Voice coil motor and two-dimensional rapid mirror

Abstract

The invention discloses a voice coil motor and a two-dimensional rapid reflector. The voice coil motor comprises a coil assembly and a magnet assembly; the coil assembly comprises a coil assembly baseand a coil insertion slot plate fixedly connected onto the coil assembly base, and at least one coil is fixedly inserted in the coil insertion slot plate; the magnet assembly comprises a magnet assembly pedestal and a clamp fixedly connected to the magnet assembly pedestal, and at least one magnet is mounted on the clamp; the coil assembly and the magnet assembly are arranged opposite to each other, such that the magnet and the coils are arranged at intervals. The voice coil motor has large output and high output efficiency, and has low magnetic hysteresis loss and fast step response at highfrequency; the modular design of the voice coil motor enables fast application matching, and increases or decreases the number of coils and / or magnets as needed; and by applying the voice coil motor to the fast reflector, a large rotating angle range and a high operating bandwidth can be obtained without heating the reflector.

Description

technical field [0001] The invention relates to the technical field of photoelectric scanning and tracking, in particular to a voice coil motor and a two-dimensional fast mirror. Background technique [0002] Fast Mirror (FSM) is a component that works between the light source or receiver and the target to adjust and stabilize the boresight of the optical system or the beam pointing. By using a voice coil motor to precisely control the deflection direction of the mirror, the beam deflection can be precisely controlled Angle, used to realize the rapid adjustment of the "deflection-tilt" azimuth angle of the mirror, FSM has become a key part in different applications, such as industrial instrumentation, astronomy, laser communication, imaging system, experimental optical bench strip And independent research and development projects for key components. Voice coil motors are usually used as drive motors for FSMs. The traditional voice coil motor is composed of a stator assembl...

AI Technical Summary

Problems solved by technology

However, existing FSMs have reached the upper limit of fast step response without significant overheating due to rapidly changing magnetic flux densities

Excess heat requires additional mass and volume for thermal management and can distort components, reducing the accuracy of fast mirrors

Additionally, alternative motors such as stepper or brushless servo motors are too large for the application of the FSM and suffer from the same limitations described above

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