Title :
Design of PI observer for bilinear systems with unknown input disturbance
Author :
Shafai, B. ; Yongfang Cheng
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
In this paper, we consider the problem of designing a proportional integral (PI) observer to estimate the state and unknown constant disturbance for bilinear time-invariant systems. The design of the proposed PI observer is based on Lyapunov stability. Sufficient conditions are given for the existence of a stable observer. The proposed observer can also be used in step-shaped fault detection. The effectiveness of this method is verified by numerical examples.
Keywords :
Lyapunov methods; PI control; control system synthesis; linear systems; observers; Lyapunov stability; PI observer; bilinear time-invariant systems; proportional integral observer; step-shaped fault detection; unknown input disturbance; Eigenvalues and eigenfunctions; Estimation error; Fault detection; Linear systems; Lyapunov methods; Nonlinear systems; Observers;
Conference_Titel :
Control Applications (CCA), 2012 IEEE International Conference on
Conference_Location :
Dubrovnik
Print_ISBN :
978-1-4673-4503-3
Electronic_ISBN :
1085-1992
DOI :
10.1109/CCA.2012.6402720
