Fault tolerant control : the pseudo-inverse method revisited
Abstract
The pseudo-inverse method (PIM) provides the faulty system with some optimal behavior, in the sense that the Frobenius norm based distance between the closed loop model of the faulty system and some given reference model is minimized. Stability issues are considered in the Modified PIM (MPIM). This paper proposes to use a set of admissible models, rather than searching for an optimal one which does not provide any stability / adequation guarantee. The approach allows to characterize the set of accommodable faults, and to quantify the robustness of the fault adaptation scheme.
