| The vigorous development of global automobile industry has accelerated the pace of economic prosperity,but also caused a series of problems such as excessive consumption of fossil fuels and environmental pollution.In this context,countries and major oems are fully promoting the research and development of new energy vehicles.Compared with commercial vehicles on the ground,underground trackless auxiliary transport vehicles have higher requirements on air quality and emission safety due to the particularity of the operating environment.However,the problem of "four high and four low" of traditional explosion-proof diesel trackless rubber wheel truck is particularly prominent,which brings serious troubles to the life and health of underground workers and coal mine production.Coal machine production enterprises closely follow the development direction of the electric vehicle era,and upgrade and transform the underground transportation equipment to electrification and modernization.In order to improve the safety and economy of the existing explosion-proof electric rubber wheel car,this paper carries out research from the following aspects:(1)The composition and type of power system of explosion-proof electric rubber wheel car are described in detail.Through the study of industry standards and vehicle parameters of mine explosion-proof electric rubber wheel car,the power performance and economic objectives of the vehicle are set and the matching selection of explosion-proof motor,explosion-proof battery and transmission system is completed.(2)Study the composition of braking energy recovery system of explosion-proof electric rubber wheel vehicle,and analyze the influence of motor and battery characteristics on braking energy recovery.Based on the braking safety and energy recovery efficiency of electric rubber wheel vehicle,combined with the basic theory of braking force distribution,three typical control strategies and ECE regulations,a braking force distribution strategy for front and rear wheels was proposed based on I curve and ECE braking regulations curve.The modeling is completed in Simulink platform.(3)The explosion-proof electric rubber wheel vehicle model was built in AVL-CRUISE and the brake control strategy model was imported,and the analysis and research were carried out in the form of MATLAB and CRUISE co-simulation.Combined with the actual situation,the performance of the explosion-proof electric rubber wheel vehicle is simulated by selecting the typical CCBC working condition,and the results fully prove the rationality and effectiveness of the control strategy.(4)Using C# and MATLAB hybrid programming technology to realize the development of trackless rubber wheel car power system analysis software.The framework design,parameter input interface and some algorithm model of the program are described in detail.Through the analysis and calculation of an example of explosion-proof electric rubber wheel car,it is proved that C# and MATLAB hybrid programming technology can ensure the identity of data transmission and accuracy of simulation results in the process of software simulation analysis. |
