International Journal of Control, Vol.69, No.4, 499-517, 1998
State estimation and fault detection by a bank of continuous finite-memory filters
A continuous observer estimating the state vector of a linear time-invariant system from the measurements of the system's inputs and outputs passed through a bank of finite-memory filters is introduced. System observability is shown to guarantee the existence of the observer. An application of the observer to the problem of detecting and isolating sensor and actuator faults is discussed.