Two-dimensional linear moving iron micro-angular displacement electromagnetic actuating device and its actuating method

Abstract

The invention provides a two-dimensional linear moving-iron type micro-angular displacement electromagnetic actuator and an actuation method thereof. The actuator comprises a first electromagnetic drive mechanism and a third electromagnetic drive mechanism which are located on the X axis and symmetrical with respect to the Y axis, and a second electromagnetic drive mechanism and a fourth electromagnetic drive mechanism which are located on the Y shaft and symmetrical with respect to the X axis; an elastic element which is fixedly connected to a lower surface of a micro-angle pendulum platformand a support structure provided with a dual shaft flexible hinge; an external fixation member; a permanent magnet which is fixedly connected to the periphery of a magnetizer at the bottom; the four electromagnetic drive mechanisms have the same structural composition and specification and are composed of coils and C-shape magnetic cores. The device of the invention adopts the moving-iron type electromagnetic actuation structure symmetrical design, which has small thickness and large actuation output force and high angle resolution; the electromagnetic power is linearly related to the controlcurrent; large biaxial deflection angle is achieved at low power consumption; moreover, the invention adopts a dual shaft flexible hinge supporting structure and an elastic element, which provides a rotation center determined by the mechanism; the constraint stiffness of the whole mechanism is increased and the dynamic characteristics of the device are improved.

Description

technical field [0001] The invention relates to a two-dimensional micro-angular displacement electromagnetic actuating device, in particular to a two-dimensional linear moving iron micro-angular displacement electromagnetic actuating device and an actuating method thereof. Background technique [0002] In recent years, with the rapid development of microelectronics engineering, aerospace engineering, biological engineering and other fields, micro-angular displacement two-dimensional fast actuation devices have been widely used in astronomical telescopes, image stabilization control, precise pointing of spacecraft communications, and satellite imaging. application and is playing an increasingly important role. Although the current piezoelectric-driven two-dimensional micro-angular displacement actuating device has high resonance frequency, it has the disadvantages of high driving voltage and small actuating stroke; while the two-dimensional micro-angular displacement actuatin...

AI Technical Summary

Problems solved by technology

Although the current piezoelectric-driven two-dimensional micro-angular displacement actuating device has high resonance frequency, it has the disadvantages of high driving voltage and small actuating stroke; while the two-dimensional micro-angular displacement actuating device based on voice coil motor drive can be High actuation stroke can be achieved under low power consumption, but its bandwidth is low and the output force is small. In fact, the maximum output force is often limited due to the coil heating problem caused by high current; and the moving coil voice coil motor is working It also has a certain influence on the dynamic characteristics of the mechanism

Images