James R. Ottewill

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Variable speed drives are becoming increasingly popular as the source of power for three-phase induction motors. In addition to providing significant energy savings over Direct-On-Line arrangements, drives measure and compute many signals (e.g., electrical currents, estimated speed, torque), which can be used to detect various conditions in the motor or(More)
In this paper, a technique of merging typical process data with variables containing fast periodic oscillations is proposed for the purpose of detecting faults in industrial systems working under variable operating conditions. Analysing windows of the fast-oscillating signals allowed key features to be extracted from the data at the same rate at which the(More)
In this paper a graphical approach for Condition Monitoring Systems (CM) based on Model Driven Architecture is presented; in particular, the software application “Smart Monitoring Agent” or SMA. This graphical approach starts from the idea of modeling, applying and visualizing non-hierarchical relations. The presented method makes use of(More)
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