Control strategy for a direct driven hydraulics system in the case of a mining loader

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Conference article in proceedings
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Date
2018
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Mcode
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Language
en
Pages
12
294-305
Series
11th International Fluid Power Conference, Aachen, Germany, Volume 1
Abstract
As a response to the strict government emissions regulations, hybridisation of non-road mobile machinery is required. In this paper, behaviour and efficiency of a hybrid mining loader is studied. The full prototype with implemented DDH (Direct Driven Hydraulics) units had been built; however, its performance was unsatisfactory – a large undershoot and steady-state error of 34 % persisted. Therefore, a new control strategy was suggested to overcome the issues. Performance of the system was enhanced by applying a fuzzy PID controller. As a result, reference tracking was significantly improved compared to the conventional PID control case and steady-state error of 1 % was achieved, while the overall efficiency was kept high in the range of above 50%.
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Keywords
fuzzy control, direct driven hydraulics, mining loader, efficiency
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Citation
Martinovski , T , Sourander , T , Turunen , A , Minav , T & Pietola , M 2018 , Control strategy for a direct driven hydraulics system in the case of a mining loader . in H Murrenhoff (ed.) , 11th International Fluid Power Conference, Aachen, Germany . vol. 1 , RWTH Aachen University , Aachen, Germany , pp. 294-305 , International Fluid Power Conference , Aachen , Germany , 19/03/2018 . https://doi.org/10.18154/RWTH-2018-224472