The invention discloses an electromagnetic quasi-zero stiffness
vibration isolation system based on the
Stewart platform. The electromagnetic quasi-zero stiffness
vibration isolation system based on the
Stewart platform comprises an upper platform and a lower platform, the upper platform and the lower platform are oppositely arranged, six
vibration isolation devices are arranged between the upperplatform and the lower platform, six vibration isolation devices are arranged according to a
Stewart platform mode, a first diaphragm spring is arranged at one ends of the vibration isolation devicesin a sleeved mode, the other end of the vibration isolation device is sleeved with a second diaphragm spring, each vibration isolation device comprises a guide shaft, a
magnet set is arranged on the outer side of the guide shaft, a coil set is arranged on the outer side of the
magnet set, a gap is formed between the
magnet set and the coil set, and an outer cylinder is arranged on the outer side of the coil set. According to the electromagnetic quasi-zero stiffness vibration
isolation system, the adjustable nonlinear
negative stiffness is realized by utilizing the mutual acting force between the permanent magnet and the conductive coil, the first diaphragm spring and the second diaphragm spring provide positive rigidity, and the quasi-zero rigidity near the working position is achieved through combination of positive and negative rigidity; the electromagnetic quasi-zero stiffness vibration
isolation system has the advantages of being simple in structure, the rigidity is controllable and the like, the inherent frequency of the vibration
isolation system is effectively reduced, and further the vibration isolation
frequency band is widened.