2134/21204
Jinya Su
Jinya
Su
Wen-Hua Chen
Wen-Hua
Chen
Baibing Li
Baibing
Li
High order disturbance observer design for linear and nonlinear systems
Loughborough University
2016
Disturbance observer
Fault diagnosis
High order disturbance
Minimal order
Nonlinear systems
Engineering not elsewhere classified
2016-05-12 13:08:57
Conference contribution
https://repository.lboro.ac.uk/articles/conference_contribution/High_order_disturbance_observer_design_for_linear_and_nonlinear_systems/9221933
© 2015 IEEE. In this paper, a disturbance observer is proposed for nonlinear systems with high order disturbance, where not only disturbance but also its high order derivatives are estimated. The relationship of the proposed observer with the existing results is discussed. Then, the result is further extended to the case of minimal-order output-based disturbance observer design for linear systems subject to high order disturbances. Two practical examples about actuator fault diagnosis for a nonlinear missile system and disturbance estimation for a double-effect pilot plant evaporator system with unobservable states are provided to illustrate the effectiveness of the proposed approaches.