problems of metrological support 汽车燃料快速分析仪：计量支持问题

Izmeritel`naya Tekhnika Pub Date : 2024-01-30 DOI: 10.32446/0368-1025it.2023-12-63-70

Iu. A. Kopyltsov, A. B. Kopyltsova, T. B. Sokolov, B. P. Tarasov

{"title":"Express analyzers of motor fuels: the problems of metrological support","authors":"Iu. A. Kopyltsov, A. B. Kopyltsova, T. B. Sokolov, B. P. Tarasov","doi":"10.32446/0368-1025it.2023-12-63-70","DOIUrl":"https://doi.org/10.32446/0368-1025it.2023-12-63-70","url":null,"abstract":"The problems of identifying counterfeit motor fuels in real conditions are highlighted. It is noted that the use of express analyzers of motor fuels does not provide the necessary level of control over the accuracy and reliability of measurement results of the parameters of the fuel under study. The problems of metrological support of express analyzers of motor fuels based on near-infrared spectroscopy are considered. The method is based on the rejection of classical spectroscopic approaches in favor of complex multidimensional mathematical models, and the result of the analysis is a forecast; the usual metrological approaches do not work here, since quantitative analysis is replaced by some kind of qualitative analysis. The category of uncertainty is replaced by the category of reliability, which is much less developed. In this situation the usual accuracy control procedures are insufficient. For express analyzers based on the principles of dielmetry and near-infrared spectroscopy, the identification of counterfeit fuel turned out to be approximately the same: the addition of 8–10 % vol. of the counterfeit component practically does not change the measurement results. When the operations with a mathematical model is not allowed (it is the intellectual property of developers) some simple approaches to the assessment of metrological characteristics is proposed. This approach allows the metrologist or the user to verify the relevance of the program model for specific grades of motor fuel. A study of domestic express analyzers based on the principles of measuring the dielectric permittivity of fuels has been carried out. The ability of express analyzers of both types to identify counterfeit fuel is evaluated.","PeriodicalId":14651,"journal":{"name":"Izmeritel`naya Tekhnika","volume":"29 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140482503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accuracy analysis of the refractive index measurements by modifed prism methods 修正棱镜法测量折射率的精度分析

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-28-32

A. Yurin, G. Vishnyakov, V. Minaev

引用次数: 0

Building a model of the Earth's gravitational field within the Caribbean Sea based on satellite altimetry data 基于卫星测高数据建立加勒比海地球重力场模型

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-16-20

E. Tsyba, N. A. Vostrukhov

引用次数: 0

Ultrasonic non-destructive testing measures: regulation of technical requirements 超声波无损检测措施:技术要求规范

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-55-60

A. Romanko

引用次数: 0

State primary special standard of the unit of specif c heat of solids in the temperature range from 2 to 300 K GET 79-2020 国家一级固体比热单位温度范围在2 ~ 300 K的特殊标准GET 79-2020

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-4-9

A. A. Petukhov, B. G. Potapov, V. Kytin, M. Y. Ghavalyan, L. V. Yurov, E. Aslanyan, A. Shchipunov

引用次数: 0

Cosmological distances scale. Part 15: cosmically jerk and the dipole of gravitational heterogeneity 宇宙距离尺度。第15部分:宇宙震动和引力异质性的偶极子

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-10-15

S. F. Levin

引用次数: 1

Sensor of volume and angular position of the liquid mirror in tanks with axial symmetry at an indefinite orientation tanks in space 罐内液镜的体积和角位置传感器具有轴向对称，罐在空间中有不定方向

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2022-3-39-48

V. Y. Fateev

引用次数: 0

Classifcation of brandy products by geographical origin and ageing based on raman spectra and discriminant analysis methods 基于拉曼光谱和判别分析方法的白兰地产品地理产地和陈年分类

Izmeritel`naya Tekhnika Pub Date : 2023-04-14 DOI: 10.32446/0368-1025it.2023-3-33-38

A. Sahakyan, A. A. Yushina, A. D. Levin

引用次数: 0