Abstract
This work presents a notion of strong detectability for linear time-varying systems affected by unknown inputs. It is shown that this notion is equivalent to detectability of an auxiliary system without unknown inputs. This allows a straightforward observer design for dependable state estimation in the presence of unknown inputs. The design reduces to a deterministic Kalman filter design problem, where the observer gains can be obtained from the solution of a differential Riccati equation. The efficacy of the proposed approach is demonstrated by means of two examples.
Original language | English |
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Article number | 105398 |
Number of pages | 6 |
Journal | Systems & Control Letters |
Volume | 170 |
DOIs | |
Publication status | Published - 9 Nov 2022 |
Fields of Expertise
- Information, Communication & Computing