Application of constant power control of shearer based on magneto-rheological valve

Through analyzing the performance of haulage and velocity modulation and the constant power control for shearer in the real work,the power control method of shearer of touch sensing technique based on magneto-rheological valve was presented.Controller outputed control signals according to sampling current and rotated speed signals of cutting motor of shearer,and controled touch sensing force-feedback devise which based on magneto-rheological valve.The manipulator adjusts haulage speed of shearer to force the motors to operate approximately with rated power according to handle resistance.The simulation and experiment results show that the method can enhance cutting efficiency of shearer obviously and void overload.This method is simple and realized easily.