Land vehicles – Suspension modification enacted during travel – Suspension stiffness for ride comfort
Patent
1997-12-08
1999-07-20
Butler, Douglas C.
Land vehicles
Suspension modification enacted during travel
Suspension stiffness for ride comfort
1882662, 1882661, 701 37, B60G 1700
Patent
active
059247037
ABSTRACT:
The present invention provides a suspension control apparatus including dither amplitude setting device which is adapted to set the amplitude of the dithering current to be superimposed on the command current is set to a small value in a region in which a damping force generated by the shock absorber changes at a high rate relative to changes in intensity of the current applied to the solenoid. The present invention also provides a suspension control apparatus including dither frequency setting device which is adapted to set the frequency of the dithering current to a high frequency in a region in which a damping force generated by the shock absorber changes at a high rate relative to changes in intensity of the current applied to the solenoid and set the frequency of the dithering current to a low frequency in a region other than the above-mentioned region. The suspension control apparatus of the present invention prevents generation of undesirable noise and vibration while suppressing an increase in hysteresis with respect to a damping force.
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Butler Douglas C.
Tokico Ltd.
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