Calibration

LINKING OF ROUNDS RESULTS OF INTERLABORATORY COMPARISONS ON CALIBRATION OF ELECTRICAL RESISTANCE MEASURES ON A DIRECT CURRENT

Interlaboratory comparisons (ILC) are used to evaluate and confirm measurements' accuracy, reliability, and reproducibility. ILCs are conducted for both testing and calibration laboratories (CL). They are comparing the results of measurements or calibrations obtained by different laboratories. The main stages of confirming the competence of laboratories include accreditation as the first step of such confirmation, as well as periodic participation in the ILCs.

IMPROVING THE NAVIGATION SYSTEM OF UNDERGROUND PIPE DEFECT DETECTION DEVICE

This article addresses the issue of noise and drift in microelectromechanical gyroscopes and their impact on measurement accuracy in engineering applications. The use of a complementary filter is proposed to combine information from the accelerometer and gyroscope to reduce inaccuracies. Research shows that the accelerometer has better result repeatability, which is important for obtaining stable measurements. At the same time, the gyroscope may be more effective in measuring translational movements.

CALIBRATION METHODS OF INDUSTRIAL ROBOTS

Robotization is one of the crucial directions of modernizing today's industrial production. Robotic systems offer solutions to many different challenges. However, their implementation is constrained by limited accuracy, which is inferior to conventional machine tools. A way to improve industrial robots' accuracy is to calibrate them, i.e., eliminate factors that affect accuracy by refining the mathematical models for software correction of manufacturing and assembly errors, as well as elastic and thermal deformations.

FEATURES OF TRANSFERRING SIZE OF LENGTH UNIT FROM WORKING STANDARD TO MEASURING DEVICE

The paper examines the characteristics of accuracy when transferring the size of a unit of length from a standard to an industrial measuring device. Based on the processing of the calibration results, the peculiarities of using different transfer schemes within the limits of the current regulatory document were considered. The problems that arise are studied. To ensure an effective scheme of transfer and unity of measurements, the expediency of application of the method of RMS deviations in the analysis of the obtained measurement results is shown.

USE OF CONTROL CHARTS OF CUMULATIVE AMOUNTS FOR THE METHOD OF EXTENDING THE SERVICE LIFE OF THE IONIZING RADIATION SOURCE ACCORDING TO CALIBRATION RESULTS

The article forms and substantiates the application of control charts for the method of extending the service life of the source of ionizing radiation (SIR). An algorithm for its aim was developed. The main types of con- trol charts and the features of their application were considered. A methodology for constructing a cusum map for extending the service life of SIRs based on the results of their calibrations, as well as a methodology for checking the results of SIR calibration for statistical controllability, were developed.

Градуювання розпізнавальної складності зображень тестових об’єктів уваги за допомогою перетворення Фур’є

Наведено технологію побудови шкали розпізнавальної складності зображень об’єктів уваги, які локалізують на зображеннях-тестах. Технологія ґрунтується на перетвореннях Фур’є, є експериментально підтверджена і може використовуватися для тестового контролю систем розпізнавання візуальної інформації.

CALIBRATION OF ANALYZERS OF THE MOBILE COMMUNICATION SYSTEM PARAMETERS

The creation and operation of mobile communication systems is impossible without determining the parameters of base stations and mobile communication systems. For these purposes, appropriate devices are used that optimally combine testing capabilities in a single portable solution, which eliminates the need for several separate control and measuring devices. One of the main types of measurements of such devices is the measurement of the power of ultra-high and extremely high frequency signals.

CALIBRATION OF QUARTZ ELECTRONIC STOPWATCHERS COMPARISON METHOD USING A DIGITAL CAMERA

Measurement of time intervals with low accuracy on intervals from a few seconds to several hours or days is relevant for some broad applications in various fields of activity. Such measurements are widely used in the technological processes of various enterprises during the preparation and quality control of the preparation of medicines, during the maintenance of technical equipment and mechanisms, chemical technological processes, etc.

Criteria for choosing test objects type for terrestrial laser scanners calibration

Calibration of terrestrial laser scanners allows increasing the accuracy of the obtained data in order to comply with regulatory requirements for engineering geodesy works. Two types of test objects (TCO) are used for calibration: point-based and plane-based. The aim of this work is to evaluate, summarize and classify the criteria for selecting the type and subtype of test objects for terrestrial laser scanners calibration.

OPEN-SCIENCE SPACE ISSUE: CALIBRATION OF MEASURING CHANNELS OF NON-DISMANTLING CYBER-PHYSICAL SYSTEMS

The analysis of the concept of Open-Science Space is carried out. The existence of ways to achieve reproducibility and traceability of research results performed by a group of worldwide situated Cyber-physical system operators/supervisors is shown. Ways to ensure the efficient operation of Cyber-physical systems as complex technological nondemountable objects with high requirements for metrological characteristics have been studied. To develop the scattered cyberphysical systems, the portable stable-in-time code-controlled measures of physical quantities have been studied.