Limited Authority Adaptive Flight Control for Reusable Launch Vehicles

Eric N. Johnson, Anthony J. Calise

Research output: Contribution to journalArticle

156 Citations (Scopus)

Abstract

In the application of adaptive flight control, significant issues arise due to limitations in the plant inputs, such as actuator displacement limits, actuator rate limits, linear input dynamics, and time delay. A method is introduced that allows an adaptive law to be designed for the system without these input characteristics and then to be applied to the system with these characteristics, without affecting adaptation. This includes allowing correct adaptation while the plant input is saturated and allows the adaptation law to function when not actually in control of the plant. To apply the method, estimates of actuator positions must be found. However, the adaptation law can correct for errors in these estimates. Proof of boundedness of system signals is provided for a single hidden-layer perceptron neural network adaptive law. Simulation results utilizing the methods introduced for neural network adaptive control of a reusable launch vehicle are presented for nominal flight and under failure cases that require considerable adaptation.

Original languageEnglish (US)
Pages (from-to)906-913
Number of pages8
JournalJournal of Guidance, Control, and Dynamics
Volume26
Issue number6
DOIs
StatePublished - Jan 1 2003

Fingerprint

reusable launch vehicles
flight control
Flight Control
Launch vehicles
Adaptive Control
Actuators
flight
Neural networks
Actuator
actuators
Signal systems
Neural Networks
Time delay
self organizing systems
adaptive control
estimates
Perceptron
Estimate
Categorical or nominal
Boundedness

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Aerospace Engineering
  • Space and Planetary Science
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

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Limited Authority Adaptive Flight Control for Reusable Launch Vehicles. / Johnson, Eric N.; Calise, Anthony J.

In: Journal of Guidance, Control, and Dynamics, Vol. 26, No. 6, 01.01.2003, p. 906-913.

Research output: Contribution to journalArticle

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