Control method and means for vibration attenuating damper

Details Control method and means for vibration attenuating damper Control method and means for vibration attenuating damper

1986-09-29

1989-04-18

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Relative speed of thrust member or fluid flow

188285, F16F 918

Patent

active

048218499

ABSTRACT:
A damper of the semi-active type is controlled such that the damping forces generated by the damper, in response to relative movement between spaced members interconnected by it, are caused to be of minimal (ideally zero) magnitude when the product of the relative displacement between the members and the relative velocity between the members is greater than zero. The foregoing control policy may be implemented by purely mechanical elements, or by electronic elements of relatively simple and inexpensive types.

REFERENCES:
patent: 2934175 (1960-04-01), Schnitzer
patent: 3255850 (1966-06-01), Gray
patent: 3807678 (1974-04-01), Karnopp et al.
patent: 4491207 (1985-01-01), Boonchanta et al.
patent: 4696489 (1987-09-01), Fujishiro et al.
patent: 4742998 (1988-05-01), Schubert
Crosby et al., Vibration Control Using Semi-Active Force Generators, Transaction of the ASME Paper No. 73-DET-122.
Margolis et al., Heave Mode Dynamics of a Tracked Air Cushion Vehicle With Semiactive Airbag Secondary Suspension, Journal of Dynamic Systems Measurement and Control, Dec. 1975, pp. 399-407.
Margolis, Semi-Active Control of Wheel Hop in Ground Vehicles, Vehicle System Dynamics, 1983, pp. 317-330.
Krasnicki, The Experimental Performance of an "On-Off", Active Damper, Lord Corporation Technical Article, Circa 1981.
Hrovat et al., An Experimental Comparison Between Semiactive and Passive Suspensions for Air-Cushion Vehicles, Int. J. of Vehicle Design, 1981.
Lord Corporation Semi-Active Suspensions, Lord Corporation Technical Article

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