Open AccessIDENTIFICATION OF CONDITION OF LINEAR DISPLACEMENT SENSOR
Author(s) -
Tatiana Kelemenová,
Ivana Koláriková,
Ondrej Benedik
Publication year - 2020
Publication title -
tehnìčnì nauki ta tehnologìï
Language(s) - English
Resource type - Journals
eISSN - 2519-4569
pISSN - 2411-5363
DOI - 10.25140/2411-5363-2020-3(21)-259-265
Subject(s) - displacement (psychology) , comparator , gauge (firearms) , set (abstract data type) , reliability (semiconductor) , dimension (graph theory) , observational error , computer science , measurement uncertainty , mathematics , algorithm , statistics , power (physics) , engineering , electrical engineering , physics , psychology , archaeology , quantum mechanics , voltage , pure mathematics , psychotherapist , history , programming language
Urgency of the research. There are several types of displacement sensor available on market. Displacement sensor investigated in this work is based on optical encoder principle. Condition of sensors changes with using of it. Periodically it is necessary to check its condition, if it is within the declared limits. Target setting. Displacement linear sensor is mounted in comparator stand for the verifying of its condition using the set of length gauge blocks. Length gauge blocks allows to set up the etalon of length with various dimension in interval from 0.5mm to 100 mm. The systematic errors of used set of length gauge blocks of grade “0” are very small in comparing with measured dimension and measured deviations. Actual scientific researches and issues analysis. It is necessary to check actual status of sensor. It means that verification process will obtain the information about maximum permissible error and information about reliability. Uninvestigated parts of general matters defining. The main problem was to identify condition of sensor. The question of the probability distribution of measured values and uncertainty balance are uninvestigated, because the next research will be focused to this are. The research objective. The aim is to obtain maximum permissible error of explored sensor. On the base of deviation of measurement made on length gauges could be expressed. The optimal number of measurement is problem to know, because the low number will cause big uncertainty of measurement and large number of measurement will cause the large cost of measurement. The statement of basic materials. Gauge length blocks have been used for verification of investigated sensor. The set of gauge length blocks of grade “0” has been used, which are preferred mainly for calibration or verification purposes. Maximum permissible error has been estimated as math model for next using. Also optimal number of measurement is identified from analysis of standard deviation of measurements made one hundred times on selected dimensions. Conclusions. The investigated sensor meets the maximum permissible error limits set by the manufacturer with a large margin, and so the maximum permissible error limits have been tightened so that the measurement uncertainty is better. The sensor can be used in dimensional measurement applications, even in industrial conditions.