Retrofit systems for reconfiguration in civil aviation

Abstract

This paper outlines a new concept for retrofitting a reconfiguration module to an existing control law. The concept is motivated by the need for low cost, add-on modules that improve air safety in the existing fleet of civil air transport vehicles. A direct adaptive approach that accommodates control surface nonlinearities is adopted, which uses a slowly adapting model of the closed-loop aircraft as the reference model. The motivation,benefits, and components of the architecture are detailed. In addition, the issues of control surface magnitude and rate saturation are addressed. A proof of stability is outlined for input-error adaptation when position and rate saturation are present. using an F/A-18 nonlinear simulator. The primary adaptive component is demonstrated

Original document

The different versions of the original document can be found in:

• https://dspace.mit.edu/bitstream/1721.1/9264/2/45607726-MIT.pdf

• http://arc.aiaa.org/doi/pdf/10.2514/6.1999-3964,

http://dx.doi.org/10.2514/6.1999-3964

• https://dspace.mit.edu/handle/1721.1/9264,

https://arc.aiaa.org/doi/10.2514/6.1999-3964,

https://academic.microsoft.com/#/detail/1533529427