A Fast Swing Mirror Driven by Four Maxwell Force Linear Actuators
A technology of linear actuators and yaw mirrors, applied in the field of precision tracking, can solve the problems of small size, generally only a dozen to tens of microns, but the driving voltage needs hundreds of volts, and small force density, etc., to achieve a simple and compact structure , high force density and large working stroke
Active Publication Date: 2022-01-11
BEIHANG UNIV
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Problems solved by technology
The fast control deflection mirrors on the market are mainly divided into two categories: piezoelectric ceramic drive and voice coil motor drive according to different driving methods. Hundreds of volts; the stroke of the voice coil motor is two orders of magnitude higher than that of piezoelectric ceramics, the driving voltage is only a dozen volts, but the force density is small
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[0046] The specific implementation manner of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0047] The invention is based on a fast deflection mirror driven by four Maxwell force linear actuators, including a reflector, a Maxwell force linear actuator, a flexible support system, an angle detection system and a frame assembly. The reflector is installed on the reflector bracket, and together with the sensor induction plate and the flexible diaphragm, the motion assembly is composed. The four Maxwell force linear actuators are located under the motion assembly, and are connected with the motion assembly through eight demagnetization screws; the Maxwell force linear actuator The actuator is composed of armature, coil winding, stator core and permanent magnet, which respectively generate AC magnetic flux and permanent magnetic flux to make the armature move linearly. Four Maxwell force linear actuators are arranged i...
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The invention discloses a fast deflection mirror driven by four Maxwell force linear actuators, comprising a reflector, a Maxwell force linear actuator, a flexible support system, an angle detection system and a frame assembly; the reflector is installed on a reflector bracket , together with the sensor induction plate and flexible diaphragm, the four Maxwell force linear actuators are located below the movement component, and are connected with the movement component through demagnetization screws; the four Maxwell force linear actuators are arranged in pairs orthogonally fabric to generate torque to deflect the mirror; the flexible support system provides recovery torque for the actuating torque to achieve angle control; the four non-contact capacitive displacement sensors in the angle detection system are evenly distributed in four directions to detect the mirror in real time The steering angle is fed back to the control system to realize angle feedback control and angle closed-loop control. The invention has the advantages of high force density, compact structure, and convenient processing and manufacturing.
Description
technical field [0001] The invention belongs to the field of precision tracking for precision optical platforms, has four Maxwell force actuator structures, and specifically relates to a fast deflection mirror driven by four Maxwell force linear actuators. Background technique [0002] As a key device in the optical system, the fast control deflection mirror can control the direction of light propagation by controlling the rotation of the mirror, so as to realize the fast and precise pointing of the beam within the required rotation angle range, with fast response speed, high precision and high resolution. With high advantages, it has been widely used in the fields of adaptive optics, laser communication, image stabilization, precision tracking, beam control and target pointing. The fast control deflection mirrors on the market are mainly divided into two categories: piezoelectric ceramic drive and voice coil motor drive according to different driving methods. Hundreds of v...
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IPC IPC(8): H02K33/18G02B26/08
CPCH02K33/18G02B26/0816
Inventor 李伟鹏张笑妍黄海
Owner BEIHANG UNIV