Powertrain mount system optimization design for hybrid vehicle

The powertrain mount system of hybrid vehicle (HV) was a typical energy coupling system, which has follow features: multi-constraints, multi-objective and high nonlinear, it is difficult to solve the coupling optimization problem of the mount system by using the traditional optimization method. The outside point penalty function method was adopted to construct a reasonable objective function, which transformed multi-constraints, multi-objective problem into unconstraint single objective problem. A combination optimization algorithm was adopted to solve the 6-order rigid-body modal energy decoupling problem of the mount system. The optimization results show that the combination optimization method can effectively solve the problem of the mount energy coupling.