The invention discloses a six-degree-of-freedom ultralow frequency
vibration isolation device based on a zero stiffness
system and a
control system thereof, and relates to the fields of multi-degree-of-freedom
low frequency, ultralow frequency and even zero-frequency
vibration isolation and micro vibration
simulation experiments. The six-degree-of-freedom ultralow frequency
vibration isolation device based on the zero stiffness
system is formed by connecting a supporting platform, a basic platform and a vibration isolation module. The vibration isolation module comprises an upper connecting rod, a lower connecting rod, a columnar shell, a vertical spring, a horizontal spring and a connecting
assembly between the springs. The upper end of the upper connecting rod is connected with the supporting platform. The lower end of the upper connecting rod penetrates through an upper end cover of the columnar shell and is connected with the connecting
assembly between the springs. The upper end of the lower connecting rod is fixedly connected with a lower end cover of the columnar shell. The lower end of the lower connecting rod is connected with the basic platform. The vibration isolation module meets the characteristic of zero stiffness. In combination with a gravity environment self-adapting
control system, an isolated object is in a suspended state.
Low frequency, ultralow frequency and even zero-frequency full-band vibration immune and isolation performance can be realized, and the problem of the multicoupling technique of multi-degree-of-freedom ultralow frequency, vibration
resonance and non-linear dynamics is solved.