Analysis Of Mortor-in-Wheel Driven Independent Suspension With Virtual Kingpin

As the environment,resources and the load congestion become more and more serious,we pay more attention to buses and other public transport.At present,the speed of designing a new car keep accelerating.Simulation technology is increasingly used in the vehicle develop process.Compared to the traditional ways of developing a vehicle,it consume small,and it spend less time.This article is based on a company's newly developed bus.The bus is 12 meters,and it have the features of low floor,three axis direct drive.This article describe the kinematics,dynamics simulation and optimization of the bus.This article introduces the research and development of the bus handling stability in the world.This article introduces the advantages of air spring suspension compared to the traditional steel plate suspension,and the development of double wishbone independent suspension,and the development of low floor buses.Based on the theory of multi-body dynamics,ADAMS Car is used to build the model of suspension,steering,rigid body and other subsystems.An experiment of parallel wheel travel to optimize the range of caster angle,kingpin inclination angle,camber angle,toe angle,and wheel travel track.Insight is used to optimize the Ackerman steering characteristics.This article build simulation of the single lane change experiment,the fish hook experiment and the step steer experiment according related test criteria.The hub motor increases the mass of the unsprung.This article analyze the impact of the increase unsprung mass to bus handling stability and the force on each component.This article build the finite element method to anslyze the force of key components in the virtual Kingpin axis suspension by ABAQUS.Build the boundary conditions referred to joint force obtained in the dynamics simulation,and this artical analysed the forces on each component by finite element method.