Observer-based fault detection and isolation for structured systems

摘要: Fault detection and isolation (FDI) problems are here consid- ered for linear systems with faults disturbances. We design a set of ob- server-based residuals in such way that the transfer from disturbances to is zero, al- lows fault isolation. interested obtaining function either diagonal structure (i.e., dedicated struc- tured set) or triangular one. deal this problem when system under consideration structured. That is, entries matrices fixed zeros free parameters. To structured system, one can associate natural directed graph. then provide necessary sufficient conditions which FDI have solution almost any value These simply expressed terms input-output paths associated Index Terms—Fault isolation, graph theory, model-based approach, residuals, systems.