| Abstract: | To realize real time fault detection and
diagnosis when multi-sensors have faults simultaneously in the linear control system, a
set of two-ellipsoid confidence regions was constructed based on two-ellipsoid overlap
method. Each two-ellipsoid confidence region was used to detect the faults of the
concerned sensor. Two-ellipsoid overlap method can be applied to linear control systems
where multi-sensors have faults simultaneously. This method can give the time the faults
occur quickly and accurately, and find the faulty sensors. A method of choosing the degree
of confidence was studied which leads to a low degree of missing alarm. |
