System and method for controlling velocity and detecting obstructions of a vehicle lift gate
US7423400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/546
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system and method for controlling a rotational closure system, such as a lift gate, of a vehicle may include sensing an angle of the rotational closure system, generating a drive signal, driving a drive mechanism with the drive signal to output a mechanical force for moving the rotational closure system, generating an angle signal having a digital pulsewidth modulation form with a duty cycle based on the angle of the rotational closure system, feeding back the angle signal, and, in response to the feedback angle signal, altering the drive signal while the drive mechanism is moving the rotational closure system between open and closed positions. In one embodiment, the angle signal is generated from a location disposed on the rotational closure system. A controller mounted to the rotational closure system may include an angle sensor and be configured to receive and process the angle signal to drive the drive mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.