线控转向系统前轮转角控制策略研究

摘要

针对汽车线控转向车辆，以四轮转向车辆模型为基础，将四轮转向车辆的横摆角速度和质心侧偏角作为参照控制目标，研究了线控转向车辆转向传动比在车速以及转向盘转角发生变化时，随车辆转向特性变化而进行优化设置的问题。仿真结果表明，基于参考模型横摆角速度反馈控制方案设置的变传动比控制整体性能最好。%Aiming at automotive steer-by-wire vehicle, based on four-wheel steering vehicle model, the authors studied optimal settings of transmission ratio of steer-by-wire vehicle in the speed and steering wheel Angle changes with the vehicle steering characteristics change by taking four-wheel steering vehicle yawing angular velocity and the mass center of side-slip angle as control target reference. The simulation results showed that performance of yawing angular velocity feedback control scheme based on the reference model of set the variable transmission ratio control of overall was the best.