| Autor: |
A. M. Gouskov, S. V. Skoryukov |
| Jazyk: |
ruština |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Nauka i Obrazovanie, Vol 0, Iss 7, Pp 1-14 (2017) |
| ISSN: |
1994-0408 |
| Popis: |
The article studies dynamics of ferromagnetic body in hybrid magnetic suspension (HMS). The body is supposed to have one degree of freedom and a nonlinear magnetic force dependence on the current and displacement. The magnetic force induced in the HMS is divided into a passive component and an active one. Specifying the law of current variation in the coil allows us to generate nonlinear oscillations under electromagnet action. To provide periodic excitation the appropriate law of the current variation in the electromagnet coil is proposed. The mathematical model includes external periodic step-excitation. The equation of motion is formed. The scales of similarity are highlighted in the system, and the equation of motion is reduced to dimensionless form.The motion dynamics is studied numerically. The relaxation method was used to determine the periodic motions at different values of dimensionless frequency of the electromagnet excitation as well as to estimate the influence of other dimensionless parameters on the system dynamics. The amplitude-frequency curve analysis allows us to come to conclusion that the nature of system nonlinearity is rigid. Adding the external periodic step-excitation leads to the qualitative change in the nature of movement. This points to the occurrence of bifurcation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
