Usually four-wheel steering systems are based on classic cybernetics, so they can not really control the vehicle perfectly.
但是传统的四轮转向控制系统大多建立在经典控制理论的基础上，对实际车辆很难得到满意的控制效果。
A desirable vehicle model with the best performance of side slip Angle and yaw rate is established through connecting direct yaw moment control (DYC) with four wheel steering (4ws) system.
将横摆力矩控制(dyc)与四轮转向(4ws)系统相结合，建立侧偏角和横摆角速度具有最佳输出响应的车辆理想模型。
The company has targeted 2021 as the year it will release a vehicle without a steering wheel or pedals, working with four startups to accomplish the feat.
该公司计划在2021年推出一款没有方向盘和脚踏板的汽车，目前正与四家初创公司就此展开合作。
And the results show that four-wheel steering vehicle can improve the dynamic responses to the same steering input. And it has far better handling stability than two-wheel steering vehicle.
结果表明，较之二轮转向汽车，四轮转向汽车能大幅度的提高汽车对方向盘输入的动态响应特性，具有更好的机动性能和稳定性能。
In the perspective of Four-Wheel-Steering control, 2-dof and 3-dof vehicle dynamic model considering crosswind is established respectively, and vehicle steering response characteristic is analyzed.
从四轮转向汽车的控制角度出发，分别建立了考虑侧风作用的二自由度和三自由度汽车动力学模型，并对其转向响应特性进行了分析。
The Lagranges equation is used and a nonlinear 3 freedom degrees dynamics model for four-wheel-steering vehicle is built.
利用拉格朗日方程，建立了四轮转向车辆的非线性三自由度动力学模型。
The Lagranges equation is used and a nonlinear 3 freedom degrees dynamics model for four-wheel-steering vehicle is built.
利用拉格朗日方程，建立了四轮转向车辆的非线性三自由度动力学模型。
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