The invention discloses a six-degree-of-freedom absolute
pose measuring device based on quasi-zero stiffness. The six-degree-of-freedom absolute
pose measuring device comprises a reference platform, ato-be-measured platform, a
pose resolver and six quasi-zero stiffness supporting legs of the same structure. Currents in opposite directions are respectively supplied to a lower end coil and an upperend coil, at the moment, two coils generate an
electromagnetic field in the surrounding space, the
electromagnetic field interacts with the magnetic fields of the lower
magnet and the upper
magnet togenerate electromagnetic rigidity opposite to rigidity of the spring, and the rigidity of the spring and the electromagnetic negative rigidity are mutually counteracted, so the rigidity of the wholesupporting leg is close to zero rigidity; when the to-be-tested platform moves in the space, the motion cannot be transmitted to the reference platform, so the reference platform is in a static state;at the moment, deformation of the six supporting legs can be measured through the
laser displacement sensors, six sets of deformation are input into an pose
resolver, and the displacement and attitude of the to-be-measured platform can be solved through
kinematics positive solution of the six-degree-of-freedom device.