ACTIVE VIBRATION CONTROLLER FOR VEHICLE

Title:

ACTIVE VIBRATION CONTROLLER FOR VEHICLE

Document Type and Number:

Japanese Patent JP3829408

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To abate vibration at the body side by offsetting the vibration to be transmitted to a car body from a power unit through an active engine mount, to some extent by means of active bearing power.
SOLUTION: Whether a car velocity V is less than the specified value V0 or not is judged (Step 302), and when YES is the case, it is shifted to (Step 307), but when NO is the case, the current residual vibration signal (e) is read in (Step 303), and the residual vibration signal (e) is processed by a band pass- filter where the center frequency is set to the unsprung resonant frequency, and then a frequency constituent P is operated (Step 304). A value for three-time portions of the present and past of the frequency constituent P is found as an integrated value σp (Step 305), and whether this integrated value σp exceeds the threshold value α or not is judged (Step 306), and when YES is the case, it is so judged that a level of vibration to be transmitted to a car body from that other than an engine is in a state of being large enough, whereby such a value as subtracted with a unit deduction ΔW from the current regulated value Wmax is set to a new regulated value Wmax (Step 308). A driving signal is adjusted so as not to exceed this new regulated value Wmax.

Inventors:

Takeshi Kimura
Shigeki Sato

Application Number:

JP13127697A

Publication Date:

October 04, 2006

Filing Date:

May 21, 1997

Export Citation:

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