为了在有限的发动机舱内合理地布置动力总成,需要确定动力总成的动态包络空间.运用坐标变换和特殊的型值点提取方法,完成各种姿态下动力总成数模的转换和包络面数模简化.借助CATIA二次开发工具CAA,开发出能够在仿真环境下自动生成动力总成动态包络面的分析模块,从而达到简化包络面数据、减少运算时间、提高工作效率的目的.%In order to layout powertrain in a space-limited engine cabin reasonably, it is required to determine powertrain dynamic envelope. Both conversion of powertrain mathematic model and simplification of envelope-analog under all circumstances could be realized by using coordinate transformation and special points extraction. The research aided by CAA, the secondary development tool of CATIA, is trying to produce an analyzing module which can stimulate powertrain dynamic envelope to simplify its data, reduce calculating time and improve efficiency.
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