Flight Test of an L1 Adaptive Controller on the NASA AirSTAR Flight Test Vehicle

Gregory, Irene M.; Xargay, Enric; Cao, Chengyu; Hovakimyan, Naira

doi:10.2514/6.2010-8015

Cited by 85 publications

(60 citation statements)

References 22 publications

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“…This approach defining and updating compensation for matched and unmatched uncertainty in the state feedback formulation has been successfully flight tested on NASA GTM aircraft, e.g. see Ref [11].…”

Section: Adaptive Lawmentioning

confidence: 99%

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Integrated Flight/Structural Mode Control for Very Flexible Aircraft Using L1 Adaptive Output Feedback Controller

Che

Cao

Gregory³

2012

AIAA Guidance, Navigation, and Control Conference

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Section: Adaptive Lawmentioning

confidence: 99%

“…(8), there are two augmentation control signals, ( ) m u t and ( ) um u t , for matched and unmatched uncertainties respectively. This control law is inspired by a successful application in Ref [11]. In this paper the control law is further modified to be suitable for highly flexible vehicles.…”

Section: Control Law Designmentioning

confidence: 99%

Integrated Flight/Structural Mode Control for Very Flexible Aircraft Using L1 Adaptive Output Feedback Controller

Che

Cao

Gregory³

2012

AIAA Guidance, Navigation, and Control Conference

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“…These capabilities enable off-nominal conditions mitigation, upset prevention, and safe maneuvering and landing of the aircraft. Some recent research accomplishments in effectively mitigating vehicle failure and damage effects using adaptive control techniques are described in References [8] and [9], and recent results on trajectory generation and guidance under off-nominal conditions are given in References [10], [11], and [12]. Moreover, utilization of key flight safety components as control objectives would explicitly provide some measure of flight safety assurance through the resilient control function.…”

Section: B Resilient Guidance and Controlmentioning

confidence: 99%

Future Integrated Systems Concept for Preventing Aircraft Loss-of-Control Accidents

Belcastro

Jacobson

2010

AIAA Guidance, Navigation, and Control Conference

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Loss of control remains one of the largest contributors to aircraft fatal accidents worldwide. Aircraft loss-of-control accidents are highly complex in that they can result from numerous causal and contributing factors acting alone or (more often) in combination. Hence, there is no single intervention strategy to prevent these accidents. This paper presents future system concepts and research directions for preventing aircraft loss-ofcontrol accidents.

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“…In the current L 1 FCS, the pilot adjusts directly the thrust level using the throttle lever. The reader is referred to [16,17] for a more detailed explanation of the L 1 FCS implemented on the NASA AirSTAR flight test vehicle.…”

Section: L 1 Flight Control System Design For Airstar Gtm T2mentioning

confidence: 99%

L1 Adaptive Flight Control System: Systematic Design and Verification and Validation of Control Metrics

Xargay

Hovakimyan²,

Dobrokhodov

et al. 2010

AIAA Guidance, Navigation, and Control Conference

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This paper presents preliminary results of the application of the Parameter Space Investigation method for the design of the L1 flight control system implemented on the two turbine-powered dynamically-scaled GTM AirSTAR aircraft. In particular, the study addresses the construction of the feasible solution set and the improvement of a nominal prototype design, obtained using the systematic design procedures of the L1 adaptive control theory. On the one hand, the results in the paper demonstrate the benefits of L1 adaptive control as a verifiable robust adaptive control architecture by validating the theoretical claims in terms of robustness and performance, as well as illustrating its systematic design procedures. On the other hand, the paper confirms the suitability of the Parameter Space Investigation method for the multicriteria design optimization of a flight control system subject to desired control specifications. Also, in order to facilitate the multicriteria analysis process, this study takes advantage of the Multicriteria Optimization and Vector Identification software package, which was designed to apply the Parameter Space Investigation method to engineering problems. The results and conclusions of this paper have contributed to the improvement of the (predicted) flying qualities and the robustness margins of the all-adaptive L1-augmented GTM AirSTAR aircraft.

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Flight Test of an L1 Adaptive Controller on the NASA AirSTAR Flight Test Vehicle

Cited by 85 publications

References 22 publications

Integrated Flight/Structural Mode Control for Very Flexible Aircraft Using L1 Adaptive Output Feedback Controller

Integrated Flight/Structural Mode Control for Very Flexible Aircraft Using L1 Adaptive Output Feedback Controller

Future Integrated Systems Concept for Preventing Aircraft Loss-of-Control Accidents

L1 Adaptive Flight Control System: Systematic Design and Verification and Validation of Control Metrics

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