An Improved Zonotopic Approach Applied to Fault Detection for Takagi-Sugeno Fuzzy Systems
Résumé
In this work, an actuator fault detection problem
for discrete-time Takagi-Sugeno fuzzy systems is tackled in
a bounded error context where both state disturbances and
measurement noise are assumed to be unknown but bounded
with known bounds. First, a peak-to-peak performance synthesis
method is applied to design a robust residual generator against
the considered process disturbances and measurement noise.
Meanwhile, an improved zonotopic approach is proposed to
compute tight adaptive thresholds for residual evaluation. Then,
a reliable set-membership fault detection strategy with the aid of
generated residual signals and adaptive thresholds is introduced.
Finally, the viability of the proposed method is demonstrated via
a numerical simulation. Then, an experimentation on a 3D Crane
system is performed to show its practicability.