Abstract
A synchronization and phase control method for pneumatic vibroexciters that operate under a self-exciting vibration mode was proposed using a channel with an aerodynamic link. A mathematical model for nonlinear equations that numerically described the dynamics of two vibroexciters was built. Results showed that the qualitative model described the dynamics of a mechanical system. Vibrations of equal phases were obtained in both vibroexciters. A consistent pattern of transformation into a self-exciting vibration regime was determined. The synchronization conditions of the vibroexciters were presented. The effects of the geometric parameters of the synchronization channel on the vibrations of the working body of a vibroexciter were determined. Lastly, the range of the vibration transformation of the vibroexciters toward a synchronous equal frequency was investigated.
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Kazimieras Ragulskis is a Lithuanian scientist and engineer. He established the Scientific School of Precise Vibromechanics and Vibroengineering. He is Dr. (1954), Habil. Dr. (1963), a Professor Emeritus, a corresponding member of the Academy of Sciences of the USSR (and later on, the Russian Academy of Sciences) (1987), a member of the Lithuanian Academy of Sciences (1987), and an honored inventor in the USSR (1987). K. Ragulskis supervised a team of scientists and developed the basis of theory for separate types of mechanical systems, as well as produced inventions, patents, and innovations, along with their practical implementations. His team also constructed original precise devices, manipulators, and robots, which found applications in various branches of industry and science. K. Ragulskis established a new scientific domain called precise vibromechanics and vibroengineering. He created new effects, developed known effects and qualities of nonlinear dynamical systems, formulated scientific backgrounds with separate directions in this domain, formulated principles for creating new systems, and developed applied scientific results for engineering practice. The obtained results are important for contemporary and future science and engineering. K. Ragulskis is the author and co-author of 28 monographs, 1750 inventions and patents, and hundreds of scientific works. He served as the scientific supervisor/consultant of approximately 300 defended and habilitated doctoral dissertations.
Edmundas Kibirkštis is a Professor and Supervisor of the science group at the Manufacturing Engineering Department of the Mechanical Engineering and Design Faculty of Kaunas University of Technology. His areas of interest include optical diagnostics, prognostication, machine dynamics research, and research on vibrotransducer in air cushion with active links. He published over 250 scientific works in the fields of mechanical, materials, and measurement engineering. He serves as a Supervisor for international and Lithuanian science projects.
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Kibirkštis, E., Pauliukaitis, D., Miliūnas, V. et al. Synchronization of pneumatic vibroexciters under air cushion operating mode in a self-exciting autovibration regime. J Mech Sci Technol 31, 4137–4144 (2017). https://doi.org/10.1007/s12206-017-0809-6
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DOI: https://doi.org/10.1007/s12206-017-0809-6