TY - GEN

T1 - Delayed feedback attitude control using neural networks and Lyapunov-Krasovskii functionals

AU - Samiei, Ehsan

AU - Nazari, Morad

AU - Butcher, Eric A.

AU - Schaub, Hanspeter

PY - 2012

Y1 - 2012

N2 - This paper addresses the regulation control and stabilization problem of spacecraft attitude dynamics when there exists an unknown constant discrete delay in the measurements. Radial basis function neural networks are used to approximate the kinematics and inertial nonlinearities while a back propagation algorithm is employed to update neural network weights. By employing a Lyapunov- Krasovskii functional, a delay independent stability condition is obtained in terms of a linear matrix inequality, the solution of which gives the suitable controller gains. Finally, to show the effectiveness of the proposed controller, a set of simulations are performed and the results of the proposed control strategy are compared with results obtained using the method for delayed attitude control suggested by Ailon et al.1.

AB - This paper addresses the regulation control and stabilization problem of spacecraft attitude dynamics when there exists an unknown constant discrete delay in the measurements. Radial basis function neural networks are used to approximate the kinematics and inertial nonlinearities while a back propagation algorithm is employed to update neural network weights. By employing a Lyapunov- Krasovskii functional, a delay independent stability condition is obtained in terms of a linear matrix inequality, the solution of which gives the suitable controller gains. Finally, to show the effectiveness of the proposed controller, a set of simulations are performed and the results of the proposed control strategy are compared with results obtained using the method for delayed attitude control suggested by Ailon et al.1.

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M3 - Conference contribution

AN - SCOPUS:84879376089

SN - 9780877035817

T3 - Advances in the Astronautical Sciences

SP - 949

EP - 966

BT - Spaceflight Mechanics 2012 - Advances in the Astronautical Sciences

T2 - 22nd AAS/AIAA Space Flight Mechanics Meeting

Y2 - 2 February 2012 through 2 February 2012

ER -