Search Results - "Auret, Lidia"

Interpretation of nonlinear relationships between process variables by use of random forests by Auret, Lidia, Aldrich, Chris

“…Variable importance measures derived from a random forest model of the throughput of a calcium carbide furnace depending on nine process variables. The dummy…”
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Empirical comparison of tree ensemble variable importance measures by Auret, Lidia, Aldrich, Chris

“…Tree ensembles are becoming well-established as popular and powerful data modelling techniques. Tree ensemble models are essentially black box models, although…”
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A Hierarchical Approach to Improve the Interpretability of Causality Maps for Plant-Wide Fault Identification by Natali van Zijl, Steven Martin Bradshaw, Lidia Auret, Tobias Muller Louw

“…Modern mineral processing plants utilise fault detection and diagnosis to minimise time spent under faulty conditions. However, a fault originating in one…”
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One-Dimensional Convolutional Auto-Encoder for Predicting Furnace Blowback Events from Multivariate Time Series Process Data—A Case Study by Carl Daniel Theunissen, Steven Martin Bradshaw, Lidia Auret, Tobias Muller Louw

“…Modern industrial mining and mineral processing applications are characterized by large volumes of historical process data. Hazardous events occurring in these…”
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A Systematic Workflow for Oscillation Diagnosis Using Transfer Entropy by Lindner, Brian, Auret, Lidia, Bauer, Margret

“…Causality analysis techniques, such as transfer entropy, have been proven to be useful tools for oscillation diagnosis in a variety of industrial processing…”
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Experimental modelling and plant simulation of spiral concentrators: Comparing response surface methodology and extended Holland-Batt models by Nienaber, Ernst C., Auret, Lidia

“…[Display omitted] •Experimental modelling of a chromite separating spiral concentrator is performed.•A second data set of hematite separation results is…”
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Using Apparent Activation Energy as a Reactivity Criterion for Biomass Pyrolysis by Carrier, Marion, Auret, Lidia, Bridgwater, Anthony, Knoetze, Johannes H

“…The reactivity of chemically isolated lignocellulosic blocks, namely, α-cellulose, holocellulose, and lignin, has been rationalized on the basis of the…”
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Comparative analysis of Granger causality and transfer entropy to present a decision flow for the application of oscillation diagnosis by Lindner, Brian, Auret, Lidia, Bauer, Margret, Groenewald, J.W.D.

“…•The causality analysis performance of transfer entropy and Granger causality is compared on simulation and industrial case studies.•Performance comparison…”
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Unsupervised Process Fault Detection with Random Forests by Auret, Lidia, Aldrich, Chris

“…Process monitoring technology plays a vital role in the automation of mineral processing plants, where there is an increased emphasis on safe, cost-effective,…”
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Combined optimal sensor network design and self-optimizing control with application in a typical sugarcane mill by Mkwananzi, Thobeka, Louw, Tobi M., Auret, Lidia, Mandegari, Mohsen, Görgens, Johann F.

“…The concept of self-optimizing control is applied in the context of sensor network design to support the simultaneous selection of optimal sensors and…”
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Change point detection in time series data with random forests by Auret, Lidia, Aldrich, Chris

“…A large class of monitoring problems can be cast as the detection of a change in the parameters of a static or dynamic system, based on the effects of these…”
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Set-point optimization for plant-wide control of a sugarcane mill under process and market prices disturbances: Energy and economic perspectives by Mkwananzi, Thobeka, Mandegari, Mohsen, Louw, Tobias M., Auret, Lidia, Görgens, Johann F.

“…Optimization and control strategies are necessary to keep factory operations profitable while minimizing energy usage. Like many industries, the need for the…”
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The effect of operating conditions on neutral sulphite semi-chemical pulping properties: an industrial pilot plant study by Lambert, Matthew A., Wahl, Helene, Bosman, Catharine E., Louw, Tobias M., Auret, Lidia, Görgens, Johann F.

“…The influence of pulping variables on the pulp and black liquor properties for a neutral sulphite semi-chemical pulping system was investigated in a pilot…”
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Industrial PID Control Loop Data Repository and Comparison of Fault Detection Methods by Bauer, Margret, Auret, Lidia, Bacci di Capaci, Riccardo, Horch, Alexander, Thornhill, Nina F

“…This paper presents the control loop data of industrial controllers that are recently made available online. All data are verified and some of it has been…”
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Fault diagnosis and economic performance evaluation for a simulated base metal leaching operation by Strydom, Johannes Jacobus, Miskin, Jason John, McCoy, John Themba, Auret, Lidia, Dorfling, Christie

“…[Display omitted] •Validated, closed-loop dynamic high pressure leaching model simulates real faults.•Multivariate fault detection and identification is used…”
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A residential rainwater harvesting system as a control engineering challenge problem by Auret, Lidia, Bauer, Margret

“…The operation of a rainwater harvesting is described for the purpose of a control engineering challenge for student training and competitions. The core of the…”
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A control system framework for reflective practice: Design-based research applied to process control teaching by Auret, Lidia, Wollf, Karin E

“…Reflective practice in teaching is an important requirement for continuous improvement in professional education. In this work, we report on an approach to…”
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