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A fault tolerant direct control allocation scheme with integral sliding modes

Mirza Tariq Hamayun;  Christopher Edwards;  Halim Alwi;  Abdulrahman Bajodah — 2015

International Journal of Applied Mathematics and Computer Science

In this paper, integral sliding mode control ideas are combined with direct control allocation in order to create a fault tolerant control scheme. Traditional integral sliding mode control can directly handle actuator faults; however, it cannot do so with actuator failures. Therefore, a mechanism needs to be adopted to distribute the control effort amongst the remaining functioning actuators in cases of faults or failures, so that an acceptable level of closed-loop performance can be retained. This...

Sliding mode methods for fault detection and fault tolerant control with application to aerospace systems

Christopher Edwards;  Halim Alwi;  Chee Pin Tan — 2012

International Journal of Applied Mathematics and Computer Science

Sliding mode methods have been historically studied because of their strong robustness properties with regard to a certain class of uncertainty, achieved by employing nonlinear control/injection signals to force the system trajectories to attain in finite time a motion along a surface in the state-space. This paper will consider how these ideas can be exploited for fault detection (specifically fault signal estimation) and subsequently fault tolerant control. It will also describe applications of...

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