Method for detecting three-dimensional force of a fiber-integrated monolithic clamp guided by metal additive manufacturing

Abstract

A method for detecting a three-dimensional force of a fiber-integrated monolithic clamp guided by metal additive manufacturing, including: pre-preparing a three-dimensional force sensor, including a clamp head, an elastomer, and a transmission component; three groups of etched stepped reduced-diameter fiber gratings are provided on the elastomer; constructing, when the clamp head of the three-dimensional force sensor clamps the tissues, a mechanical model of the elastomer, establishing a relationship between central wavelength drift amounts of the etched stepped reduced-diameter fiber gratings and a temperature as well as the three-dimensional force, and deriving a force and temperature sensitivity matrix; decoupling central wavelength values of the three groups of etched stepped reduced-diameter fiber gratings to measure the three-dimensional force and the temperature; using a long short-term memory neural network to train network parameters; and outputting types of the tissues clamped by the clamp in a classified manner through a random forest algorithm.