Nonlinear Oscillation of Magnetic Levitation Uniformity Rigid Pole
|School||Nanjing University of Aeronautics and Astronautics|
|Keywords||Nonlinear vibration Vibration Control Maglev technology Vertical vibration isolation Maglev Isolation System|
Vertical isolation or micro- vibration control , the problems faced by the traditional media or mechanical vibration isolator . The crux of the problem is that the traditional isolation device must have sufficient vertical stiffness and bearing capacity to support the weight of the upper structure its vertical stiffness , nonlinear performance and poor . Maglev technology applied to structural vibration control , breaking the traditional method of isolation , a brand new maglev nonlinear vibration isolation method . Application of non-contact , non-linear vibration isolation method , to solve the technical problems faced in the structure of micro- vibration control of traditional control methods . As a magnetic levitation in the structure of micro- vibration control technology in the application of basic research , derived Maglev uniform straight just lever nonlinear dynamic equations of the system , and the research system inspired response and excitation frequency disturbances in the ground , still the relationship between the suspension height , the main findings include: 1. maglev uniform straight rod vibration isolation system just nonlinear dynamic model ; 2 . based on electromagnetic theory derived from electromagnetic levitation force between suspension height relationship , it is assumed that the system damping parameters obtained maglev uniform straight just non - linear equations of motion of the rod vibration isolation system ; 3 . nonlinear vibration theory to study the stability of the nonlinear equations of motion , and the results show that the system in the stationary suspension height near just rod is L stable ; 4 . Gang rod straight uniform maglev response in harmonic ground motion and any ground input analysis of the response of the system and excitation parameters , the system the relationship between the parameters . The results show that : the response to the input of the system for any ground vibration performance of the system is a typical nonlinear dynamics system harmonic ground disturbance response with external excitation frequency and just change rod stationary suspension height change ; exist bifurcation point , only when stationary suspension height is greater than a certain value , the response of the system is only stable solution .