Mygushchenko R. Methods and apparatus of systems for multiparameter functional diagnostics of vibrating objects (theoretical foundations and implementation)

Object of study: the process of uncertainty of the results of functional diagnostics of vibrating objects in terms of a priori chance of mechanical impact factor. The goal - increasing information efficiency, reliability and probability methods and devices vibration functional diagnostics in uncertainty when making diagnostic of technical state of functional and complex objects. Methods: methods of probability theory, stochastic processes, multivariate statistical analysis, information theory of measurement and control. Theoretical and practical results: synthesis of information mathematical models of measurement and logical transformations for functional diagnostics procedure based on limited a priori information about object properties diagnostics; the possibility of functional diagnostics functions for geometric distance informative parameters F-statistic wavelet transformed vibration signals; developed a method of forming an optimal space dimension F-statistic that provides a minimum error probability of the second kind of diagnosis or maximum power rules of decision making; have developed the theory and methods of structural and parametric identification of dynamic characteristics of measuring devices in distributed information systems measuring vibration; theory and design of low-frequency piezoelectric vibrator to obtain structural information and redundancy in the control of vibration signals and diagnosis priori uncertain condition. Scientific novelty: the first model developed diagnostic information solutions that account for the majority of risks diagnostics, a priori probabilities of the object and its measurement error values informative parameters allowing to define the conditions to maximize the probability of diagnosis by varying the dimension of the vector of input signals; first developed the theory and method of local regression analysis of three-dimensional wavelet image vibration signals and proved the possibility of additional diagnostic information taking into account the values of the scale in the analysis of local spectral change; have developed the theory and methods of monitoring changes of dynamic systems based on statistics accumulated amounts; have developed the theory and methods of metrological characteristics control vibrator that revealed changes in all components of the systematic and random errors that are caused by aging processes operating converters. Introduction: case studies in leading industrial enterprises of Kharkov. Scope: design methods and devices of functional diagnostics of vibrating objects.