Observability analysis and sensor placement

Didier Maquin (1) , Marie Luong (1) , José Ragot (1)

1 CRAN - Centre de Recherche en Automatique de Nancy

The quality of the state estimation of a system is strongly conditioned by the number of measurements obtained from this system. Here, this dependence is studied by specifying especially the influence of the number and the position of sensors as well as of their precision. When some variables are necessary for the control, the possibility of failure of some sensors is analysed from the calculation of the whole system reliability. The reciprocal problem is also presented: what is the measurement system allowing to respect some constraints on the observability, the redundancy and the reliability.

Keywords: Sensor placement; observability; redundancy; reliability; control system design; sensor failures; measurement system

Domains: Automatic

Didier Maquin, Marie Luong, José Ragot. Observability analysis and sensor placement. IFAC/IMACS Symposium on Fault Detection, Supervision and Safety for Technical Processes, SAFEPROCESS'94, Jun 1994, Espoo, Finland. pp.754-759. ⟨hal-00302900⟩