Abstract
Dependence of linear displacement error, while measuring with angle transducers, on angle measurement system errors, kinematic and geometric errors of mechanism of linear motion transformation to rotation is shown. Dynamic processes, acting in an elastic element, connecting a movable compound, which linear displacement is measured, with the shaft of the angle measurement transducer, are modeled. Vibration modes, influencing the uncertainty of linear displacement measurement by an angle transducer, are defined. Results of numerical study by using FEM are verified and complemented by experimental research. Research stands and equipment are described.DOI: http://dx.doi.org/10.5755/j01.mech.22.3.14180
Highlights
Simplification of measurement system can be made by using angle measurement transducers for measuring compounds’ linear displacement by transforming the linear motion to rotational via adequate mechanisms
Rotation of a drum is measured by an angle transducer and it is calibrated by the units of linear displacement
Such system is used for measurement of linear displacements of tapes made without special steel marks or other material in a technological equipment of special purpose, e.g. in automation, production of metal raster scale by the laser method and other equipment [1-6]
Summary
Simplification of measurement system can be made by using angle measurement transducers for measuring compounds’ linear displacement by transforming the linear motion to rotational via adequate mechanisms. Most often as such mechanism can serve an accurate measurement drums which cover and turn a measurement tape connected with a movable compound. Rotation of a drum is measured by an angle transducer and it is calibrated by the units of linear displacement Such system is used for measurement of linear displacements of tapes made without special steel marks or other material in a technological equipment of special purpose, e.g. in automation, production of metal raster scale by the laser method and other equipment [1-6]. Value and character of these vibrations must be researched, evaluated reasons of their occurrence and possible effect of the measurement error on the reliability
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