Flight control system validation using global nonlinear optimisation algorithms

In this paper the results from a validation of the functionality of Maneuver Load Limiter in the longitudinal control system for the generic aircraft simulation model ADMIRE, using global optimisation algorithms are presented. The analysis is based upon the reformulation of the nonlinear time domain simulation-based stability criterion Clonk, into a global optimisation problem. Results from both a traditional grid-based search for the worst uncertainty parameter combination and optimisation-based search with algorithms based upon a Genetic Algorithm and Adaptive Simulated Annealing are presented.