A Control Sensitive Implicit Spherical Lorentz Force Magnetic Bearing

Abstract

The invention discloses a control-sensitive implicit type spherical lorentz force magnetic bearing. The control-sensitive implicit type spherical lorentz force magnetic bearing consists of a rotor system and a stator system. The rotor system mainly comprises an installation sleeve, magnetic steel, a magnetic conductive ring, a baffle ring, a baffle ring lock nut, a rotating disc and an assembly lock nut. The stator system mainly comprises a stator framework, a deflection coil, a sensitive coil, epoxy glue and an aluminum base plate. According to the control-sensitive implicit type spherical lorentz force magnetic bearing, on the basis of an existing spherical implicit type lorentz force magnetic bearing scheme, the triangle magnetic conductive ring and a trapezoid magnetic steel structure are utilized, so that the magnetic circuit paramagnetic effect is improved, and the air gap magnetic density uniformity is improved; and meanwhile, a double-coil stator structure is utilized, so that the separation of rotator deflection control from angle sensitivity is achieved, and the double functions of the deflection control and the angle sensitivity can be simultaneously achieved.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a control sensitive implicit spherical Lorentz force magnetic bearing. Background technique [0002] Reaction flywheels, offset momentum wheels, and dual-purpose flywheels for attitude control and energy storage all change the magnitude of angular momentum by changing the rotational speed, and output control torque. The torque accuracy is high, but the torque is small, which cannot meet the urgent need of the spacecraft for agility and excitement. need. The magnetic levitation gyro flywheel forces the high-speed rotor to deflect through the deflection magnetic bearing, changes the direction of the angular momentum of the rotor, and outputs the precession control torque, which is large. In addition, the yaw magnetic bearing can be used to compensate the yaw disturbance torque, so that the high-inertia high-speed rotor has good axis alignment and is sensitive to the att...

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Problems solved by technology

[0003] Chinese patent 201110253688.0 a high-torque magnetic levitation flywheel and patent application 201510813055.9 an inner rotor magnetic levitation spherical gyro flywheel described Lorentz force magnetic bearings are both explicit (magnets are placed outside) structures, and the magnets are located on both sides of the air gap. The edge effect of the magnetic circuit at the end is obvious, the magnetic flux leakage is serious, and the uniformity of the magnetic density in the air gap is poor

As a result, the rotor cannot realize the dual functions of deflection control and angle sensitivity at the same time

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