In this paper a hardware redundancy based actuator-FDI method was proposed and validated experimentally for a 1/10 scaled laboratory model of a heavy metro vehicle car body. The concept, which is based on additional sensors collocated with the actuators to be monitored is inexpensive, reliable, and robust since the only parameter to be obtained from experiments is the static gain of the actuator/sensor transfer functions that acts as a working point around which deviations are defined. Furthermore, this gain is hardly influenced by changing vehicle load conditions, since the local stiffness in the vicinity of the actuator is not influenced by such uncertainties. Utilizing the proposed algorithm actuator faults of 10 % and 100 % where successfully detected in the experiments. Future work is concerned with the investigation of nonlinear actuator phenomena.
An actuator fault detection concept for active vibration control of a heavy metro vehicle
2007
8 Seiten, 12 Bilder, 10 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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