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In this paper, performances of robust fault estimation are analyzed for a class of uncertain nonlinear systems. A novel robust fault estimation algorithm is first presented based on the assumption that the state variables are fully available. Then two approaches are provided to improve the speed and accuracy of robust fault estimation: One is the parameter choice of the fault estimation algorithm;...
Robust fault diagnosis is investigated for a class of uncertain nonlinear flight control systems based on the adaptive observer. A new general fault updating law is presented to relax the assumption conditions of the adaptive observer. In addition, a simplified fault updating law is further presented for the case of constant faults. The asymptotical stability of the adaptive observer and the uniform...
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