【摘要】 随着电子信息技术的飞速发展，汽车的智能化逐步变为现实。对于汽车的智能化安全行驶，转向系统的主动操作起着至关重要的作用，为此进行主动转向装置的研究。文中首先进行了汽车主动转向方案设计；然后针对给定车型参数，进行了主动转向装置的结构设计，并进行了转向力矩计算，以此为依据进行了电机选型；最后基于UG软件进行了三维建模和虚拟仿真，分析了转向过程中横向齿条的速度、加速度随时间变化规律，为汽车智能转向操作的研究提供依据。更多还原

【Abstract】 The intelligent vehicle has gradually become reality recently along with the rapid development of electronic information technology. The active operation of the steering system plays a vital role in the safe driving of an intelligent vehicle,so research on active steering device is conducted in the paper. Firstly,design of the active steering scheme for vehicle is proposed;Then the structural design of the active steering device is carried out for the given vehiche parameters,and the steering torque is calculated to select the motor. Finally,the 3D modeling and virtual simulation of the active steering device are carried out based on the UG software. The lateral rack speed and acceleration change with time during the steering process are analyzed,thus it can provide the basis for study on the intelligent steering operation of the vehicles.更多还原