Trailer stability system and method
US5380072A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1994 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Jan 21, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2230/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.