The Generic Number of Invariant Zeros of a Structured Linear System
SIAM Journal on Control and Optimization
Brief paper: State and input observability for structured linear systems: A graph-theoretic approach
Automatica (Journal of IFAC)
Brief paper: A structural approach to detectability for a class of hybrid systems
Automatica (Journal of IFAC)
Observability of linear hybrid systems
HSCC'03 Proceedings of the 6th international conference on Hybrid systems: computation and control
International Journal of Systems Science
Automatica (Journal of IFAC)
Observability of switched linear systems in continuous time
HSCC'05 Proceedings of the 8th international conference on Hybrid Systems: computation and control
Survey Generic properties and control of linear structured systems: a survey
Automatica (Journal of IFAC)
Simultaneous state and input estimation of hybrid systems with unknown inputs
Automatica (Journal of IFAC)
| Hi-index | 22.14 |
This paper deals with the problem of additional sensor placement in order to recover the discrete mode observability of switching structured linear systems with unknown inputs. Such a property is quite important for designing control laws, observers, fault detection and isolation schemes (when the fault occurrence implies a commutation between two modes), and so on. The proposed method, based on a graph-theoretic approach, assumes only the knowledge of the system's structure. We express, in graphical terms, new necessary and sufficient conditions for discrete mode generic observability. When these conditions are not satisfied, we propose a sensor placement procedure which allows us to recover the mode observability. Our approach can be implemented by classical and quite simple graph-theory algorithms.