Robust H∞ fault diagnosis observer design for multiple satellites attitude synchronization with disturbance
Weixin Han, Zhenhua Wang, Yi Shen · 2016
This paper develops distribute fault estimation observer (DFEO) for attitude synchronization of multiple satellites with disturbances. The intermittent fault is mainly considered. More specifically, identical satellite attitude dynamics are built and the global attitude synchronization systems are obtained with undirected graph communication topology firstly. For each satellites, robust H∞DFEO is presented to estimate intermittent fault using relative information between neighbour satellites. Then the errors of DFEO and original system at each satellites construct a global error system. Next, robust H∞DFEO gain is calculated by linear matrix inequality (LMI) based on global error system. Using decomposition technique, simple LMIs are obtained. Finally, a numerical simulation of multiple satellites attitude synchronization is presented to illustrate the effectiveness of the approach.