Hydraulic logic cross-coupling between physically-separate redundant servoactuators
US6446432B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B18/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A redundant control actuation system (100) provides hydraulic logic cross-coupling between physically-separate servoactuators (101A, 101B). Each servoactuator has a control valve (102A, 102B) arranged to provide a hydraulic output in response to a control signal. Each actuator also has a hydraulic actuator (106A, 106B) arranged to move a load in response to the hydraulic output from its associated control valve. Logic valve means (103A, 104A, 105A, 103B, 104B, 105B) are operatively associated with the control valves (102A, 102B) and actuators (106A, 106B). Each logic valve means is supplied with hydraulic and electrical input signals. Each logic valve means is operatively arranged between the associated control valve and actuator to either (a) permit control operation of the actuator in response to the control signal, (b) permit the actuator to move freely and independently of the control signal, or (c) restrain movement of the load independently of the control signal, as a function of the supplied input signals. Each logic valve means is operatively arranged to provide a hydraulic output signal. The hydraulic output signal of each servoactuator is provided as the hydraulic input s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.