Adaptive augmentation of a new baseline control architecture for tail-controlled missiles using a nonlinear reference model

Florian Peter, Miguel Leitão, Florian Holzapfel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

22 Scopus citations

Abstract

An adaptive augmented Nonlinear Dynamic Inversion (NDI) control structure based on a nonlinear reference model is developed for a highly agile, tail-controlled surface-to-air missile. Due to a modular control design, the missile is able to perform skid-to-turn (STT) and bank-while-turn (BWT) maneuvers. The focus of this paper lies on the nonlinear reference model and the respective change in the NDI error feedback architecture. In order to overcome the non-minimum phase property of tail-controlled missiles, a conversion of the pitch- and yaw-acceleration, which renders the system minimum phase is conducted. A nonlinear reference model featuring all the main nonlinear effects of the missile dynamics is developed. With such a nonlinear command filter, the closed-loop system fully exploits the physical capabilities of the plant. Based on a classical two-loop inversion strategy, the design of the NDI error feedback baseline controller is adjusted in accordance to the modification of the reference model. By making use of NDI, the tracking problem is transformed into a stabilizing problem with an almost linear error dynamics. This makes the system perfectly suitable for using a Model Reference Adaptive Control (MRAC) approach as an adaptive layer, which is able to cope with modeling errors and sensor biases. The autopilot design proved its robustness and performance under a large spectrum of uncertainty combinations using Monte Carlo simulations.

Original languageEnglish
Title of host publicationAIAA Guidance, Navigation, and Control Conference 2012
StatePublished - 2012
Externally publishedYes
EventAIAA Guidance, Navigation, and Control Conference 2012 - Minneapolis, MN, United States
Duration: 13 Aug 201216 Aug 2012

Publication series

NameAIAA Guidance, Navigation, and Control Conference 2012

Conference

ConferenceAIAA Guidance, Navigation, and Control Conference 2012
Country/TerritoryUnited States
CityMinneapolis, MN
Period13/08/1216/08/12

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