Abstract The flexible aircraft described in Chapter [2] is modelled as a collection of linear time-invariant models which correspond to different combinations of aircraft payload configurations and flight conditions. In this chapter we propose a methodology to convert such a set of models into a linear fractional representation (LFR), to be used in several robustness analysis methods. The modelling challenge consists in building a unique LFR starting from a set of large order state-space models, having different sizes and different physical meanings of state vectors. The resulting LFR has a moderate size and satisfactorily approximates the aircraft behaviour, by providing almost exact match of the system eigenvalues and frequency responses. This model serves as basis of the clearance techniques relying on μ-analysis, Lyapunov-based analysis and IQC-based analysis.
Generation of LFRs for a Flexible Aircraft Model
2012-01-01
19 pages
Article/Chapter (Book)
Electronic Resource
English
State-Space Model Generation for Flexible Aircraft
Online Contents | 2004
|State-Space Model Generation for Flexible Aircraft
AIAA | 2004
|