Wire guidance method and apparatus
US4307329A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1979 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Nov 6, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0272
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A ground vehicle guidance system for following a current-carrying guidewire provides improved steering stability over a wide range of speeds and improved immunity to inductive field anomalies by computing vehicle heading and lateral displacement using sensor signals themselves substantially insensitive to heading variations, with the sensor signals being processed to provide steering command signals having specified relationships to vehicle steering geometry, so that desired damping factors can be obtained for both forward and reverse travel. Improved vehicle speed-limiting and stopping circuits control truck operation in accordance with computed heading and lateral displacement deviations independently from each other. Steering systems are illustrated both for vehicles using steerable wheels and vehicles steered by differential drive wheel speed control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.