Microgripper Measuring Gripping Force and Jaw Displacement Using Fiber Bragg Gratings

Abstract

The invention relates to a micro-clamp that uses an optical fiber Bragg grating to measure clamping force and jaw displacement, in order to solve the problem that the micro-clamp in the prior art cannot accurately measure the clamping force and jaw displacement at the same time. Its technical solution includes: a base, a single-chip flexible mechanism fixed on the base, an actuator installed in a cavity opened on the single-chip flexible mechanism, a controller, a FBG demodulator connected to the controller, and a The fiber Bragg grating multiplexing sensor connected to the FBG demodulator, the single-chip flexible mechanism includes: a displacement amplification mechanism, two symmetrically arranged clamping force sensing mechanisms and two symmetrically arranged jaws, the input of the displacement amplification mechanism The stage is in contact with the actuator, the two output stages of the displacement amplification mechanism, the two clamping force sensing mechanisms and the two jaws correspond one by one, and the output stage of the displacement amplification mechanism, the clamping force sensing mechanism and the jaws Connect sequentially.

Description

technical field [0001] The invention relates to the fields of micro-operation and micro-assembly, in particular to a micro-clamp that uses an optical fiber Bragg grating to measure clamping force and jaw displacement. Background technique [0002] With the rapid development of micro-electro-mechanical systems (Micro-Electro-Mechanical System, MEMS), coupled with the fact that traditional MEMS manufacturing processes cannot produce tiny parts with complex three-dimensional geometric structures and composed of different materials, micro-assembly and micro-operation technologies have emerged. pivotal role. Micro grippers are the end effectors of micro-assembly systems and micro-operating systems. They are in direct contact with the manipulated objects and play a decisive role in the completion of micro-assembly and micro-operation tasks. They are widely used in biomedicine, electronics manufacturing, and aerospace. and military fields. [0003] Commonly used micro clamp drive...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of micro-clamp that utilizes fiber Bragg grating to measure clamping force and jaw displacement, to solve the problem that the micro-clamp in the prior art cannot measure clamping force and clamping jaw displacement at the same time

Images