An airborne miniaturized structural health monitoring system and monitoring method thereof

Abstract

The invention discloses an onboard miniaturization structure health monitoring system and a monitoring method of the system, and belongs to the technical field of structure health monitoring. The health monitoring system comprises a core execution module, a power amplification module, a channel switching module, a system power supply module and a signal interface module. An input end of the system power supply module is connected with an onboard power supply through the signal interface module, an output end of the system power supply module is respectively connected with the core execution module, the power amplification module and the channel switching module, an output end of the power amplification module is connected with an input end of the channel switching module, the signal interface module is connected with the channel switching module, and the power amplification module and the channel switching module are respectively connected with the core execution module. The system and the monitoring method can achieve excitation, responding, channel switching and damage diagnosis tasks on line, and realizes large-area on-line health monitoring and damage diagnosis for the structure of a plane.

Description

technical field [0001] The invention relates to an airborne miniaturized structural health monitoring system and a monitoring method thereof, belonging to the technical field of structural health monitoring. Background technique [0002] The safe service of complex mechanical systems is of great importance to many fields of national defense and civilian use. Aircraft systems are a complex class of mechanical systems that are high in value and cost to maintain. It is of great significance to implement health monitoring and management of aircraft. In addition to reducing economic losses and preventing major accidents, it can also achieve condition-based maintenance and greatly reduce maintenance costs. As an extremely important part of aircraft health monitoring and management, aircraft structure health monitoring and management is regarded as a key technology to ensure the use of aircraft structures, especially composite material structures, improve aircraft safety, and redu...

AI Technical Summary

Problems solved by technology

The system is based on the internal bus, the controller module is the core of signal processing and damage diagnosis, and the digital management module is the core of hardware scheduling. The size and power consumption cannot meet the requirements of airborne use, and under the current technical conditions, stable and reliable airborne online structural health monitoring cannot be realized

In addition, in the field of structural health monitoring technology based on piezoelectric sensor arrays and Lamb waves, no system task workflow suitable for airborne online monitoring has been proposed, and this task workflow is an important factor to ensure the stable and reliable operation of system software. Base

[0005]So far, the proposed structural health monitoring system based on piezoelectric sensor array and Lamb wave structural health monitoring technology, due to its complex internal structure, large volume, High power consumption, heavy weight, and lack of standardized airborne workflow, so it is limited to laboratory research and ground offline monitoring applications, without real airborne online monitoring, and cannot meet the urgent requirements of aircraft structural health monitoring and management application requirements

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