Parkhomenko D. The coaxial - linear motor with magnetic spring for vibration devices of building machines and mechanisms

The оbject of research: electromagnetic and electromechanical processes in a coaxial linear motor with permanent magnets and magnetic spring. The purpose of research: creation and investigation of a coaxial linear motor with permanent magnets and magnetic spring with the ability to adjust the natural frequency which provides a continuous process for construction vibrators, by means of the devised mathematical models. Methods of research: for the task in the calculation of electromagnetic, electromechanical, traction and frequency characteristics of the coaxial linear motor with permanent magnets and magnetic spring used in the theory of electromagnetic field, electrical circuits and mechanical vibrations. Study of distribution of magnetic induction was carried out with the help of computer modeling using finite element method. Theoretical and practical results and innovations: it carried out further development of theoretical and experimental studies of the coaxial linear motor with permanent magnets and magnetic spring, which provides a scientific basis for the optimal choice of engine to drive vibration system building elements; mathematical model of a coaxial linear motor with permanent magnets and magnetic spring vibration system for the research of dynamic modes, which allows, in contrast to the well-known models, calculate the frequency response as well as the dependence of inertial forces from the mains frequency, was improved; practical results of theoretical research and modeling carried out on the test bench for testing physical models of coaxial linear motor with permanent magnets and magnetic spring. A subject degree of introduction: the results of research in the form of settlement of electromechanical traction and frequency characteristics of coaxial linear motor with permanent magnets and magnetic spring, as well as the designs of these engines used for vibrating equipment, were introduced in the NPP "Promelektroobladnannya" (Kiev) and the creation of LLC "OPTIMA- F "(Kyiv) new models of vibrators, and were also used in the educational process of Kyiv national University of construction and architecturefor the master degree works and diploma projects. Sphere of use: electrical engineering.