Electromagnetic two-dimensional deflection adjusting device with self-sensing function and method

Abstract

The invention discloses an electromagnetic two-dimensional deflection adjusting device with a self-sensing function and a method. The device comprises a housing, four voice coil motors which are respectively installed at the bottom of the housing and are orthogonally arranged, a mirror support which is arranged at the upper ends of the four voice coil motors, a flexible guide reed of which the outer ring is installed at the upper end of the housing and the inner ring is installed at the bottom of the inner side of the mirror support, and a deflection guide rod which penetrates through a guide hole in the bottom of the housing and an inner hole of the flexible guide reed and is mounted at the bottom of the mirror support. .Differential current is applied to a pair of voice coil motors arranged on the Y axis or the X axis of the adjusting device, a pair of differential force is generated to push and pull the mirror support, deflection adjustment of the adjusting device around the X axis or the Y axis is achieved, and meanwhile a corresponding strain gauge set Wheatstone full bridge on the Y axis or the X axis of a cross-shaped beam of the flexible guide reed outputs a strain feedback signal According to the adjusting device, the actuation and sensing are integrally designed, the structure is compact, the weight is light, heat dissipation is fast, and high-precision two-dimensional .deflection actuation of a load can be achieved.

Description

technical field [0001] The invention belongs to the technical field of micro-angular displacement two-dimensional deflection actuation, and in particular relates to an electromagnetic two-dimensional deflection adjustment device and an adjustment method with a self-sensing function. [0002] technical background [0003] With the rapid development of aerospace engineering and other disciplines, micro-angle two-dimensional fast deflection adjustment devices have been widely used in astronomical telescopes, image stabilization control, precise pointing of spacecraft communications, and satellite imaging, and are playing an increasingly important role. [0004] Piezoelectric-driven micro-angle actuation platforms have disadvantages such as high driving voltage, small actuation stroke, fragile piezoelectric ceramics, and easy damage in the vibration and shock environment generated during the launch stage of space rockets. [0005] Electromagnetic deflection actuators using voice ...

AI Technical Summary

Problems solved by technology

[0004] Piezoelectric-driven micro-angle actuating platforms have disadvantages such as high driving voltage, small actuating stroke, fragile piezoelectric ceramics, and easy damage in the vibration and shock environment generated during the launch stage of space rockets.

[0005] Electromagnetic deflection actuators using voice coil motor coils as movers have heat that is difficult to dissipate in space applications. Many actuators need to install additional devices such as eddy current displacement sensors to measure the biaxial deflection angle, resulting in the volume of the actuator. Large, high power consumption, etc.

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