Trailer stability system and method

Details Trailer stability system and method Trailer stability system and method

1994-01-21

1995-01-10

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 20, 303111, 280428, 36442602, B60T 720

Patent

active

053800729

ABSTRACT:
A trailer stability brake control method is disclosed for an articulated vehicle 11 which involves determining values indicative of tractor turning radius of curvature (TRC), articulation angle (AA) and time derivatives thereof, a value for wheel speed variance (WSV) is determined, and then a stability indicator (SI) is determined for each of TRC and AA, and the time derivatives thereof. The later step is performed by signal processing means (63) including filter means having a cutoff frequency (.OMEGA..sub.c) with the cutoff frequency decreasing as the wheel speed variance increases, and vice versa. The trailer brake control means (125) is de-actuated whenever the stability indicator (SI) relating to the articulation angle (AA) becomes less than the wheel speed variance.

REFERENCES:
patent: 4620717 (1986-11-01), Ivory et al.
patent: 4768840 (1988-09-01), Sullivan et al.
patent: 4919494 (1990-04-01), Higashimata et al.
patent: 5001639 (1991-03-01), Breen
patent: 5022714 (1991-06-01), Breen
patent: 5029948 (1991-07-01), Breen et al.
patent: 5033798 (1991-07-01), Breen

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