School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
ISA Trans. 2023 Apr;135:188-198. doi: 10.1016/j.isatra.2022.10.001. Epub 2022 Oct 13.
To solve the problem that it is inconvenient to install additional sensors to detect fault signals on the gear of the shearer, the permanent magnet motor control model was first established, and the motor control parameters were determined. Then, the gear mesh stiffness is used as the main judgment basis for gear failure. The gear failure model and the system torsion dynamics model are established. The gear meshing stiffness curve under the crack fault is fitted. Finally, the transmission system overall dynamic model is proposed to obtain the motor current and gear fault information. The influence of different faults on the system electromechanical performance is studied. The mapping relationship between the crack fault and the current is established. The typical characteristics under fault conditions are extracted, which is an important reference for studying the health status of the cutting drive system in the shearer.
为了解决在采煤机齿轮上安装附加传感器以检测故障信号不方便的问题，首先建立了永磁电机控制模型，并确定了电机控制参数。然后，将齿轮啮合刚度用作齿轮故障的主要判断依据。建立了齿轮故障模型和系统扭转动力学模型。拟合了裂纹故障下的齿轮啮合刚度曲线。最后，提出了传动系统整体动力学模型，以获得电机电流和齿轮故障信息。研究了不同故障对系统机电性能的影响。建立了裂纹故障与电流之间的映射关系。提取了故障状态下的典型特征，这是研究采煤机截割传动系统健康状况的重要参考。
