In order to better adapt to coal and rock characteristics change, exert the ability of shearer cutting motor effectively and solve the problem of power fluctuation in the shearer cutting motor runtime, a constant power control system of shearer cutting motor based on expert system (ES) is established with the theory and method of expert system. In the system, the haulage speed is adjusted in real-time, to make the cutting motor of shearer run in constant power. The model of control system is constructed by the SIMULINK of MATLAB. The simulation results show that haulage speed can be anticipated in the system, adjustment time is decreased by 0.62s and the power of cutting motor overshoot is decreased by 3.8% than conventional system. The system has sensitive response, small fluctuations and Steady working.%为了很好地适应煤岩特性的变化、有效发挥采煤机截割电动机的能力,解决采煤机截割电动机运行时功率波动较大的问题,利用专家系统的理论和方法,建立了基于专家系统的采煤机截割电动机恒功率控制系统,该系统通过对牵引速度实时调节,使采煤机的截割电动机恒功率运行.利用MATLAB/simulink构建了该系统的仿真模型,仿真试验表明,该系统对牵引速度具有超前预见性,比一般控制系统的调节时间缩短0.62s,截割电动机的功率超调减小3.8％,反应灵敏、波动小、工作平稳.
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