On Interconnected Observer Design for Nonlinear System

Mei Zhang (1) , Ze-Tao Li (1) , Michel Cabassud (2) , Boutaib Dahhou (3)

1 GZU - Guizhou University
2 LGC - Laboratoire de Génie Chimique
3 LAAS-DISCO - Équipe DIagnostic, Supervision et COnduite

This paper investigates the possibility of decomposing a control system into an interconnection of actuator and process subsystems; this allows monitoring the properties of the interconnected system globally and locally. For that, observer for the nonlinear interconnected system is studied. Specially, the interconnection between the two subsystems is assumed to be inaccessible to measurement. The aim is then to accurately estimate online the states vector of each subsystem, as well as the unknown interconnection. Numerical simulations confirm the effectiveness of the designed observer.

Mots clés: Interconnected system; Unknown interconnection; States estimation; Left invertibility; Actuator subsystem; Process subsystem

Domaines: Energie électrique; Automatique; Systèmes et contrôle [cs.SY]

Mei Zhang, Ze-Tao Li, Michel Cabassud, Boutaib Dahhou. On Interconnected Observer Design for Nonlinear System. 2019 International Conference on Modelling, Identification and Control (ICMIC 2019), Jul 2019, Tianjin, China. pp.1313-1323, ⟨10.1007/978-981-15-0474-7_123⟩. ⟨hal-02943938⟩