并联式IVT动力学性能研究

Research on the Dynamics Performance of Parallel IVT

建立并联式IVT的键合图模型和状态方程,给定IVT结构参数,对IVT在变速比和过零点工况下的动态性能进行研究。结果表明:变速比时,IVT输出转速随着速比增加,由负到正变化,可以进行过零调速。在过零点,变负载时,IVT输出速度和转矩不变,但瞬态时有很大的超调量。

In this paper,the bond graph model and state equation of the parallel IVT were established.The IVT structure parameters were given and the dynamic performance of the IVT under different gear and neutral gear was studied.It is shown that the IVT output speed changes from negative to positive as the CVT ratio increases and neutral gear can be performed.When the IVT is in neutral gear and the load is changed,the output speed and torque of the IVT is unchanged,but there is a large overshoot in the transient state.