Abstract
This article proposes the intelligent mechatronic system that is based on the controlled induction motor drives. This system is effective to increase the technical operation life of mining machines for open pit mining. It allows control of the dynamic state of the mining machine mechanical components, thus the dynamic loads in the transmission are reduced and the accumulated intensity of fatigue wear becomes smaller. In the beginning, the article describes the concept of such system. The central parts demonstrate the control algorithms of the spring forces in the transmission and observe the estimation of immeasurable mechanical values needed for the mechatronic system operation. In the end of the article, the authors confirm the effectiveness of the proposed solutions experimentally using the data from the acting electric rope shovels.
Highlights
In the open pit mining technology, the mining machines take a central place, and among them the mining excavators are widely distributed. [1]
The central parts demonstrate the control algorithms of the spring forces in the transmission and observe the estimation of immeasurable mechanical values needed for the mechatronic system operation
Any electric excavator is a robotic system with electric drives that perform the operation of movement, rotation and digging [5]
Summary
In the open pit mining technology, the mining machines take a central place, and among them the mining excavators are widely distributed. [1]. The service life of the mining machines for open pit mining can be increased without any changes in the design of mechanisms by using intelligent tools [15] Such tools may be the introduction of additional measurements or using the controlled induction motor drives, which, for example, control the spring forces in the transmission. The authors believe the latter is most effective, because it is a comprehensive tool In this case, electric drive can provide a given performance of the excavator by maintaining the mechanical load on the transmission elements in the permitted range, and at the same time it can diminish the accumulation intensity of fatigue damage by control of the dynamic loads, so controlled electric drives can really reduce the likelihood of breakdowns. In the largest open-pit coalmines in Kuzbass the wear exceeds 90 % of service life and exceeds 65 % on operating time
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