Abstract: The computer aided design platform in electromagnetic brake is founded. The fame structure and work mode of the platform are introduced. Every function module of the platform is given detailed account. The method to determine the maximum and minimum moment based on parameter of vehicle is discussed. The methods and process in designing brake structure parameter using braking efficiency as optimum goal are introduced. From the robust design standpoint, the method to optimize brake structure parameter is also introduced. The algorithms to design the key part of electromagnetic brake are presented. Also the functions of the simulation analysis module and virtual assembly module are discussed. The platform mak-ing use of database to save design information and the two-way correlation between model base and database are founded. At last, the technology of the integration of software is also dis-cussed.

Key words: Electromagnetic brake, Platform, Secondary development