Wheel suspension - control appliance with a computer for the relative speed between the sprung mass and not sprung structure of a vehicle.

摘要

PROBLEM TO BE SOLVED: To realize control in consideration of damping force having a non- linear characteristic with a small number of sensors on a suspension device to change the characteristic by controlling the damping force. ;SOLUTION: An acceleration computing means is provided on a sprung structural body. A damping force estimation means 16 of a relative speed estimation means 12 estimates a sampling force by reading information memorized in a damping force characteristic memory means 14 in accordance with a command value of valve opening and relative speed between the sprung and unstrung structural bodies estimated in a previous control cycle. An estimation operation means 18 estimates the relative speed between the sprung and unsprung structural bodies in accordance with the aforementioned acceleration and the estimated damping force. A suspension device is controlled in accordance with this relative speed.;COPYRIGHT: (C)1997,JPO