Application of Touch Sensing Technique Based on Magneto-Rheological Fluid in Constant Power Control of Coal Mining Machine

摘要

In this paper, the power control method of coal mining machine of touch sensing technique based on magneto-rheological fluid is presented by analyzing to the performance of haulage and velocity modulation and the constant power control to coal mining machine in the real work. Controller outputs control signals which control touch sensing force-feedback devise base on magneto-rheological fluid by sampling current and rotate speed signals of cutting motor of coal mining machine. The manipulator adjusts haulage speed of coal mining machine to force the motors to operate approximately with rated power according as resistance touched by handle. The results of simulation and experiment indicate that the method can enhance obviously cutting efficiency of coal mining machine and void overload operating. The structure of the control method is simple and actualizes easily, so its outlook in application is good.