Curved surface deflection displacement field reconstruction method, device and equipment

Abstract

The invention relates to a curved surface deflection displacement field reconstruction method, a device and equipment. The method is applied to deformation measurement of high aspect ratio wings. N measuring points are arranged on the wing surface of the wing; wherein each measuring point is provided with a pair of orthogonally distributed strain sensors, the value of N is an integer greater than1 and not a prime number, a laser displacement sensor is arranged at the position, perpendicular to the measuring point, of a net wing tool of the wing, and an LVDT displacement sensor is connected between the laser displacement sensor and the measuring point in a bridging mode. The method is used for solving the problem that the spatial displacement field of the wing cannot be settled and constructed due to the fact that the accurate spatial coordinates of the strain gauges cannot be determined by adopting a single sensor network in allusion to the flexural deflection problem generated duringflight of an aircraft wing structure with a high aspect ratio.

Description

technical field [0001] The present application relates to the technical field of curved surface displacement field reconstruction, and in particular to a method, device and equipment for curved surface deflection displacement field reconstruction. Background technique [0002] Distributed sensor data surface reconstruction, that is, to establish a distributed sensor network, use sensor data combined with surface characteristics to establish surface equations, calculate and reconstruct the surface structure. [0003] Although the traditional strain gauge or fiber Bragg grating (FGB) distributed sensor network requires relatively few sensors, the FGB distributed sensor fiber core has poor shear stress resistance and is prone to breakage, so it is not suitable for engineering. [0004] For the large-aspect-ratio wing structure of an aircraft, the deflection deformation (referred to as deflection) during flight cannot be determined by using a single sensor network. The exact spa...

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Problems solved by technology

[0005] This application provides a reconstruction method, device and equipment for curved surface deflection displacement field, which is used to solve the problem of deflection deformation during flight for aircraft with large aspect ratio wing structure, and the strain cannot be determined by using a single sensor network The exact spatial coordinates of the slice, so that the problem of not being able to settle and construct the spatial displacement field of the wing

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