Three-stable-state nonlinear vibration absorption device for restraining micro-amplitude vibration

The invention discloses a three-stable-state nonlinear vibration absorption device for restraining micro-amplitude vibration, which is characterized in that a pair of clamps are used for clamping and fixing a beam through two ends of a first bolt, a first magnet and a second magnet are respectively placed on two side surfaces of the beam and are fixed in the middle of the beam through attraction force, and a first bias magnet is arranged on the left side of the first magnet; a second bias magnet is arranged on the right side of the second magnet; the first bias magnet and the second bias magnet are fixed to the fixing plates through second bolts, and the fixing plates are fixed to the bottom plate through third bolts and symmetrically arranged on the left side and the right side of the beam. The clamp is fixed to the bottom plate through a fourth bolt, and a through groove is formed in the middle of the bottom plate and used for being connected with a to-be-damped system. By means of the three-stable-state no