Measurement System of Static Stiffness for Magnetic Bearings Based on LabVIEW

Rotors can be suspended in stators through electromagnetic force in magnetic bearings.The static stiffness is one important technical characteristic of magnetic bearings,so it is a necessary procedure to measure static stiffness for magnetic bearings.A static stiffness measurement system was established up for active magnetic bearings in the open-loop control.This system was based on LabVIEW software development platform,and included X-Y-Z precision motorized stages,six-axis force/torque transducer,laser optical displacement sensor,and high precision ammeter for the most part.An industrial personal computer controlled every measurement cell for automatic measurement,acquisition,and data storage.It has the advantage of high automation.