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A fault detection, identification, estimation and state estimation (FDIESE) problem involves joint decision and estimation (JDE). Decision contains detection and identification, while estimation is for fault severeness and system state. Both detection and identification are highly coupled with estimation and a fault is identified after detection. To solve this problem, an approach named nested joint...
This paper presents an approach to fault detection, identification, and state estimation (FDISE) for a dynamic system with abrupt total or partial failures. FDISE includes both decision and estimation and they are highly coupled. Decision includes fault detection and identification (FDI), while estimation is for failure magnitude and system state. Correct FDI benefits estimation and accurate estimation...
This paper is concerned with the problem of Hinfin performance optimization for NCSs with multiple sensors and actuators. The controller, sensors, and actuators employ a periodic time sequencing scheme for message transmissions, and the switched controller gains will introduce less conservatism than the common controller gain based method. By choosing appropriate Lyapunov function, sufficient conditions...
Electric actuator dual-redundancy servo system consists of dual-redundancy rare earth permanent magnet (REPM) brushless DC machine (BLDCM), digital signal processor (DSP) and some periphery circuits. Here, dynamic and static states of current symmetry on dual-redundancy working is emphatically investigated. It analyses the causes of current asymmetry and possible consequences, gives a method of current...
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