Suspension control system for automotive vehicle
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United States of America Patent
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May 28, 1996
Issued Date -
N/A
app pub date -
Aug 1, 1994
filing date -
Oct 3, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A suspension control system for an automotive vehicle is provided in which a movement of a sprung mass velocity is monitored, when the magnitude of the sprung mass velocity is below a predetermined threshold value, a control unit outputs a control signal to a pulse motor to vary the position of an adjuster so that one of extension and compression stroke sides of a position member of a shock absorber, whose direction is the same as that of the sprung mass velocity provides a high damping coefficient, and when the magnitude of the sprung mass velocity is above the predetermined threshold value, a control constant for the damping coefficient is changed toward a high damping sensitivity range until the sprung mass velocity exceeding the predetermined threshold value is reduced below another predetermined threshold value, a magnitude of the other predetermined threshold value being lower than that of the predetermined threshold value.
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