Title :
Application of a robust nonlinear fault detection observer to a hydraulic system
Author :
Shields, D.N. ; Daley, S.
Author_Institution :
Math.-MIS, Coventry Univ., Coventry, UK
Abstract :
This paper proposes a fault detection method for a fairly wide class of nonlinear systems based on a nonlinear observer. Various other methods proposed in the field are related to this method or are special cases of it. The observer is designed such that the error dynamics are independent of state, input, output and unknown disturbances. Necessary conditions are given for the observer to exist and to be robust with respect to an unknown input. Applications are made to a hydraulic system.
Keywords :
fault diagnosis; hydraulic control equipment; hydraulic systems; nonlinear control systems; observers; robust control; error dynamics; hydraulic system; input disturbances; necessary conditions; nonlinear systems; observer design; output disturbances; robust nonlinear fault detection observer; state disturbances; unknown disturbances; Fault detection; Hydraulic systems; Mathematical model; Nonlinear systems; Numerical models; Observers; Robustness; Applications; Fault Detection; Nonlinear; Observer;
Conference_Titel :
Control Conference (ECC), 1997 European
Conference_Location :
Brussels
Print_ISBN :
978-3-9524269-0-6
