Authors: A.G. Pimonov, A.A. Shigina

Title of the article: Mathematical modeling of process of functioning of "boring rig - roller bit - rock" system in state of uncertainty

Year: 2015, Issue: 5, Pages: 138-144

Branch of knowledge: Applied mathematics

Index UDK: 51-74

DOI: -

Abstract: The investigation results of the generation process and harmonics superimposition of the impact and interrelations of system functioning parameters under different loading conditions taking into account the adaptive element, a smoothing harmonic shock during the boring of rocks with different drillability values. It is determined that adaptive element necessary for timely response of the system to changes in the working object properties and maintaining the model parameters in the functioning process in an optimum ratio. The developed method takes into account the characteristics, nature of the interrelationships between the system functioning parameters with adaptive element and change under condition of uncertainty. Using the developed parametric algorithms, the resulting dependence of the bits endurance, indicator of drillability and rock properties based adaptive element that allows us to estimate the mathematical model of system functioning and to determine its optimal parameters. Investigated the adaptability of system functioning process model using parametric algorithms taking into account a priori information. The analysis of the determinated dependencies showed that investigated system model is able to quickly adjust it parameters and effectively perform assigned functions in a wide range of unpredictable changing conditions.

Key words: modeling technical system parameters of functioning identification uncertainty

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