在现代车辆设计过程中 ,广泛采用的分析工具是采用试验方法对设计估算进行补充。有效利用时 ,则可导致开发时间的缩短和改善车辆的性能。一部自动变速箱 ( AT)装置的开发过程可以得益于能精确得到AT换档动作的分析表达式。在典型的 AT装置中 ,摩擦组件如湿式离合器和带制动是为自动换档用来改变行星齿轮传动的配置。因此 ,一个精确的摩擦组件动力学表达式是予示 AT换档动作的关键。在不同的工况下 ,摩擦组件的接合特性相差很大。显然在 1 970认为其基本接合物理学是相同的 ,它相对现代的作为予测计算用的高效模型是有益的。本文阐述首先试图在传动系仿真中利用一个动态摩擦组件模型 ,特别补充用一个动态带制动模型予示一个 4档 AT装置在不同工况下的换升档动作。仿真结果和由一动态测量试验台测的试验数据很好一致。该动态带制动模型提高了传动系模型的换档予测性能 ,并且可进行换档质量和控制策略的分析估算 In the modern vehicle design process, a widely used analytical tool is to supplement design estimates with test methods. When used effectively, this can lead to shorter development times and improved vehicle performance. The development of an automatic transmission (AT) unit benefits from an analytical expression that gives an accurate indication of AT shift behavior. In typical AT devices, friction components such as wet clutches and belt brakes are configurations that are used to change planetary gear transmissions for automatic shifting. Therefore, a precise friction component kinetic expression is the key to show AT shift action. Under different conditions, the friction characteristics of the joints vary widely. Apparently in 1970, the basic bonding physics is considered to be the same, and it is more useful as a modern, highly efficient model for predicting calculations. This paper first attempts to use a dynamic friction module model in powertrain simulation. In particular, a dynamic band brake model is used to show the upshift behavior of a 4-speed AT device under different operating conditions. The simulation results are in good agreement with the experimental data measured by a dynamic measurement test stand. The dynamic belt braking model improves the transmission performance of the driveline model and enables the analysis and estimation of gear shift quality and control strategy