Efficiency of belt conveyor as function of belt speed regulation algorithm

Coal flows in mines feature randomness. For this reason, it is reasonable to enhance efficiency of belt conveyors through coordination of belt speed and size of coal feed to be transported. The speed regulation quality of different control algorithms is evaluated. For the purpose of discontinuous control, the conveyor load factor is estimated. Different numbers of speed selection levels are analyzed, and the linear load per unit length of conveyor, q(t), as well as its deviation from the rated value qrate are determined for each scenario. For the continuous speed regulation, the RMS error of deviation of the current maximal belt speed proportional to the load size is evaluated. These calculations are performed for two cases of spectral density of random load: the normal distribution and the truncated normal distribution. The energy efficiency of the belt speed regulation systems is discussed. The highest energy efficiency is reached when the load flow is a discontinuous process of periods of coal feed and no coal feed, with random durations of these periods. Reduction in the energy consumption of mineral conveying can reach 12, 13 and 15% in case of three-level, four-level and continuous speed regulation, respectively. Energy saving grows when the no coal flow periods are long as the belt moves with lower speed in these periods. These solutions can be applied to the synthesis of a control system for a main conveyor speed.

Keywords: discontinuous speed regulation, optimized speed selection levels, continuous speed regulation, RMS error of regulation, energy efficiency of regulation, energy saving.
For citation:

Dmitrieva V. V., Sizin P. E. Efficiency of belt conveyor as function of belt speed regulation algorithm. MIAB. Mining Inf. Anal. Bull. 2020;(11):128-139. [In Russ]. DOI: 10.25018/02361493-2020-11-0-128-139.

Issue number: 11
Year: 2020
Page number: 128-139
ISBN: 0236-1493
UDK: 622.647.21
DOI: 10.25018/0236-1493-2020-11-0-128-139
Article receipt date: 24.02.2020
Date of review receipt: 28.04.2020
Date of the editorial board′s decision on the article′s publishing: 10.10.2020
About authors:

V.V. Dmitrieva, Cand. Sci. (Eng.), Assistant Professor, Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia, e-mail: dm-valeriya@yandex.ru,
P.E. Sizin, Cand. Sci. (Phys. Mathem.), Assistant Professor, Institute of Basic Education, National University of Science and Technology «MISiS», 119049, Moscow, Russia, e-mail: mstranger@list.ru.


For contacts:

P.E. Sizin, e-mail: mstranger@list.ru.


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