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Browsing by Author "Heyns, T"

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Combining discrepancy analysis with sensorless signal resampling for condition monitoring of rotating machines under fluctuating operations

Author: Heyns, T ; Heyns, PS ; Zimroz, R Date: Dec 2012 This paper proposes a novel framework for monitoring the condition of a rotating machine (for example a gearbox or a bearing) that may be subject to load and speed fluctuations. The methodology is especially relevant in situations where no ... Read more
Combining synchronous averaging with a Gaussian mixture model novelty detection scheme for vibration-based condition monitoring of a gearbox

Author: Heyns, T ; Heyns, PS ; De Villiers, JP Date: Oct 2012 This paper investigates how Gaussian mixture models (GMMs) may be used to detect and trend fault induced vibration signal irregularities, such as those which might be indicative of the onset of gear damage. The negative log likelihood (NLL) ... Read more
Consistent haul road condition monitoring by means of vehicle response normalisation with Gaussian processes

Author: Heyns, T ; De Villiers, JP ; Heyns, PS Date: Dec 2012 Suboptimal haul road management policies such as routine, periodic and urgent maintenance may result in unnecessary cost, both to roads and vehicles. A recent idea is to continually access haul road condition based on measured vehicle response. ... Read more
A method for real-time condition monitoring of haul roads based on Bayesian parameter estimation

Author: Heyns, T ; Heyns, PS ; De Villiers, JP Date: Apr 2012 Current haul road management techniques, such as routine, periodic and urgent maintenance have shortcomings in many complex haul road environments. Real-time road condition monitoring may significantly reduce maintenance costs, both to the ... Read more
Statistical gear health analysis which is robust to fluctuating loads and operating speeds

Author: Heyns, T ; Godsill, SJ ; De Villiers, JP ; Heyns, PS Date: Feb 2012 Condition-based maintenance is concerned with the collection and interpretation of data to support maintenance decisions. The non- intrusive nature of vibration data enables the monitoring of enclosed systems such as gearboxes. It remains a ... Read more

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Browsing by Author "Heyns, T"

Browsing by Author "Heyns, T"

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