DAMPING FORCE CONTROL APPARATUS OF SUSPENSION

摘要

A damping force control apparatus controlling a damping force control value for a damper whose damping force is set by the damping force control value includes: a relative velocity estimation device estimating a relative velocity of a vehicle wheel with respect to a vehicle body; and a damping force calculation device determining the damping force control value to control vibration of the vehicle body based on control input variables of the vehicle body and an estimated relative velocity, wherein the relative velocity estimation device includes an estimated damping force calculation section, a delay correction section, and a relative velocity calculation section, and the delay correction section corrects the estimated damping force and varies delay correction terms to reduce divergence between an actual measured relative velocity and the estimated relative velocity in different damping coefficients of the damper.

主权项

1. A damping force control apparatus of a suspension that controls a damping force control value for a damper in which a damping force is set by the damping force control value, the damping force control apparatus comprising:
a relative velocity estimation device that estimates a relative velocity of a vehicle wheel with respect to a vehicle body; and a damping force calculation device that determines the damping force control value so as to control vibration of the vehicle body based on control input variables of the vehicle body and an estimated relative velocity that is estimated by the relative velocity estimation device, wherein the relative velocity estimation device includes an estimated damping force calculation section that estimates the damping force of the damper based on the estimated relative velocity and the damping force control value, a delay correction section that obtains an estimated damping force after delay correction by correcting the estimated damping force that is estimated by the estimated damping force calculation section, and a relative velocity calculation section that calculates the estimated relative velocity based on the estimated damping force after the delay correction and input variables of the relative velocity estimation device, and wherein the delay correction section corrects the estimated damping force based on the damping force control value during calculation and varies delay correction terms so as to reduce divergence between an actual measured relative velocity and the estimated relative velocity in a plurality of different damping coefficients of the damper.