Bondar R. Linear permanent magnet vibratory motors for the construction machines and mechanisms drive

The object of research is electromagnetic, electromechanical and thermal processes of the linear permanent magnet vibratory motors. The dissertation purpose. The dissertation is devoted to the progress of the linear permanent magnet vibratory motors (LPMVM) theory by means of new mathematical models development and existing ones improvement, further elaboration of electromagnetic parameter calculation methods and electromechanical characteristic analysis ones, which allow to consider the features of the building technological processes, in particular an armature oscillating motion, a wide operating frequency range, the use of massive magnetic cores which are made of low-carbon steels and non-periodic nature of electromechanical oscillating processest. The Methods of research are symbolic method, method of electromechanical analogies, finite element method, D'Alembert method, Hertz's theory of contact interaction, Poincare mapping, Lyapunov exponent method. Theoretical and practical results and innovation. Approaches to determination of electromagnetic parameters, electromechanical oscillatory characteristics, thermal indicators of LPMVM which are based on application of mathematical models which consider mutual connection of electromagnetic, mechanical and thermal processes, regularities of change of parameters of the scheme of substitution from working frequency, current and mode are improved, the developed mathematical models provide increase of accuracy of calculation, efficiency of designing and development of new technical decisions of motors. Recommendations for the selection of the structure and optimal design parameters of LPMVM vibration action, the use of which in practice allows to create construction equipment, with such motors as an electric drive, which has improved energy performance