| 摘要 |
PROBLEM TO BE SOLVED: To also restrain pitching motion generated at the time of passing, for example, a transient road surface irregularity by an active type suspension control device to set fluid pressure controlled variable it a fluid pressure cylinder by applying a low pass filter on longitudinal acceleration to restrain pitching motion only at the time of acceleration and deceleration. SOLUTION: A first pitching molten controlled variable SCp11 to restrain pitching motion of a vehicle is set by linearly increasing and decreasing its absolute value against low frequency band longitudinal acceleration XG applying a low pass filter on longitudinal acceleration XG, second pitching motion controlled variable SCp21 of large control gain is set only at the time when an absolute value|XG|of longitudinal acceleration on which the low pass filter is not applied, and pitching motion controlled variable SCpi equivalent to fluid pressure P to a hydraulic cylinder or linear is computed and set from a proportional sum of both of them.
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