Key Laboratory of Fundamental Science for National Defense;
Novel Inertial Instrument and Navigation System Technology;
School of Instrument Science and Opto‑Electronics Engineering;
Beihang University;
Beijing 100191;
China;
State Key Laboratory of Advanced Welding and Joining;
Harbin Institute of Technology;
Harbin 150001;
China;
Beijing Institute of Automatic Control Equipment;
Beijing 100074;
China;
Axial magnetic bearing(AMB); Dynamic stiffness; Magnetically suspended molecular pump(MSMP);