Dynamic parameters selection method and simulation of the anti-resonance vibration machine

Aiming at the instability of the amplitude of the anti-resonance vibration machine, the viewpoint is put forward in this article that the further the distance of the two resonance points is, the more smooth the amplitude-frequency curve between the two points is and the more stable the amplitude of the vibration is, and an equation is built which shows the relationship among the distance of the two resonance points, the mass ratio and the anti-resonance frequency ratio. The condition equation for the situation that the anti-resonance point is at the midpoint of the two resonance points is deduced without damp, and the condition equation for the situation that the amplitude of upper body is locally minimum is deduced when the anti-resonance vibration occurs. Three methods of parameters selection are advanced to make the amplitude of the anti-resonance machine stable. These three methods requires the distance of the two resonance points is far enough to make the amplitude-frequency response curve of the upper and lower body near the anti-resonance point more smooth. The above methods for the parameters selection can ensure the stability of the amplitude to meet the practical requirements.