Active suspension system for a work vehicle having adjustable pe

Details Active suspension system for a work vehicle having adjustable pe Active suspension system for a work vehicle having adjustable pe

1997-11-12

1999-12-14

Mai, Lanna

Land vehicles

Suspension modification enacted during travel

Suspension stiffness for ride comfort

180 8912, B62D 3306

Patent

active

060007036

ABSTRACT:
An active suspension system for a work vehicle includes an active vibration isolator mounted between the chassis and the cab which controls movement of the cab relative to the chassis in response to a control signal depending on a detected condition (e.g., bumpiness) of a surface ahead of the vehicle. The method of controlling the system includes detecting the bumpiness of the surface on which the vehicle travels, adjusting a performance parameter in response to the detected bumpiness, generating the control signal in response to the detected bumpiness, and applying the control signal to the isolator. Apparatus for such an active suspension system is also disclosed. Bumpiness can be estimated or monitored using vehicle speed, past performance, geo-referenced maps and forward-looking sensors. The adjustable performance parameters include gain and frequency response. The system allows an operator to manually adjust the gain and, thus, the frequency response.

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Active Cab Suspension; by Bjorn Lofgren; Skog Forsk, Results, No. 4, 1995.

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