Dynamic analysis and simulation for anti-resonant vibration machines with smallest upper body's amplitude when anti-resonant vibration happens

For the problem of amplitude instability of an anti-resonant vibration machine,a kind of method choosing parameters which made the driving-point amplitude of the anti-resonant vibration machine stable was put forward. The central idea of this method was to let the upper body's amplitude smallest when anti-resonant vibration happens. Under this situation,when the exciting frequency varied,the amplitudes of the machine's upper body and lower body varied synchronously. At the same time,the distance of the two resonant points should be large enough,then near the anti-resonant point the amplitude-frenquency response curves of the upper body and the lower body would be flat. Therefore,the stability of the amplitude could meet the application requirements. For the occasions in need of high amplitude accuracy,small scale adjustment could bring out.