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Robust fault detection in descriptor linear systems via generalized unknown input observers. (English) Zbl 1038.93062
The robust residual generation in descriptor linear systems with unknown disturbances is considered using the generalized full-order state observers. A parametric approach is proposed for decoupling the effect of a disturbance from the residual signal. The approach is based on the state-feedback eigenstructure assignment for descriptor systems and the general disturbance decoupling problem in regular descriptor linear systems. An example shows the effect of the proposed approach.
MSC:
93C73Perturbations in control systems
93B07Observability
90B25Reliability, availability, maintenance, inspection, etc. (optimization)
34A09Implicit equations, differential-algebraic equations
93B52Feedback control
93B60Eigenvalue problems in systems theory