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The various faults that inevitably occur represent a primary issue in satellite on-orbit operation. Fault diagnosis is the first step in the fault control process. As a means to perform this step, a semi-supervision fault diagnosis method via attitude information is proposed for a satellite. This method combines static fusion with dynamic updating. The evidence concept is employed to obtain the fault...
A rigid satellite fault diagnosis strategy, subject to faults of external disturbances and thruster faults, is developed. In this design, an equivalent idea is introduced to design a sliding mode observer that can detect and identify the failures indicated previously. Considering the measurability of parameters of the satellite, such as angular velocity and attitude, a sliding mode observer is implemented...
With the continuous development of computer science and control science, the complexity of the system also increased rapidly. Accordingly, people began to improve the security and stability of the systems, and fault diagnosis in time is an effectively method to reduce the loss of property. The reality systems are invariably more complex, nonlinear and non-Gaussian. The previous method cannot solve...
Particle filter (PF) serves as an effective method applied to the fault diagnosis of nonlinear and non-Gaussian systems. However, the result of state estimation is influenced by the particle impoverishment problem which is common in the typical PF algorithm. Based on the analysis of the PF algorithm, the general particle impoverishment problem is attributed to the deficiency of particle diversity...
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