汽车转弯制动过程中的制动力动态分配控制

提出了一种对制动力进行动态分配控制的新方法·在车辆的转弯制动过程中,采用转向角前馈控制原则,对左、右车轮的制动力进行动态分配控制,使之在各种路况下均能满足制动稳定性的要求·并且通过建立的两自由度三轮车辆模型,进行了计算机模拟·模拟结果显示采用转向角前馈控制的制动力动态分配的方法,大大降低了在制动起作用时间内实际横摆率与理想横摆率之间的差值,从而验证了该方法对提高车辆转弯制动过程中的操纵性和稳定性是有效的·

Dynamic Distribution Control of Braking Force on Turning a Vehicle

To distribute the braking force to both the left and right wheels of a vehicle is one of the most important factors for braking stability when the vehicle is braking on turning. A new method to control dynamically the braking force distribution on turning a vehicle is proposed on the principle of forward-feed control of steering angle, with the intention of meeting the demand of braking stability on turning a vehicle under any road condition. A 3-wheel vehicle model of 2 degrees of freedom is thus established for a simulation of braking force distribution, of which the results show that this method greatly reduces the difference between the actual and ideal lateral wobble frequencies in the process from the very beginning of braking operation to its end. The steerability and effectiveness of the method are therefore verified.