ABC-主动车身控制系统技术解析active body control system.doc

ABC-主动车身控制系统技术解析active body control systemActive Body Control, namely the active body control system. As we all know, when the suspension system is relatively hard, canGain control of very good, especially when high speed travel, is conducive to the bodys stability, but when faced with poor road, theComfort is not guaranteed, while the suspension set is relatively soft, although good comfort, but handling andDecline, such as speed up the rise, such as brake nod phenomenon is more obvious. The ABC overcomes the suspension set comfortThe contradiction between the performance and handling, maximum close to the consumers of vehicles in these two requirements.The working mode of traditional suspension system is mainly through the thick body beat, pushing hydraulic oil through the damper suppressionThe vibration body, and is composed of a spiral spring will beat energy absorption, this completely passive mode has many shortcomings. WhileThe ABC system through the wheels and body motion sensing the slightest, before any large body vibration of suspension system in a timely mannerThe adjustment, to keep the body balance.The ABC system enables auto control of roll, pitch, yaw, beating and the height of the body can be more rapid and accurate. The carBody roll is small, changes in camber angle wheel is small, the tire can better maintain the vertical with the ground contact, the tires on the groundEnhance the adhesion of the driving and braking, to give full play to the role of tire. In addition load car anyway change, auto startFinally can maintain a certain body height, so the geometric relationship between the suspension also can ensure the constant. The ABC system can well adapt toVarious road conditions, even in the rugged place, also can maintain superior handling, comfort and steering stability.Most early proposed the active body control concept is LEXUS, in fact it is only is only the ordinary suspension spiral with bombSpring is replaced by the air spring, an increase of a set of automatic control unit is simple, compared with the complex road conditions, still has its BureauLimited. When the French developed hanging a stronger adaptability, is now the Peugeot 607, Citroen C5 on the use ofHydraulic active suspension, damping force can he adjusted in 5 stages of the shock absorber (i.e., soft hardness), relative LEXUS is a bigProgress. But the real first solve the adaptive problem or a Mercedes Benz ABC, he is adjusting the air pressure air pump to adjust the suspensionHang the damping force, therefore, he can adjust the suspension soft hardness variable level, so as to adapt to various road factors.Active Body Control，即主动车身控制系统。我们都知道，当悬挂系统较硬时，可以获得很好的操控性，尤其在高速行驶时，有利于车身的稳定，但是当遇到较差的路面时，其舒适性就无法得到保证，而悬挂系统设定的较软时，虽然得到了较好的舒适性，但操控性又有所下降，比如加速抬头、刹车点头等现象就比较明显。而ABC的出现克服了悬挂设定舒适性和操控性之间的矛盾，最大限度地接近消费者对车辆在这两方面的要求。传统的悬架系统工作方式主要是通过厚重的车身跳动，推压液压油，通过阻尼减振器抑制车身的振动，并由螺旋弹簧将跳动能量吸收，这种完全被动的方式有许多不足之处。而ABC系统则通过感应最轻微的车轮及车身动作，在任何大的车身振动之前及时对悬架系统作出调整，保持车身的平衡。ABC系统使汽车对侧倾、俯仰、横摆、跳动和车身高度的控制都能更加迅速、精确。车身的侧倾小，车轮外倾角度变化也小，轮胎就能较好地保持与地面垂直接触，使轮胎对地面的附着力提高，以充分发挥轮胎的驱动制动作用。此外汽车的载重量无论如何变化，汽车始终能保持一定的车身高度，所以悬架的几何关系也可以确保不变。ABC系统能够很好地适应各种路面情况，即使在崎岖不平的地方，也能保持优越的操控性、舒适性及方向稳定性。最早提出主动车身控制理念的是LEXUS，事实上它只是仅仅是把普通悬挂用的螺旋弹簧换成了空气弹簧，增加了一套简单的自动控制单元，相对于