Then the capture unit-CAP6 of event manager of TMS320LF2407A is applied and two methods are used to get the rotor speed of magnetic bearings system.

Using new technologies of static pressure bearing, static pressure guide and gas bearing, the mold of fresnel lenses mirror was precisely manufactured.

A vertical hard bearing two-plane dynamic balancing machine,based on gas bearing technique,was designed,and corresponding mathematic model was established.

Based on the analysis of one type high-speed gas bearing working principle, the bearing diameter of axle static carrying force model was set up, and the relationship between bearing clearance gas flow rate, intensity of pressure and orifice radius were analyzed, along with the diameter of axle movement tracking under the centrifugal force in the low rotating speed was found.

Dynamics analysis of air bearing with ultra-precision in vertical direction;

A new method based FEMLAB was developed to predict static performance of air bearings.

Based on air bearings,a ground experiment system for optimizing the 3-DOF space manipulator reaction is set up.

Based on the rigid non-linear single degree-offreedom magnetic rotor-bearings system,and with the simplicity,easy realization,practicality and technological maturity of piping and instruments diagram(PID) control method considered,the PID control of a factual magnetic rotor-bearings system is simulated with Matlab,and its dynamic performance curves in some parameter fields are arrivedat.

The nonlinear dynamical behaviours of an active magnetic bearing-rotor system were investigated by numerical simulation.