Fast-steering-mirror large-angle rotating mechanism based on cross spring bearing

Abstract

The invention relates to a fast-steering-mirror large-angle rotating mechanism based on a cross spring bearing. A mirror-holder support of the mechanism is fixed on a motor installing machine frame; magnetic steels of four linear voice coil motors are connected with the motor installing machine frame, and coils are fixedly connected with an external mirror base; the center of the bottom of the motor installing machine frame is connected with the mirror base through a supporting mechanism; two bearing supports of the supporting mechanism are installed in the center of the bottom of the motor installing machine frame, and a pitching bearing installing frame is located inside an orientation bearing installing frame, and is connected with the orientation bearing installing frame through two orientation spring bearings; the two bearing supports are connected with the pitching bearing installing frame through two pitching spring bearings. According to the fast-steering-mirror large-angle rotating mechanism based on the cross spring bearing, the cross spring bearing has the enough flexibility in the working direction to prevent a driver from overloading, and the rotating angle range is wide, and the working bandwidth is high.

Description

technical field [0001] The invention belongs to the technical field of fast control mirrors, and relates to a large-angle rotation mechanism for fast control mirrors based on cross spring bearings. Background technique [0002] The fast control mirror is an important part that works between the light source or receiver and the target to adjust and stabilize the optical system's boresight or beam pointing. It has the advantages of small size, compact structure, high precision, high bandwidth and fast speed. Advantages, it has been widely used in important fields such as space laser communication, astronomical telescopes, optical stabilization, boresight stabilization, precision capture, aiming and tracking, deep space exploration, high-precision laser processing equipment and carrier laser systems. [0003] Due to the high frequency response characteristics of the fast control mirror system, the system is required to be frictionless, small in size, and compact in structure. H...

AI Technical Summary

Problems solved by technology

The traditional mechanical support structure has a shaft structure, which has the disadvantages of large inertia and frictional moment of the shaft structure, which leads to serious nonlinearity in the control system, slow system response, and low control accuracy.

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