Authors: Arto Laukka; Juhamatti Saari; Jari Ruuska; Esko Juuso; Sulo Lahdelma
Addresses: Control Engineering, University of Oulu, P.O.Box 4300, FI-90014, Finland ' Mechatronics and Machine Diagnostics, University of Oulu, P.O. Box 4200, FI-90014, Finland ' Control Engineering, University of Oulu, P.O.Box 4300, FI-90014, Finland ' Control Engineering, University of Oulu, P.O.Box 4300, FI-90014, Finland ' Engineering Office Mitsol Oy, Tirriäisentie 11, FI-90540 Oulu, Finland
Abstract: Condition-based maintenance (CBM) can significantly reduce maintenance costs by identifying upcoming needs but requires data fusion and more real-time measurements. Typical measurement variables are vibration, temperature, different speeds and pressures. The project aims to develop a solution framework for combining condition monitoring (CM) and process data to integrate CBM with control and timing of the maintenance actions. The use of on-line and periodic CM measurements requires advanced signal processing and feature extraction. This paper focuses on implementing the measurement system in a case study conducted in Pyhäsalmi mine with Sandvik load haul dump (LHD) machinery. The measurement monitoring system was installed on LHD front axle, which is among the most critical parts in LHD machines. A feasible solution was found in the harsh underground conditions. The working stages can be identified from the signals and the measurements are suitable for the development of the condition and stress indices.
Keywords: data analysis; condition monitoring; condition-based maintenance; CBM; underground mining; load haul dump; LHD machinery; vibration analysis; signal processing; underground mobile machines; feature extraction; measurement monitoring.
International Journal of Industrial and Systems Engineering, 2016 Vol.23 No.1, pp.74 - 89
Available online: 06 Apr 2016 *Full-text access for editors Access for subscribers Purchase this article Comment on this article