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A micro-positioning device based on normal stress electromagnetic drive

An electromagnetic drive and normal stress technology, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve the problems that the micro-scanning platform cannot meet the rigid requirements and large output, and achieve large output force, assembly-free, and simple structure compact effect

Active Publication Date: 2020-07-10
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The micro-scanning platform driven by piezoelectric ceramics cannot meet the rigid requirements of a large stroke, and the voice coil motor is selected as the driving device, which cannot meet the requirements of large output and small volume.

Method used

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  • A micro-positioning device based on normal stress electromagnetic drive
  • A micro-positioning device based on normal stress electromagnetic drive
  • A micro-positioning device based on normal stress electromagnetic drive

Examples

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as Figure 1 to Figure 4 As shown, the micro-positioning device based on normal stress electromagnetic drive in this embodiment includes a base 1, a mover ring 2, a flexible transmission assembly 3 and multiple sets of linear normal stress electromagnetic actuators 4, and the middle part of the base 1 is provided with Installation cavity 101, mover ring 2 is installed in the installation cavity 101 through flexible transmission assembly 3, wherein the mover ring 2 is used to install optical lenses; multiple sets of linear normal stress electromagnetic actuators 4 are installed in the mover ring in a ring shape 2 on the base 1 on the peripheral side; each linear normal stress electromagnetic actuator 4 includes a stator yoke 401 and a coil winding 402 wound on the stator yoke 401; the peripheral side of the mover ring 2 is provided w...

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Abstract

The present invention discloses a micro-positioning device based on normal stress electromagnetic driving, which comprises a base, a mover ring, a flexible transmission assembly and multiple sets of normal stress electromagnetic actuators. A mounting cavity is arranged on the base, and the mover ring is mounted in the mounting cavity through the flexible transmission assembly. The multiple sets ofnormal stress electromagnetic actuators are mounted on the base which is on the circumferential side of the mover ring in a ring shape; each normal stress electromagnetic actuator comprises stator yokes and coil windings wound on the stator yokes. A plurality of contact heads in one-to-one correspondence with the stator yokes are arranged on the circumferential side of the mover ring; each statoryoke is provided with a through slot; each contact head is located in the through slot of the corresponding stator yoke; and a working air gap is formed between the contact head and the through slot.The micro-positioning device based on normal stress electromagnetic driving of the invention has the advantages such as simple and compact structure, large output force, fast response speed, large motion range, high positioning accuracy and small rotational inertia.

Description

technical field [0001] The invention mainly relates to the technical field of optical imaging, in particular to a micro-positioning device based on normal stress electromagnetic drive. Background technique [0002] The high-precision micro-scanning device is a kind of high-precision micro-positioning platform, and it is one of the indispensable components in high-precision optical imaging and image stabilization systems. At present, the driving method of the scanning device usually adopts a voice coil motor or a piezoelectric ceramic. Micro-scanning platforms driven by piezoelectric ceramics generally have the advantages of ultra-high resolution, high bandwidth, high output, and high rigidity, but the stroke driven by piezoelectric ceramics is small, so the scanning stroke of piezoelectric ceramic-driven micro-scanning platforms is limited. . The micro-scanning platform driven by a voice coil motor has the advantages of large scanning stroke, low system power consumption, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03
CPCH02K41/031
Inventor 范大鹏范世珣谭若愚谢馨万子平张连超袁志华
Owner NAT UNIV OF DEFENSE TECH
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