Novel Lorentz Anti-Roll Inertially Stabilized Platform

Inertial stabilized platform, an actuator are used to stablize and point a broad array of sensors, cameras and weapon systems. Existing inertial stabilized platform with the defaults of a lot of interferences about mechanical bearings, high difficulty in using gas/liquid floating bearings and poor linearity for pure magnetic bearings. Now a novel Lorentz force anti-roll stabilized platform is presented to solve these problems. Its spherical structure and the working principle are introduced. The mathematical model of magnetic circuit of Lorentz force magnetic bearing is established by equivalent magnetic circuit method, and the radial deflection moment and current stiffness is obtained. Finally, the platform self-stabilized, large roll reduction and moment output functions have been preliminarily validated using the double closed-loop PM control strategy.