基于MATLAB的液力机械自动变速器性能仿真

Simulation of Hydrodynamic Mechanical Transmission Performance Base on MATLAB

根据两参数换档规律把液力机械自动变速器建成传动控制和传动两个相关模型．传动控制模型包括换档逻辑模块和换档门限值模块,其中换档逻辑模块是运用有限状态机理论建立;根据数学模型,建立传动模型中的液力变矩器模块和传动比模块．设置模型参数和仿真参数,运行仿真,从仿真结果图可以验证液力机械自动变速器模型的准确性．

A transmission control model and a transmission HMT model are formed in the light of the shifting law of two parameters. The transmission control model includes a shift_ logic block and a threshold calculation module. The shift_ logic block is built by using the finite state machine （FSM）. The HMT model consists of a torque converter module and a transmission ratio module . The veracity of the HMT model is checked from the simulation result chart by given model parameters.