High-performance limited rotation brake

Abstract

The invention discloses a high-performance limited rotation brake. The high-performance limited rotation brake comprises a rotating shaft supporting assembly, n coils are distributed in the axial direction of a rotating shaft, the middle of each coil is fixed to the rotating shaft, and the two sides of each coil reversely extend along the same straight line; permanent magnet assemblies are fixed to the base, and each permanent magnet assembly comprises n+1 layers of permanent magnets distributed in the axial direction of the rotating shaft. One side and the other side of the n coils are respectively inserted into the permanent magnets of the two groups of permanent magnet assemblies, so that the upper parts and the lower parts of one side and the other side of each coil are respectively provided with a layer of permanent magnet; current flows through the coil, the permanent magnet assembly generates a bias magnetic field, and the coil assembly is driven to drive the rotating shaft supporting assembly to rotate around the axis of the rotating shaft. The multi-layer structure is adopted, the magnets are effectively utilized, the characteristics of being small in size, light in weight and large in torque can be achieved, and therefore the requirement for bearing large loads can be met. And soft magnetic materials are reduced, so that the actuator is small in size and light in weight.

Description

technical field [0001] The invention relates to the technical field of photoelectric scanning and tracking, in particular to a high-performance limited rotation brake. Background technique [0002] The fast reflector is a component that works between the light source or receiver and the target to adjust and stabilize the visual axis of the optical system or the beam pointing. By using a voice coil motor to precisely control the deflection direction of the reflector, the beam deflection angle can be precisely controlled. Due to It has the advantages of compact structure, fast response speed, high working bandwidth, and high pointing accuracy. It is widely used in astronomical telescopes, adaptive optics, image motion compensation, free space optical communication, and precision tracking. It has become a stable beam and A key device for correcting the direction of beam propagation. [0003] An important index of the fast mirror is the operating bandwidth, and the device that ...

AI Technical Summary

Problems solved by technology

This results in acceleration and size that cannot meet performance requirements.

At the same time, the current brake design efficiency is generally low

Therefore, the existing mirror brake has low efficiency and heavy weight, and cannot drive the fast mirror to move at a higher acceleration

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