Vehicle suspension control having electronic bumpstop with trimset compensation

摘要

A suspension control for vehicle dampers uses a trimset value to compensate signals from relative body/wheel position sensors associated with the dampers. Each trimset value is determined by recording a sensor value with the body and wheel in a predetermined relative state, such as by lifting the vehicle until the associated wheel is free of the ground and hanging in a low limit position determined by the suspension apparatus. In vehicle operation, the trimset value is used as an offset to the relative position sensor signal to accurately determine damper position relative to its compression and rebound limit positions. When the damper is within a predetermined bump stop region near either of the compression and rebound limit positions, a bump stop value is determined and applied to the damper to provide a high minimum damping level creating an electronic bump stop for the damper.