Land vehicles – Wheeled – Running gear
Patent
1989-12-26
1991-06-18
Rice, Kenneth R.
Land vehicles
Wheeled
Running gear
B60G 1704
Patent
active
050244604
ABSTRACT:
In a suspension control comprising a damper having a valve switchable at frequencies within a desired activation frequency range between high and low damping modes, an unfiltered damper signal is repeatedly derived from vehicle suspension related variables at a range significantly greater than the desired activation frequency range. An output filter derives a filtered damper signal from each successive binary actuator force signal by (1) resetting a timer each time the unfiltered damper signal changes value, (2) causing the filtered damper signal to be the same value as the unfiltered damper signal while the timer is inactive, and (3) maintaining the filtered damper signal value unchanged while the timer is active. The damper is controlled in response to the filtered damper signal, whereby unnecessary high frequency switching of the valve is reduced but the damper responds without unnecessary delay to signals within the desired activation frequency range.
REFERENCES:
patent: 4717173 (1988-01-01), Sugasawa et al.
patent: 4730843 (1988-03-01), Tanaka et al.
patent: 4763222 (1988-08-01), Heaston et al.
patent: 4789935 (1988-12-01), Buma et al.
Hanson Reed D.
Radcliffe Scott T.
General Motors Corporation
Rice Kenneth R.
Sigler Robert M.
LandOfFree
Output filter and method for on/off semi-active suspension contr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Output filter and method for on/off semi-active suspension contr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Output filter and method for on/off semi-active suspension contr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-142019