Abstract: In order to solve the problems such as difficult detection of output power, large detection error and large overshoot of rubber wheel truck of auxiliary transportation in coal mine, Study the detection method and control technology of output power of rubber wheel, Based on the analysis of the mathematical model of the output power of the rubber-wheel car chassis, The method of accurately detecting the output power by the principle of electromagnetic induction, The PID control technology and fuzzy control technology are integrated to build a fuzzy PID controller to realize the accurate control of the chassis output power, And MATLAB/simulink software was used to build the model for simulation verification, The results show that the output value of fuzzy PID controller is stable and converged, The maximum overshoot was only 9.7%, Overshoot volume is greatly reduced. The advantages and effects of fuzzy PID control on power control have been verified through on-site debugging and application. The research conclusion can provide a theoretical reference for the unmanned development of coal mine auxiliary transportation in the later period.