Automatic Compensation Control Method of Torque under Heavy Load Working Condition of Coal Mining Machine
Coal mining machine is an important equipment for coal mining,which has the feature of strong coal breaking capacity.In the process of coal breaking,due to the complexity and variability of coal rock distribution,the drum is subjected to the impact of random multi-load,which is prone to cause the wear of the drum,especially the heavy load impact caused by hard particles.In order to analyse the regulation and control of the"cutting and hauling"system under the heavy load condition of the coal mining machine,the two methods of direct torque control and automatic torque compensation control are compared and analysed,and the coupling model of the"cutting and hauling"system is established.The coupling model of"cutter-tractor"system is established,and the torque control effect under heavy load and sudden change working condition is simulated and analysed,so as to improve the regulating and controlling effect of the coal mining machine and ensure the stability and reliability of the coal mining machine under heavy load working condition.
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