This paper proposes an active fault tolerant control scheme to cope with faults or failures affecting the flywheel spin rate sensors or satellite reaction wheel motors. The active fault tolerant control system consists of a fault detection and diagnosis module along with a control allocation and fault accommodation module directly exploiting the on-line fault estimates. The use of the nonlinear geometric approach and radial basis function neural networks allows to obtain a precise fault isolation, independently from the knowledge of aerodynamic disturbance parameters, and to design generalised estimation filters, which do not need a priori information about the internal model of the signal to be estimated. The adaptive control allocation and sensor fault accommodation can handle both temporal faults and failures. Simulation results illustrate the convincing fault correction and attitude control performances of the proposed system.

Adaptive FTC based on control allocation and fault accommodation for satellite reaction wheels

BALDI, PIETRO;CASTALDI, PAOLO;MIMMO, NICOLA;
2016

Abstract

This paper proposes an active fault tolerant control scheme to cope with faults or failures affecting the flywheel spin rate sensors or satellite reaction wheel motors. The active fault tolerant control system consists of a fault detection and diagnosis module along with a control allocation and fault accommodation module directly exploiting the on-line fault estimates. The use of the nonlinear geometric approach and radial basis function neural networks allows to obtain a precise fault isolation, independently from the knowledge of aerodynamic disturbance parameters, and to design generalised estimation filters, which do not need a priori information about the internal model of the signal to be estimated. The adaptive control allocation and sensor fault accommodation can handle both temporal faults and failures. Simulation results illustrate the convincing fault correction and attitude control performances of the proposed system.
Proceedings of the 3rd International Conference on Control and Fault-Tolerant Systems (SysTol 2016)
672
677
CONFERENCE ON CONTROL AND FAULT-TOLERANT SYSTEMS
Baldi, P; Blanke, M.; Castaldi, P.; Mimmo, N.; Simani, S.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/591308
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