SwePub - search: WFRF:(Garuli Andrea)

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1.	Wallin, Ragnar, et al. (author) Applications of IQC-Based Analysis Techniques for Clearance 2012 In: Optimization Based Clearance of Flight Control Laws. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642226267 - 9783642226274 ; , s. 277-297 Book chapter (peer-reviewed)abstract Results for stability analysis of the nonlinear rigid aircraft model and comfort and loads analysis of the integral aircraft model are presented in this chapter. The analysis is based on the theory for integral quadratic constraints and relies on linear fractional representations (LFRs) of the underlying closed-loop aircraft models. To alleviate the high computational demands associated with the usage of IQC based analysis to large order LFRs, two approaches have been employed aiming a trade-off between computational complexity and conservatism. First, the partitioning of the flight envelope in several smaller regions allows to use lower order LFRs in the analysis, and second, IQCs with lower computational demands have been used whenever possible. The obtained results illustrate the applicability of the IQCs based analysis techniques to solve highly complex analysis problems with an acceptable level of conservativeness.

Wallin, Ragnar, et al. (author)
Applications of IQC-Based Analysis Techniques for Clearance
2012
In: Optimization Based Clearance of Flight Control Laws. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642226267 - 9783642226274 ; , s. 277-297
Book chapter (peer-reviewed)abstract
- Results for stability analysis of the nonlinear rigid aircraft model and comfort and loads analysis of the integral aircraft model are presented in this chapter. The analysis is based on the theory for integral quadratic constraints and relies on linear fractional representations (LFRs) of the underlying closed-loop aircraft models. To alleviate the high computational demands associated with the usage of IQC based analysis to large order LFRs, two approaches have been employed aiming a trade-off between computational complexity and conservatism. First, the partitioning of the flight envelope in several smaller regions allows to use lower order LFRs in the analysis, and second, IQCs with lower computational demands have been used whenever possible. The obtained results illustrate the applicability of the IQCs based analysis techniques to solve highly complex analysis problems with an acceptable level of conservativeness.

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