Study On The Experimental Platform System Of The Mine Vehicle Power Transmission

China Mine Auxiliary Transportation Industry has achieved great progress in the past few years, numbers of Ishita Sukesuke transportation equipment that equipped with electric motor and diesel engine have been developed, which include both rail and off-rail transport methods. However, these engines may be quite dangerous under the circumstances of motor temperature is too high or the diesel engine emissions exceed the standard, there will be much chance of explosion. Therefore, it is necessary to set up a power transmission test rig for coal mine auxiliary transportation equipment, which can simulate the working condition of the mine to test the performance of the electric motor and diesel engine, so that performance of the power sources are guaranteed. In this paper, we mainly study the power transmission system of the mining vehicle, and establish the simulation model for experiment.The structure and technology of the test bench for the coal mine vehicle power transmission are described. Firstly, the control technology of the diesel engine, the motor and the dynamometer are introduced, which can provide the theoretical basis for the development of control strategy and modeling simulation. Secondly, the inertia of the vehicle is introduced and the necessity of inertia simulation is discussed, whereafter,mathematical model is given. In the course of the operation of the mining vehicle, the analysis of the resistance is carried out, and the corresponding mathematical model is established. Finally, the measurement and control technology of the experimental platform is introduced, including CAN bus communication technology and LabVIEW testtechnology.Overall design of the experimental platform for the power transmission of mining vehicle. Hardware design which includes a diesel engine whose power is 50~300kW and a power of the 90~315kW AC motor can meet the transportation demand, and then the corresponding diesel engine controller(ECU) and frequency converter are selected according to the control technology which explained earlier. We focus on the endless rope winch and explosion-proof diesel trackless rubber tyred vehicle condition in the mine,which is calculated by the mathematical model corresponding to different conditions of resistance torque and inertia dynamometer, select the corresponding development, design the corresponding control strategy and the inertia flywheel group. On the basis of different operating conditions, such as the required speed torque and other characteristics of the corresponding sensor, coupling, data collector, etc. Software design contains the main introduction of the software structure of the module and operation process, the CAN bus to receive and transmit signal type and LabVIEW and CAN bus communication technology and visual interface.Test platform modeling. In the MATLAB/Simulink software environment, the model of diesel engine, electric motor and dynamometer are established, what’s more, the experimental simulation platform of complete mining vehicle power transmission is formed according to different control strategies.Simulation tests of the performance of the motor and the diesel engine are carried out respectively. According to the analysis of the actual operating conditions of the two kinds of mining vehicles, different control strategies are set up. The simulation results are in good agreement with the theoretical results.The efficiency of the transmission experiment platform is verified through simulation analysis.