Data-Driven Fault Detection and Isolation of Industrial Fluid Transfer Systems
| Type of publication: | Mastersthesis |
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| Type: | Masters Thesisy |
| Year: | 2018 |
| Month: | February |
| School: | TU Darmstadt |
| Abstract: | One of the key promises of Industry 4.0 is to reshape the various industrial sectors through the integration of advanced analytics and IoT into its day to day operations. A major component of Industry 4.0 is predictive maintenance, which allows real-time remote condition monitoring of critical industrial equipment, leading to reduced downtimes and optimal asset management. However, the application of analytical methods into existing industrial ecosystems is largely a non-standard problem and varies from case to case. In this thesis we provide an end-toend solution for fault detection and isolation (FDI) in an industrial fluid transfer system, with the primary objective of finding leaks in the reservoirs using advanced signal processing and machine learning techniques. Optimization remains a driving force throughout the implementation, keeping in mind the environmental constraints and the limited hardware and sensing capabilities of the devices involved. We extract the relevant features from the available data-set and use it to train the predictive models. The algorithms consist of a single strong learner and ensemble of weak learners to provide comparative analysis for determining the best possible option. We employ Bayesian statistics to further improve the predictive outcomes. For the next part, we identify the optimal parameters for our use case through various experiments involving the different phases of our implementation life cycle. Finally, we design a prototype of our solution in the industrial setup to demonstrate the feasibility of the design concept. Our results show a prediction accuracy of over 99% for the reservoirs, while at the same time being fast, lightweight and unobtrusive to the existing test-bed. On top of that, our overall implementation and optimization techniques provide flexibility in terms of architectural and hardware changes, making it robust and future-proof. |
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