主销设置——瞬时轴线法
ADAMS/CAR提供了两种建立主销的方法，几何法和瞬时轴线法。对于麦弗逊、双横臂等可以明确找出主销的悬架，可以通过几何法方便的设置。但是对于多连杆悬架，则需要通过瞬时轴线法进行设置。以下是摘自帮助文件的瞬时轴线法的一些说明。
Instant axis - Requires one part and one hardpoint. When using this method, it is very important that you select the correct part and hardpoint information. You can use any part and hardpoint, provided that locking the vertical motion of the part at that hardpoint location actually locks the spring travel.
Instant axis - Adams/Car calculates the steer axis as the instant axis of rotation of the wheel carrier parts. To calculate the steer axis, in physical terms, Adams/Car first locks the spring travel and applies incremental steering torque or force. Then, from the resulting translation and rotation of the wheel carrier part, it is able to calculate the instant axis of rotation for each wheel. The instant axis of rotation corresponds to the steer axis. 利用瞬时轴线法设置时，参考物体和参考点怎么设置才是正确的呢？有什么技巧或者原则？ 哥们，这个怎么弄啊，英文的看不太懂 同问啊，有经验可以交流吗
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