摘要：This paper proposes a reliability monitoring scheme for active fault tolerant control
systems using a stochastic modeling method. The reliability index is defined based on
system dynamical responses and a safety region; the plant and controller are assumed to
have a multiple regime model structure, and a semi-Markov model is built for reliability
evaluation based on the safety behavior of each regime model estimated by using Monte
Carlo simulation. Moreover, the history data of fault detection and isolation decisions is
used to update its transition characteristics and reliability model. This method provides an
up-to-date reliability index as demonstrated on an aircraft model.
