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Displacement Sensor Fault Tolerance for Hydraulic Servo Axis
| Content Provider | Semantic Scholar |
|---|---|
| Author | Münchhof, Marco |
| Copyright Year | 2008 |
| Abstract | In this paper, a fault management system for a hydraulic servo axis is described. This system is capable of sustaining faults in the piston displacement sensor of the position-controlled hydraulic servo axis. By means of a parity equation based fault detection stage, faults in the displacement sensor as well as other sensors and components of the servo axis can be detected and subsequently be diagnosed by means of a fuzzy-logic based reasoning system. Upon the diagnosis of a piston displacement sensor fault, the system switches to a “model-sensor” which provides an estimate for the piston position. To ensure the utmost model fidelity of the model sensor, the model parameters are constantly updated by means of parameter estimation during the fault-free operation of the servo axis. Experiments at a hydraulic servo axis conclude this paper and show the high quality of the reconstructed piston displacement sensor signal. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://folk.ntnu.no/skoge/prost/proceedings/ifac2008/data/papers/1479.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Apache Axis Axis vertebra Displacement mapping Display resolution Estimation theory Experiment Fault detection and isolation Fault tolerance Fuzzy logic Genus Axis Network switch Optic axis of a crystal Population Parameter Psychologic Displacement Reasoning system Servo Device Component Switch Device Component sensor (device) |
| Content Type | Text |
| Resource Type | Article |
