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<p>To improve the adaptive variable speed anti-interference capability of the cutting system in shearer under complex working conditions, the speed sliding mode control (SMC) method of the cutting system in shearer under strong impact and large fluctuating load conditions was studied. Firstly, combined with the working conditions of coal mine, the cutting load model under complex coal seam conditions is established, and the load simulation equivalent method is proposed. Then, the mathematical equation of permanent magnet synchronous motor (PMSM) in <i>dq</i> axis coordinates based on vector control is established, and the sliding mode variable structure controller suitable for strong load and large fluctuation is designed. Finally, a new sliding mode observer (SMO) is built, and a speed SMC strategy based on the new SMO is constructed for the PMSM in shearer cutting section under complex cutting conditions. Based on MATLAB, the control effect under different load conditions is simulated and verified. The results show that the improved speed SMC strategy based on SMO has better anti-jamming ability and speed tracking ability.</p>

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Research on sliding mode speed control method of permanent magnet drive system in shearer cutting section based on sliding mode observer under complex working conditions

  • 期刊论文

  • 发表日期：

    2025年6月3日

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  • Xiao Chen,
  • Jiaxu Zhao,
  • Yanbin Lu,
  • Lianchao Sheng

摘要

To improve the adaptive variable speed anti-interference capability of the cutting system in shearer under complex working conditions, the speed sliding mode control (SMC) method of the cutting system in shearer under strong impact and large fluctuating load conditions was studied. Firstly, combined with the working conditions of coal mine, the cutting load model under complex coal seam conditions is established, and the load simulation equivalent method is proposed. Then, the mathematical equation of permanent magnet synchronous motor (PMSM) in dq axis coordinates based on vector control is established, and the sliding mode variable structure controller suitable for strong load and large fluctuation is designed. Finally, a new sliding mode observer (SMO) is built, and a speed SMC strategy based on the new SMO is constructed for the PMSM in shearer cutting section under complex cutting conditions. Based on MATLAB, the control effect under different load conditions is simulated and verified. The results show that the improved speed SMC strategy based on SMO has better anti-jamming ability and speed tracking ability.