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The key attribute of a Fault Tolerant Control (FTC) system is its
ability to maintain overall system stability and acceptable
performance in the face of faults and failures within the feedback
system. In this book Integral Sliding Mode (ISM) Control Allocation
(CA) schemes for FTC are described, which have the potential to
maintain close to nominal fault-free performance (for the entire
system response), in the face of actuator faults and even complete
failures of certain actuators. Broadly an ISM controller based
around a model of the plant with the aim of creating a nonlinear
fault tolerant feedback controller whose closed-loop performance is
established during the design process. The second approach involves
retro-fitting an ISM scheme to an existing feedback controller to
introduce fault tolerance. This may be advantageous from an
industrial perspective, because fault tolerance can be introduced
without changing the existing control loops. A high fidelity
benchmark model of a large transport aircraft is used to
demonstrate the efficacy of the FTC schemes. In particular a scheme
based on an LPV representation has been implemented and tested on a
motion flight simulator.
The key attribute of a Fault Tolerant Control (FTC) system is its
ability to maintain overall system stability and acceptable
performance in the face of faults and failures within the feedback
system. In this book Integral Sliding Mode (ISM) Control Allocation
(CA) schemes for FTC are described, which have the potential to
maintain close to nominal fault-free performance (for the entire
system response), in the face of actuator faults and even complete
failures of certain actuators. Broadly an ISM controller based
around a model of the plant with the aim of creating a nonlinear
fault tolerant feedback controller whose closed-loop performance is
established during the design process. The second approach involves
retro-fitting an ISM scheme to an existing feedback controller to
introduce fault tolerance. This may be advantageous from an
industrial perspective, because fault tolerance can be introduced
without changing the existing control loops. A high fidelity
benchmark model of a large transport aircraft is used to
demonstrate the efficacy of the FTC schemes. In particular a scheme
based on an LPV representation has been implemented and tested on a
motion flight simulator.
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