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THE HANDLING AND STABILITY PERFORMANCE ANALYSIS OF FOUR-WHEEL-STEERING VEHICLE

机译：四轮转向车辆的处理与稳定性性能分析

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摘要

Safety in driving a vehicle with high speed is extremely crucial. Due to the large yaw rate and sideslip angle of a vehicle body moving in high speed, the turning of vehicle cannot be well controlled by only steering the front wheels. However the four wheel steering vehicle (4WS) has the following merits: When the vehicle takes a turn at low speed, the radius will be small, and the car can turn actively, and when the vehicle takes a turn at high speed, the radius will become big, it can change the traffic lane rapidly, and the body does not have a big swinging. Therefore, the four wheel steering vehicle can improve vehicle's handling stability performance effectively at high speed, and agility performance at low speed. This paper takes the four wheel steering (4WS) as the study-object. Firstly, two freedom degrees vehicle mathematical model was established, based on the front wheel steering angle proportion to the rear wheel steering angle, the handling and stability performance was analyzed. Then using the ADAMS software, the vehicle virtual prototype model of 4WS and 2WS was established, according to different speed, the handling and stability performance was analyzed. Based on the simulation result, it is evident that the handling and stability performance of 4WS is better than 2WS.
机译：驾驶高速驾驶车辆的安全是极其至关重要的。由于车身高速移动的大的横摆率和侧滑角度，通过仅通过转向前轮，车辆的转动不能很好地控制。然而，四轮转向车辆（4WS）具有以下优点：当车辆以低速转动时，半径将小，并且汽车可以主动转动，并且当车辆处于高速时，半径将变大，它可以快速改变交通车道，身体没有大摆动。因此，四轮转向车辆可以在高速的高速下有效地改善车辆的处理稳定性，并且处于低速的敏捷性能。本文将四轮转向（4WS）作为研究对象采用。首先，二自由度车辆的数学模型的成立，基于前轮转向角成比例地后轮转向角，所述操纵稳定性性能进行了分析。然后使用ADAMS软件，根据不同的速度建立了4WS和2WS的车辆虚拟原型模型，分析了处理和稳定性。基于仿真结果，显然，4WS的处理和稳定性性能优于2WS。

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