Redundant electrohydraulic positioning control system
US11572901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2021 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Mar 25, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8757
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The subject matter of this specification can be embodied in, among other things, an electrohydraulic positioning control system that includes a shuttle valve configured to direct fluid flow between a selectable one of a first fluid port and a second fluid port, and a fluid outlet configured to be fluidically connected to a fluid actuator, a first servo valve controllable to selectably permit and block flow between the first fluid port, a fluid source, and a fluid drain, a second servo valve controllable to selectably permit and block flow between the second fluid port, the fluid source, and the fluid drain, a first servo controller configured to provide a first health signal and control the first servo valve based on a second health signal, and a second servo controller configured to provide the second health signal and control the second servo valve based on the first health signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.