Tow bar arrangement for control of a self-propelled trailer
US12065042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Aug 13, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2240/423
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Tow bar arrangement (100) for interconnection of a pulling vehicle (10) and a pulled trailer (20). The arrangement (100) comprises a control device (110) with a force sensor (111) arranged to sense an instantaneous relative force between vehicle (10) and trailer (20). The control device (110) is arranged to produce a control signal for an electric motor (21) arranged to propel the trailer (20) so that a motor force counter-acts said measured force. The invention is characterised in that the control device (110) is arranged to a first time series of force measurements, in that the control device (110) comprises a low-pass filter (112) producing a second low-pass filtered time series, and in that a regulator (113) is arranged to regulate said second time series to produce said control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.