Wyniki 1-1 spośród 1 dla zapytania: authorDesc:"Volodymyr M. GURSKY"

Implementation of dual-frequency resonant vibratory machines with pulsed electromagnetic drive DOI:10.15199/48.2019.04.08

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At present, the systems with regulated modes using the control and feedback facilities are becoming more and more widespread. The implementation of such systems is very relevant problem for effective operation of vibratory machines with resonant modes. This is due to the influence of technological factors on the dynamics of their oscillatory system, in particular on its amplitude-frequency characteristic [1-4]. In order to balance this effect out, the amplitude and frequency control is used. It allows to eliminate structural inaccuracies (errors), to provide stable characteristics due to the effect of a changing load. The publications [4, 5] are devoted to solving this problem. In terms of introduction into practice, the resonant machines should be designed using an alternating current electromagnetic drive. This is due to the following factors: ─ high reliability and durability due to the lack of elements and pairs (couples) of mechanical friction; ─ simplicity of the machine starting up and stopping due to the absence of influence of the mechanical system on the drive dynamics, which is not typical for machines with an electromechanical drive using the effect of Sommerfeld [6]. Nevertheless, the vibratory resonant machines with single-frequency modes are of limited use [7]. The systems with two operation frequencies are much more effective [8- 10]. In addition to the technological advantages of dualfrequency resonant systems, it is also necessary to take into account higher dynamic stability in comparison with single-frequency systems [11]. The dual-frequency systems based on the combined ball-inertial vibrator may also be promising at the present time [8]. The proposed design allows to use the resonance mode at the same frequency due to the use of the Sommerfeld effect. However, such a vibrator has the disadvantages of the mode regulation since the changing of the harmonic amplitude value at this frequency [...]

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