Title :
Twin rotor fault diagnosis based on robust observer: An experimental study
Author :
Liu Lihua ; Xiukun Wei ; Liu Xiaohe
Author_Institution :
Beijing Inf. Sci. & Technol. Univ., Beijing, China
Abstract :
This paper considers the fault detection problem of a twin rotor system. By using the GKYP lemma and LMIs, the fault detection robust observer is designed in a finite frequency domain, where the H- index is applied to maximized the sensitivity of the observer to the fault. A model for the twin rotor is derived and an experimental study is carried out. Several sensor fault scenarios are investigated. The results show that the H-/H∞ robust observer can detect the considered faults successfully. It outperforms the H-/H∞ robust observer designed in the entire frequency domain.
Keywords :
DC motors; H∞ control; fault diagnosis; linear matrix inequalities; observers; robust control; rotors; transfer functions; GKYP lemma; H∞ robust observer; LMI; finite frequency domain; linear matrix inequalities; observer sensitivity; robust observer; sensor fault scenarios; twin rotor fault diagnosis; twin rotor system; Fault detection; Frequency-domain analysis; Observers; Propellers; Robustness; Rotors; Vectors; Fault detection observer; Generalized KYP lemma; H∞/H− index; LMIs; Twin rotor;
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
