Magnetic suspension type sensing system for space full-degree-of-freedom absolute poses

A magnetic suspension type sensing system for space full-degree-of-freedom absolute poses, the system comprising:

• a reference platform;
• a plurality of quasi-zero stiffness supporting legs;
• and
• a platform to be tested;
• wherein the reference platform is connected with the platform to be tested in a spherical hinge mode through the plurality of quasi-zero stiffness supporting legs;
• wherein each of the plurality of quasi-zero stiffness supporting legs comprises:
• a lower end spherical hinge;
• a lower end cover;
• a positive stiffness unit;
• a negative stiffness unit, a shaft, a lower end shell;
• an upper end shell;
• and
• an upper end spherical hinge;
• wherein a spherical hinge end of the lower end spherical hinge is connected with the platform to be tested, and an other end of the lower end spherical hinge is threadedly connected with an end of the lower end cover;
• wherein an other end of the lower end cover is threadedly connected with an end of the lower end shell, an other end of the lower end shell is connected with an end of the upper end shell, a spherical hinge end of the upper end spherical hinge is connected with the reference platform, and an other end of the upper end spherical hinge is threadedly connected with an other end of the upper end shell;
• wherein the shaft is arranged in the lower end shell, and an end of the shaft is connected with the upper end shell;
• and
• wherein the positive stiffness unit and the negative stiffness unit are each arranged on both the shaft and an inner wall of the lower end shell.