Study Of Simulation And Experiment Of Adhesion Control Methods Based On The Multidisciplinary Virtual Ptototype

With the implementation of the strategy of high speed and over loading in the field of railway in china, locomotive needs to obtain greater traction or braking force. The adhesion in the wheel-rail contact is the most important formation factor of traction or braking force, only which is used effectively, the safe and stable running of locomotive can be ensured, and then locomotive can play more better power. But the adhesion in the wheel-rail contact is complicated and variable, which will have a huge impact on high-efficient utilization of power. A long period of research and practice show that adhesion control system in the locomotive can effectively elevate the utilization rate of adhesion in the wheel-rail contact and reduce power losses. Therefore, in-depth study of locomotive adhesion control system is one of the important subjects in the field of railway rolling stock.At present, theoretical study on adhesion control system is usually based on simplified locomotive mathematical model, which is a far cry from the actual locomotive and wheel-rail system. However, the actual line experiment is high-cost and restricted by various physical conditions. Virtual prototype technology can provide an effective means for research on complicated system such as locomotive adhesion control system. With the help of ADAMS/Rail and MATLAB/Simulink, based on one electric locomotive, this thesis built a virtual prototype model of the electric locomotive, including multi-body dynamics system, wheel-rail system, power traction drive system and control system. Meanwhile, the virtual prototype platform realized the simulation of traction state, regenerative braking state and constant speed state in electric locomotive’s running process. In addition, the platform simulated locomotive’s idling states, due to smaller adhesion coefficient in the wheel-rail contact, through which hybrid adhesion control and fuzzy adhesion control were studied.In order to realize the master and innovation of core technologies, on the basis of introducing, digesting and absorbing foreign advanced technologies in the field of railway rolling stock, eventually products with independent intellectual property rights can be developed. According to the proposed methods, this paper combined with some domestic type of high speed and great power electric locomotive and carried out the experimental study on adhesion control system.