초록 ▼

A suspension apparatus for vehicles capable of changing a characteristic of suspension by controlling supply/release of fluid into/from hydraulic cylinders which are respectively provided between a vehicle body and each wheel. The apparatus detects vehicle height signals at a plurality of positions

A suspension apparatus for vehicles capable of changing a characteristic of suspension by controlling supply/release of fluid into/from hydraulic cylinders which are respectively provided between a vehicle body and each wheel. The apparatus detects vehicle height signals at a plurality of positions and extracts at least a bouncing component signal and a rolling component signal from vehicle-height signals detected by the plurality of vehicle-height sensors. Each of the bouncing component signal and rolling component signals are filtered and are used to control supply/release of fluid into/from hydraulic cylinders based on the filtered signals. A cut-off frequency for the rolling component signal set in said filtering unit is set higher than that for the bouncing component signal.

대표청구항 ▼

A suspension apparatus for a vehicle capable of changing a characteristic of suspension by controlling a resistance force generated by hydraulic cylinders which are respectively provided between a vehicle body and each wheel of the vehicle, comprising: a plurality of vehicle-height sensors detecting

A suspension apparatus for a vehicle capable of changing a characteristic of suspension by controlling a resistance force generated by hydraulic cylinders which are respectively provided between a vehicle body and each wheel of the vehicle, comprising: a plurality of vehicle-height sensors detecting vehicle height signals at a plurality of positions; extraction means for extracting a bouncing component signal and a rolling component signal from the vehicle-height signals detected by the plurality of vehicle-height sensors; low pass filtering means for passing a low frequency component each of the bouncing component signal and the rolling component signal; and control means for controlling a resistance force of each hydraulic cylinder against a relative displacement of the vehicle body with respect to the wheel based on output signals from said low-pass filtering means, wherein a cut-off frequency for the low frequency component of the rolling component signal set in the low-pass filtering means is set higher than a cut-off frequency for the low frequency component the bouncing component signal.