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为研究滚筒调速的可行性及调速对传动系统动态性能的影响,采用MATLAB/Simulink搭建了采煤机截割-牵引耦合机电传动系统动力学模型.针对截割部过载工况,综合考虑采煤机可靠运行和高效生产,制定了4种调速降载方案,并提出了通过截割电机电流计算目标切削厚度、依据目标切削厚度选择调速方案的方法.最后通过仿真对比了各种调速方案下电机和传动系统的动态响应特性,结果表明:当截割电机过载倍数较小时,采用滚筒调速方案能够在降低系统负载的同时使采煤生产率不受影响;当过载倍数较大时,采用牵引调速方案可获得较高的系统可靠性,而采用牵引-滚筒顺序调速方案可获得较高的采煤生产率.
In order to study the feasibility of drum speed regulation and the influence of speed regulation on dynamic performance of transmission system, the dynamic model of shearer cutting-traction coupling electromechanical drive system was established by using MATLAB / Simulink.According to the overload condition of cutting section, Shearer 4 reliable speed and efficient production, developed four kinds of speed-load program and put forward by cutting the motor current calculation of the target thickness, cutting speed according to the target selection speed control method.Finally, by simulation comparison of various The results show that when the cutting motor’s overload multiple is small, adopting the drum speed regulation scheme can reduce the system load while making the coal mining productivity unaffected; when the overload multiple is large , The high reliability of the system can be obtained by adopting the traction speed regulation scheme while the coal mining productivity can be obtained by the traction-roller sequential speed regulation scheme.