Test Process Optimization Of Space Launch System And Fault Diagnosis Software Design And Implementation

The aerospace launch system is a large and complex device with multiple subsystems.To ensure the successful launch of aerospace products,pre-launch testing is a necessary link before it leaves the ground.How to design an effective test model for aerospace launch systems,use fault diagnosis and inference algorithms to shorten the test process,and realize rapid and real-time diagnosis of aerospace launch system faults is an urgent need for aerospace launch system testing.In response to this demand,the main research work of this article is:1.Software requirements analysis and overall design.The software is divided into three modules according to functions.These are test model analysis,optimal test sequence generation and real-time fault diagnosis module.Using QT Creator as the software de-velopment platform,the overall structure of the software is designed.Use dynamic link library technology as the integration scheme of each software module.1.Testability model analysis of space launch system.Based on the comparison of the existing testability models,the advantages of the multi-signal model in the space launch system are analyzed.Taking an electrostatic comprehensive test system as an example,the testability modeling method is introduced in detail,and many The fault dependent matrix related to the fault signal is used as the core of the software to process the data.3.Use the test point selection algorithm based on the combination of particle swarm optimization and AO*algorithm to design the optimal test generation module.At the same time,a real-time diagnosis and reasoning algorithm is used to quickly locate the fault according to the test information,thus realizing the need for real-time diagnosis.Also the graphical interfaces of the two modules are designed,and diagnostic commands are sent and received with the remote control host through UDP communication.4.According to the provided indicators,the function and feasibility of the software are verified through examples,which proves that the software can meet the diagnostic index requirements of the space launch system,and the software can provide effective and reliable guarantee for the test process of the space launch system.