Research On Static Locomotive Whole Weighting Test-Bed

As the operating speed of rolling stock are getting improved, it sets higher requirement to the vehicle dynamic performance and adhesion traction performance. Axis heavy locomotive is an important technical parameters of the locomotive wheel. Whether weight distribution is uniform directly impacts on the entire adhesive locomotive traction play and traction performance of the campaign. the use of traditional testing techniques and testing approaches, not only inefficient, but large error.it cannot be far from enough to meet the demand of product.therefore,there is an important significance to develop advanced intelligent rolling stock weighting device.Based on the project of research and development of a Locomotive& Rolling Stock Co Ltd,the paper mainly achieved further study as follow.Firstly,explained and described the composition structure , principles and functions of the static locomotive whole weighting test-bed.Secondly,calculated the dimension parameters of hydraulic system in accordance with relevant mechanical design manual,finished the preliminary desing. Furthermore,the general design of the weighting platform beam hydraulic servo system was carried through and calculated.then established mathematic model of hydraulic servo system, utilized MATLAB/SIMULINK tools to simulate, and steady-state error was analyzed and calculated.at last, put the results to perform correction analysis.Thirdly, the models of synchronous control of multi-cylinder's synchronizing control servo system are analyzed, determined the "master-slave"mainly with the "equal-state" played a subsidiary role,which combinated the two methods to control the system; according to the system's features,the incremental PID control was adopted to improve dynamic performance of the system, raised precision of signal cylinder's position and multi-cylinder's synchronizing control.