Real-time monitoring method of pressure center load of wing based on strain actually measured through fiber grating

Abstract

The invention provides a real-time monitoring method of pressure center load of a wing based on strain actually measured through a fiber grating. The method comprises following steps of 1, adhering a fiber grating sensor on the wing; 2, acquiring strain actually measured by the fiber grating sensor; 3, analyzing the pressure center load of the wing; and 4, calculating the pressure center load of the wing. In this way, by use of the strain data actually measured by the fiber grating adhered to the wing, the pressure center load of the wing is calculated, so the effect is achieved that the pressure center load of the wing can be acquired only by use of the strain data actually measured by the fiber grating without other information like wing load and the wind structure, so an actual problem is solved that real-time monitoring is performed on the pressure center load of the wing only based on the strain data actually measured by the fiber grating is solved.

Description

Technical field: [0001] The invention provides a method for real-time monitoring of wing pressure core load based on the measured strain of fiber grating, and specifically relates to obtaining the equivalent tension at the position of wing pressure core by using the measured strain measured by optical fiber grating, so as to realize the real-time monitoring of wing pressure core load. The monitoring is suitable for real-time monitoring of the pressure core load on the wing of the aircraft by using the measured strain measured by the fiber grating on the aircraft in service and in the aircraft fatigue test of the entire aircraft, and belongs to the technical field of test and measurement. Background technique: [0002] The wing of an aircraft is one of the important structural components of the aircraft and a key factor to ensure the safe flight of the aircraft. During the entire life cycle of the aircraft, the aircraft wing will experience a specific load history, which is a...

AI Technical Summary

Problems solved by technology

At present, my country has not realized the long-term, real-time online monitoring of the equivalent load of the pressure center position of the wing of the aircraft in service. The existing method of wing load research is based on the monitoring method of strain gauges. This method only Short-term monitoring of individual aircraft can be realized, and the measurement equipment is complicated, the calibration process is cumbersome, and the reliability is low. It is impossible to calibrate every aircraft in service, and it is impossible to realize long-term, real-time online monitoring of aircraft

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