Online Monitoring of Aircraft Modal Parameters during Flight Test based on permanent Output-only Modal Analysis
| Autor: | Julian Sinske, Jan Schwochow, Ralf Buchbach, G. Jelicic, Yves Govers, Julian Springer |
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| Rok vydání: | 2017 |
| Předmět: |
020301 aerospace & aeronautics
Computer science Modal analysis Continuous monitoring online monitoring Control engineering 02 engineering and technology Aeroelasticity Flight test Operational Modal Analysis aircraft modal parameters 020303 mechanical engineering & transports Data acquisition Modal 0203 mechanical engineering Frequency domain flight test output-only modal analysis |
| DOI: | 10.2514/6.2017-1825 |
| Popis: | The process adopted for continuous monitoring of eigenfrequencies and damping ratios during the test flight of a research aircraft is presented. This comprises measurement hardware, distributed data acquisition system and software architecture in order to stream, store, and simultaneously analyze data with the methods of Operational Modal Analysis. The algorithms utilize only measured output time histories to identify modal parameters at different flight conditions. The autonomous implementations of the Stochastic Subspace Identification (SSI) and the Least-Square Complex Frequency domain (LSCF) algorithms provide estimations of the aeroelastic damping within a few seconds. |
| Databáze: | OpenAIRE |
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