Sources of measurement error of fast-flowing process parameters by charge-coupled devices

Dynamics layer of the sliding contact collector elements

“…Wear caused by a mechanical impact on the contacting surface. This conclusion is strongly supported by experiments [12-13, [16][17][18][19][20][21][22][23][24][25][26][27].…”

“…Prediction of the elements state depends on the accuracy of a physical model of contact interaction or measurement parameters during diagnosis of their situation [1][2][3][4][5][16][17][18][19][20][21][22][23] and their methods [6][7][8][9][10][11][12][13][14][15][24][25][26][27]. This prediction is a basic of technical products and theirs components operation.…”

“…It concerns all fields of science and technology, particularly electrical engineering [15][16][17][18][19][20][21][22][23][24]. The major condition for creating of effective technology to prevent wear of sliding contact elements is clear understanding of destruction process of interaction of such elements.…”

Effect of pressure changes in sliding contact

“…Any parameter of the process measured from a contact at different times will not have a unique value, due to a stochasticity arises because random surface roughness makes any tribological interaction stochastic. In the case of complexity measures, the approximate methods [49,[61][62][63][64][65], are more frequently applied to such problems, in particular, the method of Bubnov-Galerkin [61,[66][67][68] from continuum mechanics. In this study, we apply the method of Bubnov-Galerkin to investigate the tribological properties of the sliding contact in the commutator and brush assembly of the electric machine.…”

“…In this study, we apply the method of Bubnov-Galerkin to investigate the tribological properties of the sliding contact in the commutator and brush assembly of the electric machine. The theory of approximate methods is based on the functional analysis in applying numerical mathematics to solve different problems [49,[61][62][63][64][65]. Setting the approximate methods serves to determine the solvability of the approximate equation [ ỹ x à  ] on the exact equation А х=у, where А is a mathematical operator; y is a given data and x is a dependent variable, and the closeness between the true and approximation solution.…”