Methods for evaluating dynamic characteristics of vehicle...

Details Methods for evaluating dynamic characteristics of vehicle... Methods for evaluating dynamic characteristics of vehicle...

2007-11-20

2007-11-20

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C701S029000, C073S011070

Reexamination Certificate

active

11100315

ABSTRACT:
The ability of a damper to attenuate smooth road shake in a vehicle is tested using a test fixture that is controlled by inputting data for periodic low amplitude periodic excitations having a selected frequency range, selected amplitude range and a selected dither representative of vehicle operation on relatively smooth roads. The selected frequency range is about 5 Hz to 30 Hz and the selected amplitude range is about 0.05 mm to 2.00 mm. A preferred frequency is about 15 Hz which is applied preferably for about 200 cycles in a series of separate tests at individual amplitudes of, for example, 0.05, 0.10, 0.15, 0.20, 0.25, 0.50, 1.00 and 2.00 mm. The damper is tested to produce low amplitude test results comprising displacement, force and velocity parameters, measured as functions of time.

REFERENCES:
patent: 6360580 (2002-03-01), Muller
patent: 7194398 (2007-03-01), Abe
U.S. Appl. No. 11/100,315, filed Apr. 6, 2005, Quinn et al.

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