Title :
Analysis, detection and estimation of soft failures for strapdown inertial navigation system
Author :
Qin, Z.X. ; Zhang, H.Y. ; Cheng, H.L.
Author_Institution :
Beijing Univ. of Aeronaut. & Astronaut., China
Abstract :
This paper studies some typical soft failures patterns in strapdown inertial navigation system (SINS). The soft failure models and their effect on system performance are presented. Also, a detection and estimation method is proposed based on the parity equation and weighted recursive least square estimation algorithm. The proposed method is illustrated by a application example of re-entry spacecraft
Keywords :
aerospace control; failure analysis; inertial navigation; least squares approximations; recursive estimation; redundancy; space vehicles; failure detection; flight dynamics; least square estimation; parity equation; recursive estimation; redundancy; reentry spacecraft; soft failures; strapdown inertial navigation; Equations; Failure analysis; Inertial navigation; Least squares approximation; Noise measurement; Silicon compounds; Stochastic resonance; Temperature sensors; Time measurement; Working environment noise;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.610649
