Abstract:In order to improve the applicability and the conveniences of the brake dynamometer for the highspeed train,the measurement and control software for the brake pad performance testing was developed with VC++2010 on Microsoft Windows platforms,in which the device control,the data acquisition and the test report output were realized.According to the equation considering the analog voltage and the rotate speed,the principles of triggering braking were defined to improve the precision of the repetitive initial braking speed.The disadvantages of realtime information displaying lagging behind and data collection with low continuity were overcome by high speed data acquisition module.C++ template class vector,characterized by autoincrement and convenient data management,was used in the data acquisition and report exportation modules to group any test data file and export combined curves.Longterm debugging and running proves that the software developed works well in automatic braking test after operation on the parameters setting panel.