Proportional valve for hydraulic systems
US4386626A · kind A · utility
25Cited by
5References
11Claims
0Family size
Inventor
Key dates
| Filing date | Apr 16, 1980 |
| Grant date | Jun 7, 1983 |
| Priority date | — |
| Expiry date | Apr 16, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7929
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In order to correct non-linearities inherently existing in the relation between the value of a hydraulic fluid parameter controlled by a proportional valve and an operating signal controlling the valve, in an arrangement in which the setting of the valve is controlled by effecting a comparison between the operating signal and a feedback signal representing the valve movement, a memory is provided to modify one of those signals prior to comparison in a manner to compensate for such non-linearities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.