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Research on drum shearer speed control strategies under sudden-changing load

  • Jianjun Hu
  • Junlin Zha
  • Changzhao Liu
  • Chengjie Sun
Technical Paper
  • 15 Downloads

Abstract

In order to reduce the dynamic load of cutting transmission system and maintain the coal productivity under sudden-changing load conditions, the drum speed control strategy and traction-drum speed combined control strategy were proposed to adapt to different sudden-changing load conditions based on analyzing the influence factors of drum load and productivity. When sudden-changing load is small, the drum speed control strategy is adopted; when sudden-changing load is large, the traction-drum speed combined control strategy is adopted. The model of cutting transmission system has been established and analyzed, and the results show that the proposed strategies can not only reduce the dynamic load effectively, but also maintain the highly coal productivity under sudden-changing load conditions. Aiming at the overshoot of system load in the variable speed process, the speed variation rate of cutting motor of the two control strategies was optimized, respectively, and the load overshoot can be reduced effectively. The conclusions have been verified by building the test bench.

Keywords

Shearer Sudden-changing load Control strategy Optimization 

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Jianjun Hu
    • 1
  • Junlin Zha
    • 1
  • Changzhao Liu
    • 1
  • Chengjie Sun
    • 1
  1. 1.The State Key Laboratory of Mechanical TransmissionsChongqing UniversityChongqingChina

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