MODEL OF MEASURING PROBE OF COMPUTER SYSTEM FOR DETERMINING RHEOLOGICAL CHARACTERISTICS OF SHIP’S TECHNICAL LIQUIDS
DOI:
https://doi.org/10.24025/2306-4412.3.2018.162737Keywords:
computer system, linear piezoelectric motor, friction contact, SimInTech.Abstract
Increase of requirements to emission of harmful substances into the environment by ship’s low-speed diesel engines requires continuous improvement of fuel system efficiency. This requires a more advanced definition of not only the coefficients of viscosity, but also rheological characteristics.
The purpose of the article is to create a model of measuring probe of computer system for determining rheological characteristics of ship’s technical liquids, to establish the relations of its components and their effect on measuring characteristics. A kinematic scheme of measuring probe with two oscillators with transverse polarization is created. The developed model of measuring probe with one oscillator takes into account the processes in three main units of the probe: linear oscillator, friction contact and gear technical unit. Three variants of refinement of frictional contact model are proposed. The transition to a linear model with one oscil-lator is implemented. In order to control the linear piezoelectric motor, pulse-width modulation is chosen. The model of measuring probe of computer system, which allows to develop methods of calculation and determination of coefficients of dynamic viscosity, rheological characteristics, is created.
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