特种车辆一般轴距较大,作业时转向受空间限制,并且常常在低速作业,轮胎磨损严重。文中从理论分析和试验两个方面论证了后轴转向技术对提升特种车辆的机动性能和轮胎寿命的重大意义。针对特种车辆的通用化底盘提出一种后轴转向系统设计方案,并设计了基于控制质心侧偏角为0°的转向角比例控制算法,从而为进一步设计研究奠定了基础。 Special vehicles generally have a large wheelbase, turning to space-constrained jobs and often operating at low speeds, with heavy tire wear. The paper demonstrates the great significance of the rear axle steering technology to enhance the maneuverability and tire life of special vehicles from the theoretical analysis and experimental aspects. Aiming at the common chassis of special vehicles, a design scheme of rear axle steering system is proposed and a steering angle proportional control algorithm based on 0 ° steering angle is designed, which lays the foundation for further design and research.