Fast mode release in a force generating apparatus using estimated actuator apply chamber pressure
US6655756B2 · kind B2 · utility
4Cited by
3References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The problem of maintaining fluid modulus during a fast mode release of fluid pressure in a force generating apparatus having a force generating actuator fluidically coupled to a force generating device by a fluid circuit having restrictions and resistance to fluid flow is solved by sensing a pressure remotely from an actuator apply chamber, determining an estimated chamber pressure form the sensed pressure, and limiting the rate at which the actuator can reduce fluid pressure in an apply chamber of the actuator to a rate low enough to preclude a change in modulus of the fluid during the fast mode release.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.