The invention relates to a Macpherson suspension steering wheel kingpin caster angle adjusting mechanism and an active control method, and belongs to the technical field of vehicles. The adjusting mechanism comprises a Macpherson suspension and more than one pair of adjusting mechanisms; the adjusting mechanism comprises a support, an adjusting motor, a gear rack mechanism and a guide mechanism, and active control adjustment of the Macpherson suspension kingpin caster angle is achieved. The active control operation comprises the following steps of (1) establishing a wheel aligning torque calculation model, (2) establishing a steering wheel aligning resistance torque calculation model, and (3) establishing a kingpin caster angle active control calculation formula in the vehicle running process. And (3) controlling the rotating direction and the rotating angle of an adjusting motor in the adjusting mechanism according to the calculation result of the step (3), and driving an adjusting bracket to perform horizontal displacement adjustment through a gear and rack mechanism to realize active adjustment of the caster angle alpha of the kingpin. According to the method, the yaw velocity amplitude of the vehicle is reduced by 10%-15%, the time for the vehicle to tend to be stable is shortened by about 50%, and the driving stability is improved.
本发明涉及麦弗逊悬架转向轮主销后倾角的调节机构及主动控制方法,属于车辆技术领域。所述调节机构包括麦弗逊悬架和一对以上的调节机构;调节机构包括支座、调节电机、齿轮齿条机构和导向机构,实现麦弗逊悬架主销后倾角的主动控制调节。主动控制操作步骤如下:(1)建立车轮回正力矩计算模型,(2)建立转向轮回正阻力矩计算模型,(3)建立车辆行驶中的主销后倾角主动控制计算公式;根据步骤(3)的计算结果控制调节机构中的调节电机的转动方向和转角大小,通过齿轮齿条机构带动调节支架进行水平位移调节,实现主销后倾角α的主动调节。本发明使车辆的横摆角速度幅值降低10%~15%,车辆趋于稳定的时间降低50%左右,提高了行驶稳定性。
Macpherson suspension steering wheel kingpin caster angle adjusting mechanism and active control method
麦弗逊悬架转向轮主销后倾角的调节机构及主动控制方法
26.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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