The method of translation additive and multiplicative error in the instrumental component of the measurement uncertainty

Abstract

The paper proposes a method of conversion additive and multiplicative errors, mathematical models are obtained by a Taylor expansion of the transformation equations used measuring instruments in the instrumental component of the measurement uncertainty.

Development of the Scheme of the Installation for Mechanical Wastewater Treatment

“…The sedimentation tanks are the simplest and cheapest, as well as the least energy-intensive type of equipment in question. However, they have significant dimensions and low productivity [Sevostianov, 2020, Vasilevskyi, 2014, Vasilevskyi, 2016. Wastewater is supplied to the settler tank and during settling, lighter contaminants float to the surface, while heavy particles descend to the bottom of the structure, and then they are removed [Vedmitskyi, 2017].…”

“…The required power of the hydraulic drive of one pair of gratings is found from the following formula [Kukharchuk, 2016] (13) where: S p is the effective area of the piston of the hydraulic cylinders 5, 20 from the side of the rod cavity; l х -stroke length of hydraulic cylinders; p p -is the nominal operating pressure at the inlet to these hydraulic cylinders; t о is the duration of the opening of the gratings; η e , η p , η cc , η c -efficiency of the electric motor of the drive, pump, coupling connecting the pump with the electric motor, the hydraulic cylinder of the drive; G р is the weight of the grating 14; R у -frictional force in the piston and rod seals of the hydraulic cylinder 5 and in the seals 13; R b -is the frictional force when the grating 14 moves relative to the brush 12; F m.g -force of resistance to the movement of the grid 14, caused by the hydrodynamic head of water jets [Kovaleva, 2011] from the hydrants 10; The required power on the shafts of the drums 9, 24 is determined by the formulas [Kukharchuk, 2016] (15) where: N 1b , N 1s -the power spent on overcoming the sieves of the resistances created by brushes 31, 7 and water jets from hydrants 30, 6; N 2b , N 2s -the power expended for idling the sieves; K a.n , K a.f are the coefficients that take into account the additional power costs from the resistances at the end and deflecting drums (for a conveyor length of 100 m and more, it can be taken to be 1 [Kukharchuk, 2017, Langthjema, 2013]);…”

Rationing Indices Reproducibility and Suitability for Evaluating the Quality of Products or Manufacturingservices

“…Єдина важлива відмінність між придатністю і відтворюваністю виробничого процесу полягає в тому, що для оцінювання придатності виробничого процесу немає вимог щодо наявності у виробничого процесу стану статистичної керованості і застосування для управління виробничим процесом контрольних карт. При аналізі придатності виробничого процесу: 1) мають бути встановлені всі технічні умови, в тому числі вимоги виробничого середовища, наприклад, вимоги щодо температури і вологості [11,[17][18][19][20];…”

A frequency method for dynamic uncertainty evaluation of measurement during modes of dynamic operation

“…Literature sources [9,12] provide us with the differential equation which describes the dynamic relationship of input and output signals during the functioning of the measurement means measuring the dynamic moment of an electric machine (EM):…”

“…Dynamic measurement uncertainty is defined as a factor of measurement uncertainty, which is caused by a response by the measurement means to the frequency (speed) of the measurement of the input variable (input signal), which itself depends on the dynamic properties of the measurement means and the frequency spectrum of the input signal [11,12].…”